Introduction
This manual provides essential information for the proper use and care of your AMANN White Bonded Nylon Upholstery Thread, Size 138 Tex 135. Please read these instructions carefully before use to ensure optimal performance and longevity of the product.
AMANN Bonded Nylon Thread is a high-quality, heavy-duty sewing thread designed for demanding applications. Its excellent abrasion resistance and high tensile strength make it suitable for a wide range of projects.
Product Overview
The AMANN Bonded Nylon Upholstery Thread is a robust thread made from 100% bonded nylon. It is specifically engineered for heavy-duty sewing tasks where durability and strength are paramount. This thread is suitable for use with both industrial and most home sewing machines, being the largest size generally compatible with home machines.
- Material: 100% Bonded Nylon
- Size: #138 (Tex 135)
- Length: 3,000 Yards
- Color: White
- Key Features: Excellent abrasion resistance, high tensile strength, good sewability, consistent diameter.

Image 1: A cone of AMANN White Bonded Nylon Upholstery Thread, Size 138 Tex 135. The thread is wound neatly on a white cone, showcasing its bright white color and smooth texture.
Setup and Preparation
- Machine Compatibility: Ensure your sewing machine is capable of handling heavy-duty threads. While Size 138 Tex 135 is the largest size generally compatible with home sewing machines, some older or lighter-duty models may require adjustments or may not be suitable. Consult your sewing machine's manual for thread size recommendations.
- Needle Selection: Use a heavy-duty needle appropriate for upholstery or leather. A larger needle size (e.g., size 18 or 20) with a sharp point is recommended to prevent skipped stitches and thread breakage.
- Tension Adjustment: Bonded nylon thread often requires higher tension settings than standard polyester or cotton threads. Perform test stitches on scrap fabric to adjust the upper and bobbin tensions until a balanced stitch is achieved.
- Bobbin Winding: Wind bobbins evenly and at a moderate speed. Over-winding or uneven winding can lead to tension issues.
Operating Instructions
Follow these guidelines for optimal performance when sewing with AMANN Bonded Nylon Upholstery Thread:
- Fabric Compatibility: Ideal for upholstery, drapery, luggage, purses, wallets, shoes, leather, vinyl, canvas products, and other heavy materials.
- Stitch Length: Use a slightly longer stitch length than you would for lighter fabrics. This helps prevent puckering and allows the heavy thread to form strong, even stitches.
- Sewing Speed: Sew at a consistent, moderate speed. High speeds can generate excessive heat, which may weaken nylon thread.
- Lubrication: For very thick or difficult materials, a silicone lubricant applied to the thread or needle can reduce friction and improve stitch quality.
- Backtacking: Always backtack at the beginning and end of seams to secure stitches, especially in high-stress areas.
Maintenance and Storage
- Storage: Store the thread cone in a cool, dry place away from direct sunlight and extreme temperatures. Prolonged exposure to UV light can degrade nylon.
- Cleaning: The thread itself does not require cleaning. For finished products, refer to the fabric care instructions. The product care instructions state "Machine Wash" for the thread itself, implying it can withstand washing when integrated into a textile.
- Handling: Avoid unnecessary handling of the thread to prevent contamination or damage.
Troubleshooting Common Issues
| Issue | Possible Cause | Solution |
|---|---|---|
| Thread Breakage | Incorrect needle size, high machine speed, incorrect tension, burrs on needle plate or hook. | Use a larger needle, reduce sewing speed, adjust tension, inspect machine for sharp edges. |
| Skipped Stitches | Wrong needle type or size, bent needle, incorrect timing, insufficient tension. | Ensure correct needle for heavy fabrics, replace bent needle, check machine timing (professional service), adjust tension. |
| Uneven Stitches / Puckering | Improper tension balance, incorrect stitch length, fabric drag. | Adjust upper and bobbin tension, increase stitch length, use a walking foot for difficult fabrics. |
| Bobbin Thread Issues | Improperly wound bobbin, incorrect bobbin tension, lint in bobbin case. | Rewind bobbin evenly, adjust bobbin tension, clean bobbin case. |
Specifications
- Product Type: Bonded Nylon Sewing Thread
- Brand: AMANN
- Color: White
- Material: 100% Bonded Nylon
- Thread Size: #138
- Tex Size: 135
- Length: 3,000 Yards
- Cone Weight: Approximately 1 lb (16 oz)
- UPC: 747465138038
- ASIN: B07CVSC39R
- Care Instructions: Machine Wash (for finished products)
Warranty Information
AMANN products are manufactured to high-quality standards. This thread is guaranteed to be free from defects in material and workmanship at the time of purchase. Due to the nature of sewing applications and varying machine conditions, specific performance guarantees beyond initial quality cannot be provided. For concerns regarding product quality, please contact your retailer or AMANN customer support with proof of purchase.
Customer Support
For further assistance, technical questions, or to report any issues, please contact AMANN customer support through their official website or the retailer from whom you purchased this product. Please have your product details (Model: Size 138 Tex 135, ASIN: B07CVSC39R) ready when contacting support.
Manufacturer: Amann
Date First Available: May 5, 2018