Guide | AMITA

30 Dec.,2024

 

Guide | AMITA

ONLINE GUIDE FOR UNDERSTANDING TWINS

In the early 's the fishing industry was revolutionized by the introduction of synthetic fibers into the net manufacturing process. Nylon was the first to be widely used in the manufacture of fishing nets, but several other fibers have since become quite important.

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For thousands of years, before the introduction of synthetics, fishing nets were made of natural fibers, mainly cotton, linen, flax and sisal. These fibers presented the fishermen with many problems; they rotted easily, absorbed much water during use, and demanded constant attention. Caring for his nets took so much of the fisherman's time that there was relatively little left for the actual business of fishing.

With the introduction of synthetic fibers, all this changed. Nets made of synthetics do not absorb water, do not rot, and are stronger, lighter and easier to handle than those made of natural fibers. The savings to the fisherman in time, energy and money have been tremendous. Efficiency has improved, and catches have increased to the point where fishing is now one of the world's most important industries.

Raw materials popularly used for fishing twines and nets can be classified as follows:

A) Synthetic fibers

Nowadays the great majority of fishing nets are made of synthetic fibers.

1) Continuous filament fibers Multifilament yarns Nylon, Polyester, Polyethylene, etc. Monofilament lines Nylon, etc. 2) Yarns spun from cut fibers Vinylon, Nylon, Polyester, etc.

B) Natural fibers

Natural fibers are now rarely used.

These are all spun cut-fiber yearns Cotton, Manila, Flax, Linen, etc.

TERMS

DENIER

Before examining synthetic raw materials, we must explain the term "denier", which is used to specify continuous filament synthetic fibers.

To indicate the thickness of any continuous filament fiber, we specify according to "denier". The "denier" number (abbreviated "d") of any continuous fiber tells us the relationship between its weight and its length. It has been decided, by international agreement, that the following formula shall indicate the standard of one denier:

One filament 9,000 meters long and weighting 1 gram = 1 denier (1d)

Therefore, a multifilament fiber 9,000 meters long, weighing 3 grams = 3 denier (3d). Likewise a fiber 9,000 meters long and weighing 210 grams = 210 denier (210d). The higher the "d" number the thicker the filaments are. So, a 420d fiber is twice as thick as a 210d fiber.

Before discussing Vinylon, which is a "cut" fiber, we must explain the term "count".

COUNT

All twines and nets are made of either synthetic materials (Nylon, Polyester, Polyethylene, Polypropylene, etc.) or of natural materials (Cotton, Linen, Flax, Manila, etc.). These raw materials fall into two categories:

1. Continuous filament fibers, including all synthetic multifilament and monofilament fibers and 2. Cut fibers, including all natural fibers, as well as Vinylon, cut Nylon, Cut Polyester, etc.

Just as "denier" is used to specify the thickness of a synthetic multifilament yarn, "count" is the term used to specify the thickness of a yarn spun from cut fiber (whether synthetic or natural). The "count" number (abbreviated "c") of any cut fiber tells us the relationship between its weight and its length. It has been decided, by international agreement, that the following formula shall indicate the standard of one count:

A yarn spun from any cut fiber, which weights one pound and is 840 yards long = 1 count (1c)

Therefore, a fiber which weights one pound and 8,200 yards long = 10 count (10c). Likewise a fiber which weighs one pound and is 16,800 yards long = 20 count (20c). It is clear that the higher the "count" number the finer the fibers are. In other words, a 10 count fiber is twice as thick as a 20 count fiber.

The most popular sizes of cut fiber used in fishing nets are:

5 count 10 count 20 count

GRAVITY

Though other considerations such as fiber strength, flexibility and durability are usually most important, the specific gravities of synthetic fibers should also be considered when choosing a fiber for twines or nets.

The specific gravity of any fiber indicates its weight in relation to the weight of water. Water has a specific gravity of 1.00. Any fiber with a specific gravity greater than 1.00 will not float, in water, while a fiber with a specific gravity less than 1.00 will.

Below are the specific gravities of the synthetic fibers most commonly used in twines and fishing nets, plus those of certain relatively important natural fibers.

  • Polypropylene 0.91
  • Polyethylene 0.95
  • WATER 1.00
  • Nylon 1.14
  • Vinylon 1.26
  • Polyester 1.38
  • Manila 1.48
  • Cotton 1.53

MATERIALS

NYLON

There are two types of nylon used for fishing nets:

  • Multifilament (yarns)
  • Monofilament (lines)

Both types are readily available all over the world.

