Extra Strong Bonded Nylon Thread #138 Tex135 3000yds - Heavy Duty Red

In this review of the Extra Strong Bonded Nylon Thread #138 Tex135, the reviewer finds it best suited to makers and professionals who need a heavy-duty, colorfast stitching solution for leather, upholstery and canvas. The single biggest reason to buy is the combination of commercial-size length and a bonded construction that reduces breakage and untwisting, delivering long continuous sewing runs. For anyone repairing automotive interiors, making saddles or working on protective footwear, the thread's heat-treated dye and lubricant finish make it a practical, reliable choice.

Key Features

• 100% nylon 6.6: Provides high tensile strength and abrasion resistance for long-lasting seams in heavy fabrics.
• Bonded construction: Unique bonding chemistry and coating prevents single-thread untwisting and peeling during high-stress stitching.
• High-temperature dye: Produces uniform, fade-resistant color so visible seams retain a consistent appearance over time.
• Lubricated finish: Specially formulated lubricant eases needle passage and reduces skipped stitches and breakage on industrial machines.
• Commercial size spool: One-pound cone with 3000 yds gives extended continuous use without frequent spool changes, ideal for large projects.

Who It's For

The thread is aimed at leatherworkers, upholsterers, industrial repair shops and serious hobbyists who need a heavy duty, reliable thread for items like sofas, automotive interiors, luggage and protective footwear. Its thickness and bonded finish make it suitable for machine and hand-stitching where durability matters.

It is less suitable for delicate garments, fine hand embroidery or lightweight fabrics where a thinner, less stiff thread would be preferable. If a very fine sewing thread or specialty filament is required, consider a lighter tex or different fiber type.

Pros & Cons

Pros

• High-strength nylon 6.6 construction delivers durable seams that resist abrasion.
• Bonding and coating stop untwisting and reduce skipped stitches on heavy-duty jobs.
• Large 3000 yd cone reduces downtime and suits commercial or high-volume use.

Cons

• At #138 thickness it is too heavy for fine fabrics and delicate sewing.
• Single-cone color choices may require matching attention for visible decorative stitching.

Specifications

Our Verdict

For anyone needing a heavy-duty, commercial-length thread that stands up to abrasion and machine use, this bonded nylon is a strong value. It excels in leather, upholstery and canvas repairs where seam integrity and colorfastness matter, though it is overkill for fine fabrics. The bonded finish and lubricant-treated surface make it a dependable choice for long runs and professional projects.

Frequently Asked Questions

Is this thread suitable for machine sewing?
Yes. The lubricant finish and bonding minimize skipped stitches and breakage on industrial and heavy-duty machines.

What needle size should be used?
Use a heavy needle such as 140/22 or 160/23 for best results with this thickness.

Will the color fade?
The thread is high-temperature dyed for uniform, fade-resistant color, so it keeps appearance over time.