Yarn Fundamentals
Learn how to read yarn specifications and understand the terms used to describe yarn size, filaments and construction.
Learn what 70D, 24F and /2 may describe, and which construction details need supplier confirmation before comparing or ordering yarn.
Start with this guide to separate yarn size, filament count and construction before exploring the more detailed topics below.
Browse Articles
Explore eight guides to yarn specifications, materials, packaging and sample preparation.
Yarn Counts & Specifications
How to Read Yarn Specifications: Understanding 70D/24F/2
Learn what 70D, 24F and /2 may describe, and which construction details need supplier confirmation before comparing or ordering yarn.
Yarn Count Explained: Denier, Tex, Dtex, Ne and Nm
Understand direct and indirect count systems, including denier, tex, dtex, Ne and Nm, and how each expresses yarn size.
Denier vs Dtex vs Tex: Yarn Units and Conversion Guide
Convert between denier, dtex and tex using formulas and worked examples, while keeping component and finished-yarn measurements on the same basis.
24F vs 72F Yarn: What Filament Count Tells You
Compare 24F and 72F at the same denier, calculate average denier per filament, and distinguish those calculations from fabric-performance claims.
Yarn Materials & Packaging
Polyester, Nylon and Spandex: A Guide to Yarn Materials
Distinguish polyester, nylon and spandex as materials, and separate material identity from yarn construction and performance requirements.
Hank Yarn vs Cone Yarn: Understanding Yarn Packages
Compare hank and cone package forms, understand handling and unwinding requirements, and identify package details to confirm with a supplier.
Specification Sheets & Sampling
Yarn Specification Sheet: What Textile Buyers Should Include
Organize material, count, construction, color and packaging requirements, and separate confirmed values, tolerances and unresolved questions.
How to Request a Yarn Sample for Fabric Development
Prepare a sample request from either a known yarn specification or a physical reference, with the application, package needs and trial plan clearly stated.
Related Knowledge
Yarn Types & Structures
The category for filament, textured, covered and combined yarn structures.
Yarn Performance
The category for stretch, durability and other application-dependent yarn properties.
Put Your Yarn Knowledge into Practice
Use the Yarn Development Tool to organize your material, application and performance requirements for your next project.