Nylon Multifilament

Nylon Multifilament is composed of very fine filaments. The sizes of nylon multifilament yarns most commonly used in fishing nets and twines are:-

  • 210d
  • 420d
  • 840d
  • d

Of these, 210d is, by far, the most commonly used and important. 210d yarn is usually composed of 24 filaments.

Nylon Monofilament

Nylon Monofilament lines are produced in a way very similar in principle, to that by which Nylon Multifilament yarns are produced. The technique is called extrusion. There is a great difference, in the relative scale of each operation. Where the production of multifilament requires a very large-scale operation and tremendous space and facilities, monofilament can easily be produced by a relatively small- scale operation.

N.B. Nylon Monofilament lines are specified by diameter.

POLYETHYLENE

Polyethylene, like Nylon Monofilament, is produced through a small scale extrusion process. Although it is a monofilament, it is specified according to denier. This is because one Polyethylene line is, by itself, relatively weak. It is therefore never used for fishing in this form. Instead, Polyethylene lines are always twisted or braided.

POLYESTER

Polyester is similar to Nylon Multifilament in appearance. And it is used, almost always, in multifilament form.

VINYLON

Vinylon, a fiber invented in Japan, is currently only manufactured in Japan and The People's Republic of China. It is a cut fiber and is similar to cotton in appearance.

TWINE

In order to manufacture finished netting, the basics raw material must first be transformed into a workable form, that is, "twine".

Twines are formed by twisting yarns or filaments on a "Ring Doubling Machine" (Ring Twister) in two stages:

  1. Primary Twisting of yarns into strands, followed by
  2. Secondary Twisting of strands into twines.

Twines may be twisted in one of two directions "Left" (L) or "Right" (R).
Traditionally, twines used for the manufacture of fishing nets receive a "Left" (L) twist.

Finished lengths of twine are specified as follows:

210d/9 L3 (or 210d/9 Z3) 420d/6 R2 (or 420d/6 S2) this twine would be identical to 210d/12 R . /9 L3 (or /9 Z3) this twine would be identical to 210d/54 L3.

To take an example: 210d/9 L3

210d refers to the thickness of yarns or multifilaments 9 refers to the total number of yarns or twisted multifilaments L (which may also be specified "Z") refers to the direction of twist 3 refers to the number of strands in one twine

In this case, the production process on the Ring Twister would be as follows:

  1. Primary twisting 3 lengths of 210d multifilament yarns are twisted "Right" (R) into strands.
  2. Secondary twisting 3 of these strands are then twisted "Left" (L), into twines.
  3. The finished twines are then wound on a Winding Machine into "cheese", "cone", or "hank" ready for further production or delivery.

NETTING

With the following eight specifications, any piece of netting can be completely described:

1. Twine Material

2. Twine Size

3. Type of Knot

There are two common types of knot used to knit netting;
  1. the single knot
  2. the double knot

SINGLE KNOT

DOUBLE KNOT

The double knot is used primarily in gill netting.
This is because, in gill net fishing, fish are caught and entangled in the mesh. It is essential in this case that the knots do not slip. Therefore, the tighter double knot is used.
The single knot is used in all other types of netting.
Purse and beach seine, trawl and stationary.

4. Mesh Size

There are two ways of specifying mesh size:
  1. by measuring the full length of one stretched mesh, in inches
  2. by measuring the distance from one knot of the mesh to a neighboring knot, in millimeters (half-mesh).

5. Depth

Measured in number of meshes

6. Length

Measured stretched, in meters, yards, or feet.

7. Selvage

Specified as "single" selvage or "double" selvage.

8. Color

Netting may be dyed to any color.

Nylon Thread Guide

Nylon Thread Buying Guide

The Nylon Thread Buying Guide helps customers get the right thread for their needs. Our approach is to decide if nylon is the right thread for the job, identify which sizes (thicknesses) should be used, and finally pick the color and spool size that works. We have nylon thread in eleven sizes, over 100 colors, and putups ranging from small spools priced around $13 to discounted cases.

Information Topics

  • Nylon Thread Glossary - The nylon thread glossary covers common terms used when shopping for nylon thread.
  • Nylon Thread Uses - Where using nylon thread works best.
  • Normal Wear and Tear - Topics cover elongation over time, mildew, aging, UV, abrasion, and heat resistance.
  • Nylon Thread Limitations - Conditions where using another type of thread may be better suited.
  • Overview - Considerations for selecting the right size nylon thread.
  • Size Descriptions - Use the nylon by size description chart to determine machine capability, stitch visibility, and needle to thread size.
  • Nylon Thread Size Specifications - Covers equivalent size standards, strengths, thicknesses, and yards per pound.
  • Thread Size to Material - Recommended thread sizes for fabric and leather.
  • Nominal Spool Weights - Covers maximum and minimum allowances for thread per spool.
  • Spool Dimensions - Covers spool sizes, and options for using larger spools.

