What is the tensile strength? (don't reply if you don't know. "lots & lots" "heap plenty" and "pretty strong" are not answers.)

It’s a heap of plenty lots of strong! Buy it!

will this work in sewing machines?

Yes, it does. I use it on my Brother PQ 1500sl. You will need to increase the tension because it is thicker than regular thread. I use a size 18 Schmetz leather needle or the Hlx5 needle recommended for my machine.

How about telling us what Tex size the thread is? Thanks.

I compared this thread with small industrial spools and the closest match would be a 69 (tex70) .009 by dial caliper. Similar to jeans, jacket or vehicle upholstery thread. Most home machines should be able to handle this with the right needle. Works perfect for hand stitched repairs.

Would this be good thread to use for backpack repair? I carry a lot of books with me.

Yes it definitely would be.I used it to repair my sofa which gets a lot of use.The sofa material will give way before the the thread does.

Coats And Clark Nylon Inc Extra Strong Upholstery Thread 150

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🧵 Elevate every stitch with strength that lasts and style that speaks.

TRUSTED QUALITY - Made in the USA by Coats & Clark, a leader in premium sewing supplies.
ENDLESS CREATIVITY - 150 yards of sleek black thread to elevate your upholstery, crafting, and repair projects.
UNRIVALED STRENGTH - Bonded 3-ply nylon thread engineered for heavy-duty upholstery projects.
WEATHERPROOF WONDER - Resistant to abrasion, mildew, and UV rays—perfect for both indoor and outdoor use.
PRECISION COMPATIBILITY - Designed for size 18 needles and longer stitch lengths to maximize stitch integrity.

Coats & Clark Nylon Inc. Extra Strong Upholstery Thread is a 150-yard, bonded 3-ply nylon thread designed for heavy-duty upholstery and crafting. It offers superior resistance to weather, abrasion, mildew, and UV damage, making it ideal for both indoor and outdoor projects. Compatible with size 18 needles and optimized for longer stitch lengths, this black thread combines durability with precision, backed by a trusted American brand.

Specifications

ASIN	B004BP43JE
Best Sellers Rank	#1,386,852 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2,218 in Sewing Thread
Brand	Coats & Clark
Brand Name	Coats & Clark
Colour	black
Compatible Crochet Hook Metric Size	90 Millimeters
Compatible Crochet Hook US Size	I-9
Compatible Knitting Needle Metric Size	90 Millimeters
Compatible Knitting Needle US Size	18
Country of Origin	USA
Customer Reviews	4.7 out of 5 stars 7,879 Reviews
Global Trade Identification Number	00073650797408
Item Weight	0.04 Pounds
Manufacturer	Coats & Clark Inc.
Manufacturer Part Number	26527
Material	Nylon
Material Composition	nylon
Material Type	Nylon
Model number	26527
Number of Packs	1
Product Care Instructions	Machine
UPC	073650797408
Unit Count	150.00 Grams

Reviews

B**I

Good strength

I used it for sewing my belt for a machine and it worked just fine

15.05.2024

N**.

Excellent, strong and durable

Very good product, amazing strength.

11.01.2022

R**A

Linha extremamente forte.

Utilizo esta linha para reparar calçado, casacos e malas. Material impecável e extremamente forte.

28.02.2025

J**T

Thread

Easy to work with !

8.12.2025

R**D

As expected

Good strong thread, used for leatherwork, recommend

12.07.2026

A**E

Snabb leverans

Allt bra. Snabb leverans.

23.03.2025

A**R

Strong and Durable Thread

This thread is strong, durable, and worked well for my project. It held up nicely and was easy to sew with. Great choice for upholstery and other heavy-duty sewing needs.

3.06.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago