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.

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COATS & CLARK Extra Strong Upholstery Thread, 150-Yard, Black (S964-0900)

Product ID: 316571834

Details

Brand
Coats & Clark
Colour
Black
Item length
137 Meters
Item weight
18 g
Material
Nylon

💪3-ply bonded for max strength

🧵150 yards heavyweight nylon

☀️UV & abrasion resistant

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699 Kč

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In stock

Sold byAmazon Czech RepublicDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧵 Sew Strong, Stand Out — Thread That Works as Hard as You Do!

EXTENDED LENGTH - Generous 150-yard spool keeps you sewing longer without interruptions.
TRUSTED BY PROS - 4.7-star rating from 7,800+ users who rely on strength and quality.
UNMATCHED DURABILITY - Bonded 3-ply nylon thread engineered to withstand heavy wear and tear.
VERSATILE COMPATIBILITY - Perfectly pairs with size 18 needles for smooth machine or hand sewing.
WEATHERPROOF PERFORMANCE - UV and abrasion resistant for flawless outdoor and indoor upholstery projects.

COATS & CLARK Extra Strong Upholstery Thread is a heavyweight 100% nylon, bonded 3-ply thread designed for both machine and hand sewing of indoor and outdoor heavyweight fabrics. Its UV, abrasion, and weather resistance make it ideal for durable upholstery repairs and projects, delivered in a 150-yard black spool trusted by thousands of professionals.

Specifications

ASIN	B004BP43JE
Brand	Coats & Clark
Brand Name	Coats & Clark
Color	Black
Colour	Black
Customer Reviews	4.7 out of 5 stars 7,874 Reviews
Global Trade Identification Number	00073650797408
Item Length	137 Meters
Item Weight	18 g
Item length	137 Meters
Item weight	18 g
Manufacturer	Vista Partners Inc.
Material	Nylon
Material Composition	100 nylon
Material Type	Nylon
Product Care Instructions	Machine Wash
Product care instructions	Machine Wash
UPC	073650797408
Unit Count	137 Meters

Reviews

R**A

Linha extremamente forte.

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

28.02.2025

B**I

Good strength

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

15.05.2024

J**T

Thread

Easy to work with !

8.12.2025

A**E

Snabb leverans

Allt bra. Snabb leverans.

23.03.2025

N**D

Bon

12.10.2024

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699 Kč

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In stock

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