 

With nylon thread selection, understanding terminology, uses, limitations, and sizes are some of the most important considerations in order to ensure the best choice possible.

Bonded - Bonded nylon has a protective coating on the thread to resist against fraying, needle friction and heat when it is sewn at higher speeds. Bonding also helps to prevent unraveling. It is important to note that colors of bonded threads appear slightly darker on the spool. Colors will become lighter when sewn.

Other types of bonded thread we carry 

  • Polyester Thread

  • Kevlar Thread

  • Nomex Thread - Limited Stock - Special ordering available.

Soft - A nylon thread that is not bonded. It is suitable for sewing at slower speeds. It is better suited for gluing applications, because bonded coatings repel glues and adhesives.

Left Twist - The standard ply twist direction for almost every single-needle machine on the market. It is widely known as a Z-Twist, or Standard Twist. All of our thread is left twist unless otherwise noted.

Right Twist - This is widely known an S-Twist, and sometimes a Reverse Twist. It is more commonly used in double needle machines for banners. It is easier to find a right-twist polyester thread.

Size - A number designation given to a threads thickness, based on weight. We carry eleven different sizes from the ultra-thin Size 15, to the ultra-thick Size 554. The most popular size is Size 69. There are 4 main size standards: Commercial, Tex, TKT, and Government. Our product listings use commercial sizing. Our Specifications chart shows equivalent sizing.

Putup - Putup refers to the amount of thread on a spool. Commercial sewers generally buy nylon thread by the pound; hobbyists and casual sewers can save with our two and four ounce spools.

Monocord - A single ply of nylon thread that is not sensitive to machine twist direction. It is about 10 to 14% stronger. But, it is thinner than regular nylon for reduced stitch appearance. Monocord usually requires a tensioning adjustment. Once it is made, it runs very smooth. UV rated nylon is more often available in monocord.

Nylon thread is a great choice for sewing fabric, leather, canvas, and vinyl. We sell nylon thread in eleven sizes that range from ultra-thin to cord-like. Our Use by Size Guide shows more details about selecting the best sizes or possibly better suited types of thread to use.

Here are some things you can do with nylon thread: Athletic Gear, Auto Upholstery, Backpacks, Collars, Corn Hole Bags, Drapes, Furniture, Handbags, Holsters, Horse Blankets, Laptop Cases, Leatherwork, Menu Covers, Orthopedics, Pet Bedding, Purses, Saddles, Sandbags, Slip Covers, Sheaths, Straps. Upholstery, Wallets, Webbing, X-Ray Aprons.

Elongation - Nylon thread stretches about 26% over time. This is beneficial for its end use, because it allows for the seams to stretch with the fabric, allowing for 'breaking in'. For active wear and lighter materials, Woolly Nylon thread has a greater stretch. It is categorized separate from the nylon on this page as a serger thread. Kevlar Thread has about a 2% stretch.
 
Mildew, Aging, and Sunlight - Nylon thread has excellent resistance to mildew and aging, but prolonged exposure to sunlight causes some deterioration. Polyester or specially treated UVR Nylon are better for long-term exposure to sunlight. If seams are not exposed, nylon is usually okay.
 
Abrasion - Nylon Thread has excellent abrasion resistance.
 
Heat - Nylon thread will begin to yellow at around 300F. Prolonged exposure to temperatures over 285F will cause deterioration. Nylon thread begins to stick at approximately 445F, and melt at around 485 to 500F.

Chemical Resistance - Bleaches and Solvents - Nylon thread can be bleached in most solutions, but it is generally insoluble in most organic solvents. It is soluble in some phenolic compounds.
 
Chemical Resistance - Hydrocarbons - Nylon thread has excellent resistance to hydrocarbons such as gasoline, Diesel, and kerosene.
 
Chemical Resistance - Acids and Alkalis - Nylon thread is unaffected by most mineral acids, except hot mineral acids. It dissolves with partial decomposition in concentrated solutions of hydrochloric, sulfuric, and nitric acids. Soluble in formic acids. Substantially inert in alkalis.

