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Bonded Nylon Thread Sizes :Five Common And Applications

Filament Thread

In the intricate world of sewing, the choice of thread size is an often underestimated yet critical factor that can significantly impact the outcome of a project. Among the diverse range of options available, understanding the nuances of bonded nylon thread sizes is key to achieving optimal results.

Bonded nylon thread sizes are denoted by a numbering system, which might seem complex at first glance. However, breaking down the system reveals its simplicity:

  • The thread size is represented by a number, such as 46, 69, 138, or 207.
  • The higher the number, the thicker the thread.

This numbering convention holds true across various thread materials, making it easier to compare sizes and choose the appropriate thread for your project.

Five common bonded nylon thread sizes and applications

Here’s a breakdown of some common bonded nylon thread sizes and their typical applications:

Size 46:

  • Application: Lightweight fabrics, delicate stitching, and intricate embroidery.
  • Usage: Ideal for fine garments, lingerie, and other lightweight materials.

Size 69:

  • Application: General sewing, lightweight to medium-weight fabrics, topstitching, and decorative stitching.
  • Usage: Suitable for apparel, home textiles, and light upholstery projects.

Size 92:

  • Application: Medium-weight fabrics, upholstery, canvas, and denim.
  • Usage: Well-suited for a range of sewing projects, from clothing to bags and accessories.

Size 138:

  • Application: Heavy-duty fabrics, leather, upholstery, and outdoor gear.
  • Usage: Ideal for projects requiring strength and durability, such as bags, belts, and tents.

Size 207:

  • Application: Very heavy fabrics, leatherworking, and industrial sewing.
  • Usage: Commonly used in heavy-duty applications, such as automotive upholstery and industrial equipment.

Comparative Thread Sizes

Thread Size (Denier)Equivalent Tex SizeCommon Applications
4660Lightweight fabrics
6990General sewing
92120Medium-weight fabrics
138180Heavy-duty fabrics
207270Very heavy fabrics

Choosing the Right Size

Selecting the appropriate bonded nylon thread size involves considering the material, project type, and desired outcome:

  1. Fabric Type:Match the thread size to the fabric weight. Light fabrics benefit from finer threads, while heavy fabrics require thicker threads for sufficient strength.
  2. Project Type:Consider the project’s intended use. Delicate garments demand finer threads, while outdoor gear and upholstery warrant thicker threads.
  3. Stitch Type:The desired stitch type also influences thread size. Decorative stitching may benefit from a thicker thread to create visual impact.


Understanding bonded nylon thread sizes unlocks a world of possibilities in the realm of sewing. Armed with knowledge of the numbering system and its implications, you can confidently select the ideal thread size for each project.

Whether you’re working on delicate garments, robust outdoor gear, or intricate leatherwork, the right thread size ensures that your creations withstand the test of time. So, let this guide be your companion as you navigate the intricate tapestry of bonded nylon thread sizes, ensuring each stitch contributes to a masterpiece of craftsmanship.