Longarm Quilting Thread | 40wt & Machine Options

Machine quilting typically uses a fine, strong thread like 40wt polyester. Isacord 40wt is a top choice for machine quilting because its engineered elasticity and continuous filament construction allow smooth travel stitching across dense quilt designs. It is compatible with longarm quilting machines and handles high-speed free-motion quilting with exceptional reliability.

Yes. 40wt thread is the standard weight for longarm quilting. Isacord 40wt polyester is specifically engineered for high-speed machines, including longarm quilters, offering smooth glide, no thread breaks, and consistent tension across large quilt surfaces. Both 1000m and 5000m spool sizes are available to suit your volume needs.

Polyester thread, like Isacord 40wt, is nearly twice as strong as rayon and offers superior resistance to washing, bleaching, abrasion, and UV fading. Rayon thread has a natural sheen but is more fragile and less colorfast. For production quilting and work that must endure repeated laundering, polyester is the preferred choice.

Isacord quilting thread is available in 1000m spools — ideal for color variety and sampling — and 5000m spools, which are better suited for high-volume production colors such as white, black, and navy. Pre-curated 50-spool kits in both spool sizes are also available for convenience and cost savings.

Isacord offers a full palette of 390 colors, including jewel tones, neutrals, fluorescents, pastels, and seasonal shades. Dr. DTG, as the USA Master Distributor, maintains the complete 390-color catalog in stock across both 1000m and 5000m spool sizes, giving quilters and embroiderers access to the entire range.

Yes. Isacord 40wt polyester thread is wash-fast, boil-fast, lightfast, and resistant to chlorine bleach and abrasion. This makes it an excellent choice for quilts, work wear, sportswear, and any textile that requires frequent washing or exposure to harsh cleaning agents without risk of color fading or thread degradation.