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Nylon thread is popular because of its versatility, durability, and strength to size. There are applications where other types of thread may be better suited depending on the conditions the end use will be under. The most notable circumstances are:

Outdoor applications with prolonged sunlight exposure - Nylon thread can withstand moderate exposure to sunlight, provided that it is not exposed long term, or there is some sort of ultraviolet (UV) protection (e.g. windshields, or unexposed seams). This is why it is popular for automotive interiors, upholstery, and many other applications. It should not be used for outdoor furniture and sewing sails, awnings, tarpaulins. In these cases Polyester Thread or UVR Nylon thread are better choices. Polyester looks and feels like nylon, and has very close size-for-size strength. Its pricing is comparable to nylon.

Fire retardant garments and gear - Nylon thread yellows at 300F, sticks at 445F and melts at 500F. First responder garments and gear and some high temperature conveyer belts require much more fire resistance. Use Kevlar or Fire Retardant Sewing Thread in these situations. They are heat resistant to 600F or more and do not melt. However, they do not do well with UV. Their pricing is much higher than nylon.

Critical strength requirements - Nylon is strong but Kevlar Thread is about twice as strong. For example, size 92 nylon has a 15 pound tensile strength; the same size Kevlar has a 30 pound tensile strength. Kevlar's downside is that it costs about five times more than nylon and only available in yellow. Consider using heavier weight nylon or double-stitching to meet strength requirements.

Cotton-like look - Our nylon thread has a smooth, glossy, shiny finish that does not go well with garments that need a soft, fuzzy, cotton-like look. In these cases, Cotton, Spun Polyester, and Wooly Nylon are better and less expensive choices.

Clear, or Invisible Stitching - Related Category: Monofilament Thread. Monofilament is also made from nylon. Its construction is similar to fishing line, and is categorized separately.

Chemical Resistance - Nylon does well with some chemicals and not as well with others. Nylon thread can be bleached in most solutions, but it is generally insoluble in most organic solvents. It is soluble in some phenolic compounds.

Thread size is important because there are many considerations. The main ones are:

  • Machine Capability - Home, commercial and heavy duty sewing machines have different thread and needle size limitations.
  • Needle Size - Needles have sizes that are best suited for specific thread sizes and machine types.
  • Stitch Appearance - Are you looking for stitching to be inconspicuous, noticeable, very noticeable, or to be a focal point?
  • Strength - Is the thread a suitable strength for what is being sewn?

When nylon thread's size increases...

  • Commercial and Tex Equivalent numbers increase.
  • Machine capability requirements increase.
  • Thread diameter increases.
  • Thread strength increases.
  • Needle size increases.
  • Needle heat and friction increase.
  • Stitch visibility increases.
  • Fabric ounce per yard increases.
  • Leather ounce per yard increases.
  • Yards per pound decreases.

Use the nylon by size description chart to determine machine capability. Home, commercial and heavy duty sewing machines have different thread and needle size limitations. This chart also describes in general way, the level of stitch visibility, and notes that are relevant to size.
 
Nylon - Size 15
Size 15 (Tex 16) nylon is an ultra lightweight thread used on home and commercial machines with a size 70/10 to 80/12 needle. Its stitch appearance is inconspicuous. All size 15 items are soft, and on clearance. Alternatives may be available in Polyester Thread, Cotton and Spun Polyester.

Nylon - Size 33
Size 33 (Tex 30) nylon is a lightweight thread used on home and commercial machines with a size 80/12 to 90/14 needle. Its stitch appearance is inconspicuous. Size 33 nylon has increased in popularity in recent years, and we now carry it in basic colors.

Nylon - Size 46
Size 46 (Tex 45) nylon is a lightweight thread used on home and commercial machines with a size 90/14 to 100/16 needle. Its stitch appearance is inconspicuous. It is available in about 90 colors.


Nylon - Size 69
Size 69 (Tex 70) is a middleweight thread used on home and commercial machines with a size 100/16 to 110 /18 needle. Its stitch appearance is inconspicuous, becoming more noticeable. It is our most popular size. It is the thickest size most home sewing machines can handle, and it is available in over 160 colors.


Nylon - Size 92
Size 92 (Tex 90) is a middleweight thread used on commercial machines with a size 110/18 to 125/20 needle. Its stitch appearance is noticeable. Most people cannot break a size 92 nylon by hand. It is available in about 80 colors.


Nylon - Size 138
Size 138 (Tex 135) is a middle to heavyweight thread used on commercial and heavy duty machines with a size 125/20 to 140/22 needle. Its stitch appearance is noticeable, beginning to stand out. It is our second most popular size, and it is available in over 120 colors.


Nylon - Size 207
Size 207 (Tex 210) is a heavyweight thread used on commercial and heavy duty machines with a size 140/22 to 180/24 needle. Its stitch appearance stands out. It is available in mostly basic colors.


