Description
Nylon Bonded Thread B138 (T135) – 1/4 lb Spool
B138 bonded nylon thread, also sold under the Tex size T135, is a heavy-duty thread for work that has to hold under load. It is the size reached for on upholstery, heavier leather goods and outdoor gear, where the seam carries weight or takes constant flexing. The bonding treatment coats the filaments so the thread resists fraying at the needle and feeds cleanly through heavy machines. Supplied on 1/4 lb spools in black and white.
Why choose this thread
- Heavy-duty strength for seams that carry load
- Bonded finish resists fraying and unravelling where the thread passes through the needle
- Feeds smoothly on industrial walking-foot, flatbed and post-bed machines
- Good quality nylon with consistent color from spool to spool
- Holds a bold, visible stitch on thick leather
- Nylon construction resists moisture, abrasion and mildew
Best uses
- Upholstery and furniture work
- Heavy leather goods – belts, straps, bags, sheaths
- Outdoor gear, packs and tarpaulins
- Webbing and heavy canvas
- Shoe and boot construction where a strong seam is needed
Specifications
- Thread size: B138 (Tex 135)
- Material: Bonded nylon
- Recommended needle: 125/20 to 140/22
- Spool weight: 1/4 lb
- Colors: Black, White
Choosing the right thread size
Thread size is matched to the weight of what you are sewing and to your needle.
- B33 (T30) – needle 80/12 to 90/14 – lightweight garments, linings, fine topstitching
- B46 (T45) – needle 90/14 to 100/16 – light to medium weight
- B69 (T70) – needle 100/16 to 110/18 – general purpose: footwear, bags, belts
- B138 (T135) – needle 125/20 to 140/22 – heavy duty: upholstery, outdoor gear
- B207 (T210) – needle 140/22 to 180/24 – extra heavy: harness, saddlery, heavy webbing
