Nylon Thread Size 138 / Tex 135 / Govt. FF
Nylon Thread - Size 138

Equivalent to Tex 135 (T-135) and Mil-Spec size FF

Size 138 (Tex 135) nylon thread is a middleweight thread that is sometimes used for heavier weight sewing because stitches are noticeable. Typical uses include auto upholstery, awnings, tents, musical instruments, covers, tarpaulins. It requires a commercial machine and a size 20 to 22 needle as explained in our Buying Guide.


Buying Guide

Use and Size Guide

Buying Guide - PDF

Use and Size Guide - PDF



Color Code

Color Selection--Click Colors for Spool Sizes and Prices

Click a color chip for
spool sizes, prices, and availability


Small Spools

2 and 4 Ounce spools for small jobs.

Thread Sock

For Storage. Also helps prevent puddling.

Thread Boxes

Mixed nylon and poly in 5, 10, and 50 LB boxes.

Monocord Nylon

Single ply, flat, stronger, low profile stitching

Related Products

Polyester Thread

Looks, feels, sews like nylon. Better Sunlight (UV) resistance.

Half-Price Bobbins

Styles A/15, G, L, M at $20 a gross. About 100 selections

100 Yard Nylon Tube

Popular nylon sizes and colors on hand sewing tubes. Just $4.50

100 Yard Poly Tubes

Popular polyester sizes and colors on hand sewing tubes. Just $4.50

Waxed Thread

Large color selection in Sizes 207 through 554

Poly-Linen Blend

Silky-smooth Irish polyester-linen blend.

The Thread Exchange 291A Merrimon Ave Weaverville, NC 28787 - 800-915-2320