Nylon - Size 277
Size 277 (Tex 270) is a heavyweight thread used on commercial and heavy duty machines with a size 180/24 to 220/26 needle. Its stitch appearance stands out, becoming more of a focal point. It is available in very basic colors.


Nylon - Size 346
Size 346 (Tex 350) is a heavyweight thread used on heavy duty machines with a size 220/26 to 260/28 needle. Its stitch appearance is a focal point. It is available in black, white, brown, and in some closeout colors.


Nylon - Size 415
Size 415 (Tex 410) is a heavyweight thread used on heavy duty machines with a size 260/28 to 330/30 needle. Its stitch appearance is a focal point. It is available in black, white, and in some closeout colors.

 

Nylon - Size 554
Size 554 (Tex 600) is an ultra heavyweight thread used on heavy duty machines with a size 330/30 to 360/32 needle. Its stitch appearance is a focal point. It is available in black and white, and is about 1 mm thick.

Commercial sizing is most widely used thread size standard. Our nylon thread shopping selections are listed in commercial sizes. Occasionally we have some off sizes. When this happens, we use the closest Tex Equivalent to the commercial size. Government sizes fall under Military Specification A-A- (Formerly VT-295E). We also have more information about yards per spool under related topic: Spool Sizes.

Nylon - Size 15

  • Commercial Size 15, Tex 16 (T-16), Gov't Size 00

  • Average Strength 2.0 Lbs. (0.9 kg)

  • Average Thickness 6/" (0.006 in.), or 0.10 mm

  • Recommended Needle Sizes 70/10 to 80/12

  • Average Yards per ounce (28,000 per Pound)

Nylon - Size 33

  • Commercial Size 33, Tex 30 to 35 (T-30 to T-35), Gov't Size AA, Tkt 80
  • Average Strength 5.0 Lbs. (2.3 kg)
  • Average Thickness 8/" (0.008 in.), or 0.20 mm
  • Recommended Needle Sizes 80/12 to 90/14
  • Average Yards 850 per ounce (13,800 per Pound)

Nylon - Size 46

  • Commercial Size 46, Tex 45 (T-45), Gov't Size B, Tkt 60
  • Average Strength 8.0 Lbs. (3.6 kg)
  • Average Thickness 9/" (0.009 in.), or 0.24 mm
  • Recommended Needle Sizes 90/14 to 100/16
  • Average Yards 625 per ounce (10,000 per Pound)

Nylon - Size 69

  • Commercial Size 69, Tex 70 (T-70), Gov't Size E, Tkt 40
  • Average Strength 11.0 Lbs. (5.0 kg)
  • Average Thickness 12/" (0.012 in.), or 0.29  mm
  • Recommended Needle Sizes 100/16 to 110 /18
  • Average Yards 375 per ounce (6,000 per Pound)

Nylon - Size 92

  • Commercial Size 92, Tex 90 (T-90), Gov't Size F, Tkt 30
  • Average Strength 15.0 Lbs. (6.8 kg)
  • Average Thickness 13/" (0.013 in.), or 0.34  mm
  • Recommended Needle Sizes 110/18 to 125/20
  • Average Yards 263 per ounce (4,200 per Pound)

Nylon - Size 138

  • Commercial Size 138, Tex 135 (T-135), Gov't Size FF, Tkt 20
  • Average Strength 22.0 Lbs. (10.0 kg)
  • Average Thickness 16/" (0.016 in.), or 0.41  mm
  • Recommended Needle Sizes 125/20 to 140/22
  • Average Yards 187 per ounce (3,000 per Pound)

Nylon - Size 207

  • Commercial Size 207, Tex 210 (T-210), Gov't Size 3 Cord, Tkt 15
  • Average Strength 32.0 Lbs. (14.5 kg)
  • Average Thickness 20/" (0.020 in.), or 0.51  mm
  • Recommended Needle Sizes 140/22 to 180/24
  • Average Yards 125 per ounce (2,000 per Pound)

Nylon - Size 277

  • Commercial Size 277, Tex 270 (T-270), Gov't Size 4 Cord, Tkt 10
  • Average Strength 45.0 Lbs. (20.4 kg)
  • Average Thickness 23/" (0.023 in.), or 0.59 mm
  • Recommended Needle Sizes 180/24 to 220/26
  • Average Yards 93 per ounce (1,496 per Pound)

