Is t70 the same as 277?

According to the Nylon Thread Guide I presume that by t you mean TEX number. If so then t70 strength is 11 pounds and .29 mm average thickness. 277 is average strength is 45 pounds and average thickness is .59mm. Needle size on t70 is 100/16 to 110/18. Needle size on 277 is 180/24 to 220/26. Hope this helps.

I think the last numbers in the size (in this thread the last numbers are: 210 D/3) mean this thread is 210 denier and 3-ply.

Can you use this in quilting? I'm making a picnic quilt with outdoor fabric on the back but cotton on the top. Just wondering how this would look?

I have used this thread while both quilting and sewing bags/purses on my heavy duty singer machine. I have not tried it on my long arm quilting machine as it is very temperamental and will only work with So Fine quilting thread. This is a tough thread that holds up well and comes in a good variety of colors.

Will this work for a windchime?

I'm not tried it for that but I will say that it's the strongest thread they make for sewing for heavy leather also vinyl it should do just fine... One thing you also could use was monofilament the weather will not bother it

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Mandala Crafts Tex 70 Bonded Nylon Thread for Sewing - 3600 YDs T70 Heavy Duty 12 Assorted Neutral Colors Nylon Thread Size 69 210 D Upholstery Thread for Leather Jeans Weaving

Product ID: 456070147

Details

Brand
Mandala Crafts
Colour
12 Assorted
Item length
3 Inches
Item weight
0.46 Kilograms
Material
Nylon

💪High tensile strength & heat tolerance

🧵3600 YDs ultra-long spool

🛡️UV & moisture resistant

Description

🧵 Sew Strong, Stay Stylish — Thread That Works as Hard as You Do!

PRECISION MEETS POWER - Compatible with heavy-duty needles (16/100 & 18/110) for smooth, lint-free stitching.
BUILT FOR THE ELEMENTS - UV-resistant and weatherproof—perfect for outdoor gear and marine applications.
VERSATILE NEUTRAL PALETTE - 12 assorted neutral colors designed to blend seamlessly with leather, denim, canvas, and more.
ENDLESS CREATIVITY ZERO BREAKAGE - 3600 yards of bonded nylon thread built to outlast your toughest projects.
INDUSTRIAL STRENGTH MILLENNIAL STYLE - From upholstery to fashion, this thread supports your boldest DIY and professional repairs.

Mandala Crafts Tex 70 Bonded Nylon Thread offers 3600 yards of heavy-duty, UV-resistant nylon thread in 12 neutral colors. Engineered for high tensile strength and heat tolerance, it’s ideal for demanding indoor and outdoor sewing projects including upholstery, leather, denim, marine covers, and industrial applications. Compatible with size 16/100 and 18/110 needles, this bonded nylon thread ensures durable, consistent stitching without lint buildup, making it the go-to choice for professionals and creatives seeking reliability and style.

Specifications

ASIN	B091BC7JLK
Brand Name	Mandala Crafts
Color	12 Assorted Neutral Colors
Compatible Crochet Hook US Size	G-6
Compatible Knitting Needle US Size	8
Customer Reviews	4.6 4.6 out of 5 stars (5,878)
Item Length	3 Inches
Item Weight	0.46 Kilograms
Manufacturer	Mandala Crafts®
Manufacturer Part Number	T70 Bonded Nylon Thread
Material Composition	Nylon
Material Type	Nylon
Model Number	T70 Bonded Nylon Thread
Number of Packs	1
Product Care Instructions	Dry Clean Only
UPC	810048986149

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