Extra Strong Bonded Nylon Thread #138 Tex135 3000yds - Durable

Our review of the Extra Strong Bonded Nylon Thread #138 Tex135 finds it best suited for makers and repair professionals who need a heavy-duty, reliable sewing thread. The single biggest reason to buy is its construction: spun from 100% nylon 6.6 with a bonded coating and high-temperature dyeing that together deliver consistent strength, minimal breakage, and uniform color across long runs. For anyone stitching leather, upholstery, canvas, or heavy outdoor gear, this cone-size thread provides the durability and smooth needle passage that make long jobs less frustrating.

Key Features

• Premium nylon 6.6 construction: Provides a high baseline tensile strength that stands up to repeated stress and abrasion in heavy fabrics.
• Bonded and lubricated finish: The bonding chemistry and lubricant treatment reduce skipped stitches and make the thread run smoothly through needles and machine tension systems.
• Commercial size and length: The 1 lb cone with 3000 yds is economical for long projects and professional workflows, cutting down on cone changes.
• Heat-stable dyeing: High-temperature dyeing produces consistent, fade-resistant color that maintains appearance after exposure and laundering.
• Good stretchability: Slight elasticity helps form tight, durable stitches that resist popping under load.

Who It's For

This thread is aimed at leatherworkers, upholstery shops, and canvas repairers who need a heavy, consistent thread that performs reliably on thick materials and through industrial needles. It is also a strong choice for makers of luggage, saddles, and outdoor gear where abrasion resistance and colorfastness matter.

Hobby sewers working exclusively with lightweight dress fabrics should look elsewhere for finer, softer thread choices; similarly, if project aesthetics require ultra-fine invisible stitching, a lighter gauge would be preferable. For most heavy-duty sewing and repair tasks, this thread offers the balance of strength and handling that professionals expect.

Pros & Cons

Pros

• High tensile strength and abrasion resistance suitable for heavy materials.
• Bonded coating and lubricant minimize breakage and skipped stitches during long runs.
• Large 3000 yd cone offers good value and reduces downtime for commercial use.

Cons

• Thickness (0.41 mm) is too large for delicate fabrics or fine-detail stitching.

Specifications

Our Verdict

The Extra Strong Bonded Nylon Thread #138 Tex135 is a practical, cost-effective choice for professionals and serious hobbyists who work with leather, upholstery, canvas, and heavy outdoor fabrics. Its bonded finish, heat-stable dyeing, and commercial cone size deliver reliable stitching, fewer interruptions, and durable results, making it good value for long or demanding sewing jobs.

Frequently Asked Questions

Is this thread suitable for leather saddle work?
Yes. The heavy gauge, bonded finish, and abrasion resistance make it well suited for saddles and other heavy leather goods.

Will it work on an industrial walking foot machine?
Yes. The cone size and bonded, lubricated finish are intended for long runs on industrial and heavy-duty domestic machines using recommended needles.

Does the color resist fading?
Yes. The thread uses high-temperature dyeing for uniform, fade-resistant colors that hold up to wear and exposure.