Nylon - Size 346

  • Commercial Size 346, Tex 350 (T-350), Gov't Size 5 Cord
  • Average Strength 53.0 Lbs. (24.0 kg)
  • Average Thickness 26/" (0.026 in.), or 0.66 mm
  • Recommended Needle Sizes 220/26 to 260/28
  • Average Yards 75 per ounce (1,200per Pound)

Nylon - Size 415

  • Commercial Size 415, Tex 410 (T-410), Gov't Size 6 Cord
  • Average Strength 73.0 Lbs. (32.7 kg)
  • Average Thickness 28/" (0.028 in.), or 0.72  mm
  • Recommended Needle Sizes 260/28 to 330/30
  • Average Yards 65 per ounce (1,040 per Pound)

Nylon - Size 554

  • Commercial Size 554, Tex 600 (T-600), Gov't Size 8 Cord
  • Average Strength 83.0 Lbs. (37.7 kg)
  • Average Thickness 40/" (0.040 in.), or 1.02  mm
  • Recommended Needle Sizes 330/30 to 360/32
  • Average Yards 41 per ounce (656 per Pound)

The material that you are sewing costs far more than the thread. In most cases, with the exception of parachutes, it is better for the thread to break than to have the stitches pull through the fabric. This means that the weight of the fabric, in ounces per square yard, is the best way to determine thread size. Here are size recommendations for fabric and leather.

Fabric Ounce to Yard and Thread Size Range

2 to 6 Ounce Fabric: Nylon Thread Sizes 15 to 33
6 to 8 Ounce Fabric: Nylon Thread Sizes 33 to 46
8 to 10 Ounce Fabric: Nylon Thread Sizes 69 to 92
12 to 14 Ounce Fabric: Nylon Thread Sizes 92 to 207
Comments
There other things to consider. You may use a thinner thread because your machine cannot handle a heavier thread, if it does not compromise safety. Or, you may choose a thicker thread because you want stitches to stand out. Selecting specific needle points designed for specific materials is recommended if a universal, round point needle won't suffice.

Leather Ounce to Yard and Thread Size Range

2 to 3 Ounce Leather: Nylon Thread Sizes 33 to 69
3 to 4 Ounce Leather: Nylon Thread Sizes 46 to 92
4 to 5 Ounce Leather: Nylon Thread Sizes 69 to 138
5 to 6 Ounce Leather: Nylon Thread Sizes 92 to 207
7 to 8 Ounce Leather: Nylon Thread Sizes 138 to 277
8 to 9 Ounce Leather: Nylon Thread Sizes 207 to 554
Multiple Layers of Leather: Nylon Thread Sizes 207 to 554
Comments
There other things to consider. You may use a thinner thread because your machine cannot handle a heavier thread, if it does not compromise safety. Or, you may choose a thicker thread because you want stitches to stand out.

We sell most of our nylon thread in 4 and 16 Ounce (1 Pound) spool sizes or putups. The smaller putups cost more per ounce than the larger ones. But, they are a better choice for one-time jobs, casual sewing, people who need a stash of many colors, and experimenters. Nylon thread is sold by weight (ounces, pounds) - not yards. This is because the number of yards-per-pound decreases as thread thickness increases. Selling by weight means prices for a given size spool are about the same across most thread sizes.

Nominal Spool Weights

Industry norms allow nylon thread spool weights to vary by plus/minus 10% from the stated nominal weight. This means that customers get slightly less or slightly more thread than the nominal weight shown on our site. This chart shows our nominal weights and the thread-weight range (including the spool's weight) for various sizes. When spools fall within these ranges, we do not charge for when they go over or refund for when they go under. It is important to note that we usually do not charge when a spool goes over the maximum tolerance, but we will always refund when they go below the tolerance.

Nominal 2 Oz Spool - Minimum Spool Weight: 2.6 Oz., Maximum Spool Weight: 4.5 Oz.
Nominal 4 Oz Spool - Minimum Spool Weight: 4.6 Oz., Maximum Spool Weight: 5.9 Oz.
Nominal 6 Oz Spool - Minimum Spool Weight: 6.0 Oz., Maximum Spool Weight: 7.9 Oz.
Nominal 8 Oz Spool - Minimum Spool Weight: 8.0 Oz., Maximum Spool Weight: 10.5 Oz.
Nominal 12 Oz Spool - Minimum Spool Weight: 10.6 Oz., Maximum Spool Weight: 15.5 Oz.
Nominal 16 Oz Spool - Minimum Spool Weight: 15.6 Oz., Maximum Spool Weight: 19.9 Oz.

