Speedway Bonded Nylon 66 Thread Tex 210 (Size 207) — 8.8 oz Spool

Speedway Tex 210 (size 207) is a high-tenacity bonded nylon 66 sewing thread supplied on an 8.8 oz (250 g) spool, available in 2 colors. Bonding fuses the three plies together, so the thread does not fray or break at industrial sewing speeds and the seam keeps the abrasion resistance that upholstery, leather and canvas work demands. Ships from Miami, FL.

Technical Specifications

8.8 oz, not 8

Bonded nylon in this class is normally sold on 4 oz or 8 oz spools. This one holds 8.8 oz (250 g) — roughly 10% more thread than the common 8 oz spool, on the same footprint and the same spool change. Worth checking when you compare prices: the cheaper spool is often the smaller one.

What is it used for?

• Harness, slings and load straps
• Very heavy canvas and sailmaking
• Sole leather and industrial saddlery
• Anywhere Tex 135 falls short

What needle size should I use?

Use a Nm 140–180 (Singer 22–24) needle with this thread.

That is the size. The system — DBx1, 135x17, 134-35 — depends on your machine, not on the thread. How to identify yours · Industrial machine needles

On leather and coated materials the point matters as much as the size, and the point does depend on the material rather than the machine. Groz-Beckert's leather point guide describes LR (45° cut to the right) as the reference for shoes, leather goods, upholstery, belts and car seats; D/DH (triangular cut) for thick, hard leather; and SD for thin leather, foils and coated materials such as vinyl. We stock these as leather point needles.

Careful with “Nm”: for thread it means 1000/Tex (Tex 210 = Nm 4.8), but for needles it means the blade diameter in hundredths of a millimetre (Nm 110 = 1.10 mm). They are not the same number. Conversion formulas from Coats; government sizes from the A-A-59826 specification published by American & Efird.

Not sure between two sizes?

This is the top of the range. If your machine skips stitches or the thread frays at Tex 210, the answer is almost always to drop to Tex 135 and add a second row of stitching, not to fight the machine.

The rest of this line

• Tex 45 (Size 46)
• Tex 70 (Size 69)
• Tex 92 (Size 92)
• Tex 135 (Size 138)

Frequently Asked Questions

What needle size should I use with Tex 210?

Nm 140–180 (Singer 22–24). If the stitch looks starved or the thread frays, go one size up before changing anything else.

What is the difference between Tex 210 and size 207?

None — they are the same thread described in two numbering systems. Tex is the weight in grams of 1,000 metres; the commercial size comes from the older US system.

Should I use Tex 210 or the next size?

This is the top of the range. If your machine skips stitches or the thread frays at Tex 210, the answer is almost always to drop to Tex 135 and add a second row of stitching, not to fight the machine.

How much thread is on the spool?

Each spool holds 250 g of thread (8.8 oz). We do not publish a yardage figure because the bonding resin adds weight that the nominal Tex does not account for — quoting a converted number would be a guess, and we would rather not guess.

Will this work on a domestic machine?

No. Tex 210 needs an industrial machine — walking foot or compound feed. A domestic will not pull this diameter through reliably, and forcing it usually means skipped stitches and a bent needle.