All of our nylon thread is wound on king spools unless otherwise noted. Most of our 2 and 4 ounce spools are wound in-house, and the spool sizes are consistent for those. Normally, manufacturer spool dimensions are consistent. There are some times one-off occasions where manufacturers will wind 12 and 16 ounce spools with different heights, but the base dimensions remain constant.

Average Spool Dimensions
2 and 4 Oz Spools - Base: 2.5", Height: 4.5"
6 and 8 Oz Spools - Base: 3.0", Height: 5.25"
12 and 16 Oz Spools By Brand
A&E (Anefil Nylon) - Base: 4.5", Height: 7.5"
Amann USA (Strongbond) - Base: 4.5", Height: 7.5"
Ozen (Bondylon) - Base: 4.5", Height: 6.5"
Eddington - Base: 4.5", Height: 6.5"
Fil-Tec (BNT) - Base: 4.5", Height: 7.5"
Service Thread - Base: 4.5", Height: 6.5"
Inside Diameter
The inside shaft diameter of all spools
described, regardless of base and height,
is 1 inch.
Comments
For sewing machines not geared to handle these size spools, a Thread Cone Holder may be needed. It is designed to help machines bypass these limitations. There are also DIY thread cone holders that are can be made from PVC pipe, wire coat hangers, or coffee cups most notably. The advantage of a thread cone holder is that it is specifically designed for sewing.
We also carry 100 yard and 50 yard Hand Stitching Tubes. They are not particularly designed for machine sewing, but customers have created Do-It-Yourself adaptors.
It is important to note that DIY projects can cause machine damage or create tensioning issues if not made properly.

The Thread Exchange, Inc.

Nylon Thread Sizes

  • Size 33 / Tex 30 / Govt. AA - Lightweight thread used it for sewing garments, thin leather purses and wallets. Use needle sizes 80/12 to 90/14

  • Size 46 / Tex 45 / Govt. B - Lightweight thread used for sewing lightweight tents, thin leather, outdoor garments, and delicate upholsteryUse needle sizes 90/14 to 100/16

  • Size 69 / Tex 70 / Govt. E - Our most popular size, with the widest color selection of all our sizes. It is a middleweight thread and the largest size most home sewing machines can handle. Typical uses include sewing lightweight furniture upholstery, leather, outdoor gear, garments, upholstery, drapes. Use needle sizes 100/16 to 110 /18

  • Size 92 / Tex 90 / Govt. F - Middleweight thread used for sewing upholstery, leather, auto interiors, military gear, dog collars, banners, and blankets. Usually requires a commercial machine. Use needle sizes 110/18 to 125/20

  • Size 138 / Tex 135 / Govt. FF - Middleweight thread whose stitches are noticeable. Use it for sewing upholstery, leather, auto interiors, tents, taupaulns, banners, musical instruments, covers, dog collars. Use needle sizes 125/20 to 140/22

  • Size 207 / Tex 210 / Govt. 3-Cord - Heavyweight thread whose stitches are very noticeable. Use it for sewing leather, upholstery, auto interiors, covers, and horse tack. Use needle sizes 140/22 to 180/24

  • Size 277 / Tex 270 / Govt. 4-Cord - Heavyweight thread whose stitches are highly visible. Use it for sewing saddles and tack, holsters, sheaths, belts, and heavy duty tarpaulins and covers. Requires a commercial or heavy duty machine. Use needle sizes 180/24 to 230/26

  • Size 346 / Tex 350 / Govt. 5-Cord - Heavyweight thread with stitching becoming a focal point. Used for sewing conveyor belts, heavy duty tarpaulins and covers, holsters, sheaths, belts, and shoe repair. Requires a heavy duty machine. Use needle sizes 230/26 to 260/28

  • Size 415 / Tex 410 / 6-Cord - Heavyweight whose stitches become the focal point. Use it for sewing boots and shoes, conveyor belts, heavy duty tarpaulins and covers, holsters, sheaths, belts, and hanging objects. Requires a heavy duty machine. Use needle sizes 280/28 to 330/30

  • Size 554 / Tex 600 / Govt. 8-Cord - Our heaviest nylon thread with about a 1 mm diameter. Its stitches become a focal point. Use it for sewing shoes and boots, conveyor belts, heavy duty tarpaulins and covers, holsters, sheaths, belts, and hanging objects. Use needle sizes 330/30 to 360/32

Thread and Needle Selections Nylon Thread Nylon Thread Strong and easy to use. Great for sewing fabric, leather, canvas, and vinyl. 10 sizes. Some sizes have over 100 colors. Most home sewing machines can use up to size 69. Nylon Thread Polyester Thread Polyester Thread Looks and feels like nylon thread, but with a greater UV resistance. This makes polyester great for outdoor use. Most home sewing machines can use up to size 69. Polyester Thread Lower everyday price. Robison-Anton Our flagship embroidery thread brand. The full line of Robison-Anton polyester, rayon, J Metallic, Moonglow, variegated and Twister Tweed embroidery thread, and color cards. Robison-Anton 2,000 different needles Machine Needles We make it easier to buy the right needle with our Needle Buying Guide, Needle to Thread Size Guide, Machine to Needle Reference, and Groz-Beckert publications. Machine Needles Kevlar (tm) Thread Kevlar (tm) Thread Strong and Heat Resistant. Kevlar thread is about 2.5 times stronger than nylon or polyester. It comes in a pale yellow color. It has almost no stretch, it doesn't melt, and ashes at 800F. Kevlar Thread Cotton Thread Mettler Cotton Thread The full line of Mettler in 28, 40, 50 and 60-Wt, Aurifil closeouts, Valdani closeouts and more. The lower the thread-weight number, the thicker the thread. Cotton Thread Thread - Stabilizers - Bobbins All Embroidery King spool closeouts as low as $3 per spool, metallic specials, stabilizers, bobbins, and much more. All Embroidery Sewing and Serger Thread Sewing Thread Regular stock includes Maxi-Lock and Maxi-Lock Stretch. Also featuring spun polyester closeouts, polyester-core closeouts, and more. Sewing Thread Monofilament Thread Monofilament Thread Clear nylon "invisible" monofilament thread. Transparent so stitches are as invisible as possible for inconspicuous stitch appearance. Monofilament Bobbins - Prewound Prewound Bobbins Nylon and Polyester bobbins in styles A, G, L, M, U, and other styles. Embroidery bobbins, Half price specials, and new budget-friendly 12-packs. Bobbins Save time with prewound bobbins. Half-Price Bobbins and New 12-Packs Check out over 90 half-price bobbins. Some of the boxes are battered, but the bobbins are in perfect condition. Nylon and Polyester bobbins in styles A, G, L, M, U, and other styles. Sometimes boxes of 144 or 72 are more than you need. Our new budget-friendly 12-packs are great for smaller jobs. Shop Now Sewing and Serger Thread Sewing Thread Maxi-Lock, Maxi-Lock Stretch, spun polyester closeouts, polyester-core closeouts, and more. Sewing Thread Waxed Thread Waxed Thread Maine Thread in 6 sizes, close out coils, beeswax, tapered waxed cord, waxed linen blend and more. Waxed Thread Imitation Sinew Imitation Sinew Imitation sinew made from polypropylene or nylon. Waxed and flat. Easy to split to make thinner. Imitation Sinew Hand Stitching Thread Hand Stitching Thread Use of tubes of nylon, polyester, and Kevlar thread for hand sewing and with speedy stitcher awls. Hand Stitch Thread Hand Sewing Needles Hand Sewing Needles C.S. Osborne needles for hand sewing upholstery, leather, canvas, carpet, fabric, and darning. Hand Needles Sewing Accessories Sewing Accessories Thread cone holders, thread sock. elastic, scissors and shears, tape measures, and tool kits and cutters. Sewing Accessories Polyester-Linen Blend Polyester-Linen Polyester-Linen thread has brilliant colors and a silky, smooth texture. Ideal for fine leather and upholstery. Polyester-Linen Thread 1 mm Hemp Twine Hemp Twine Hemp is the strongest of all natural fibers. It is also also ultra-violet and salt water resistant. Hemp Twine Highest Operating Temp. PTFE Fiberglass PTFE coated fiberglass thread - operating temperatures to around F (550 C) after the PTFE coating burns off. PTFE Thread All Specials All Specials Over 1,200 thread and sewing needle specials all in one place. Many products are about 50% off their original price. All Specials For sewing bags shut Bag Closing Thread FDA Compliant to 21-CFR-177.(f), 21-CFR-177. and 21-CFR-178.. Bag Closing Thread For tight knots and cordage. Bank Line Bank line is a black polypropylene twine that is like tennis netting. It is strong and UV resistant. Bank Line Great for levitation tricks Magicians Thread When you separate the yarn filaments you get a strong thread that is invisible to your audience. Magicians Thread About our products Buying Guides Use our buying guides to learn more about the thread on our site and get the right thread and needles. Product Information Welcome to The Thread Exchange Since we have specialized in sewing thread and needles. We are known for our huge product selection, personalized and help, fast shipping, and having most threads in small and large spool sizes. We are proud to be a living wage employer.

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