FR Threads
FR sewing thread is thread made from meta-aramid staple fibre, an inherently flame-retardant polymer that does not melt, drip or support combustion. XM Textiles’ FR threads range from 80% meta-aramid/20% polyester (XM-50) to 100% meta-aramid (XM-60, XM-70), for stitching garments built to EN ISO 11612, EN ISO 11611, EN 469 and arc-flash EN 61482-2.
-
Read more
FR Sewing Threads | 80% Meta-Aramid, 20% Polyester
(0 Certificates)
Flame Retardant – Sewing Threads
Key features: Flame Retardant, Sewing Threads
Certifications: ISO 3146, EN 61482-2
XM-50 28S/2
Read moreFR Sewing Threads | 80% Meta-Aramid, 20% Polyester
(0 Certificates)
Flame Retardant – Sewing Threads
Key features: Flame Retardant, Sewing Threads
Certifications: ISO 3146, EN 61482-2
-
Read more
FR Sewing Threads | 100% Meta-Aramid
(0 Certificates)
Flame Retardant – Sewing Threads
XM-60 is a high-tenacity sewing thread spun from 100% meta-aramid staple fiber. The 30S/3 three-ply construction delivers the seam strength, abrasion resistance and dimensional stability required for protective workwear that must survive repeated industrial laundering and high-temperature exposure.[show_more more="Show more" less="Show less" color="#629e11" align="left" ]Meta-aramid’s flame-retardant property comes from the polymer itself, so the thread will not melt or drip and its FR performance is permanent — well-suited to pairing with both inherent FR fabrics and durable FR-treated fabrics across the XM Fireline range. Tested and certified XM-60 30S/3 has been independently tested by AITEX (Spanish Textile Research Institute, ENAC-accredited laboratory) against the sewing thread requirement of EN 61482-2:2020 — the European standard for protective clothing against the thermal hazards of an electric arc.
Test method: EN ISO 3146:2000 Method B (Differential Scanning Calorimetry per EN ISO 11357-3:2018) Pass criterion: No melting at 260 °C ± 5 °C
XM-60 result: No melting observed across the full test range up to 300 °C
Report reference: AITEX 2025EP0638 (issued 28 February 2025)
This certifies XM-60 as suitable for use in structural seams of arc-flash protective clothing built to EN 61482-2:2020, and confirms its thermal stability for use in garments certified to EN ISO 11612 (heat & flame), EN ISO 11611 (welding), EN 469 (firefighter clothing) and NFPA 2112 / NFPA 70E systems. XM-60 also holds OEKO-TEX® Standard 100 certification, verifying it is free from harmful substances and safe for prolonged skin contact.Key performance
Does not melt — verified to 300°C in DSC testing Char temperature ≈ 400°C, decomposition above 425°C (typical of meta-aramid) Inherently flame retardant — FR performance is permanent and laundry-stable Compatible with all major FR fabric systems: meta-aramid, para-aramid, FR cotton (inherent and treated), FR cotton/nylon, modacrylic blends and PBITypical applications
Structural seams in:
- arc-flash suits and coveralls for utility and electrical workers
- firefighter station- and structural-wear
- oil, gas and petrochemical FR coveralls
- welder’s clothing
- military combat uniforms
- molten-metal aprons and foundry PPE.[/show_more]
Key features: Flame Retardant, Sewing Threads
Certifications: ISO 3146, EN 61482-2
XM-60 30S/3
Read moreFR Sewing Threads | 100% Meta-Aramid
(0 Certificates)
Flame Retardant – Sewing Threads
XM-60 is a high-tenacity sewing thread spun from 100% meta-aramid staple fiber. The 30S/3 three-ply construction delivers the seam strength, abrasion resistance and dimensional stability required for protective workwear that must survive repeated industrial laundering and high-temperature exposure.[show_more more="Show more" less="Show less" color="#629e11" align="left" ]Meta-aramid’s flame-retardant property comes from the polymer itself, so the thread will not melt or drip and its FR performance is permanent — well-suited to pairing with both inherent FR fabrics and durable FR-treated fabrics across the XM Fireline range. Tested and certified XM-60 30S/3 has been independently tested by AITEX (Spanish Textile Research Institute, ENAC-accredited laboratory) against the sewing thread requirement of EN 61482-2:2020 — the European standard for protective clothing against the thermal hazards of an electric arc.
Test method: EN ISO 3146:2000 Method B (Differential Scanning Calorimetry per EN ISO 11357-3:2018) Pass criterion: No melting at 260 °C ± 5 °C
XM-60 result: No melting observed across the full test range up to 300 °C
Report reference: AITEX 2025EP0638 (issued 28 February 2025)
This certifies XM-60 as suitable for use in structural seams of arc-flash protective clothing built to EN 61482-2:2020, and confirms its thermal stability for use in garments certified to EN ISO 11612 (heat & flame), EN ISO 11611 (welding), EN 469 (firefighter clothing) and NFPA 2112 / NFPA 70E systems. XM-60 also holds OEKO-TEX® Standard 100 certification, verifying it is free from harmful substances and safe for prolonged skin contact.Key performance
Does not melt — verified to 300°C in DSC testing Char temperature ≈ 400°C, decomposition above 425°C (typical of meta-aramid) Inherently flame retardant — FR performance is permanent and laundry-stable Compatible with all major FR fabric systems: meta-aramid, para-aramid, FR cotton (inherent and treated), FR cotton/nylon, modacrylic blends and PBITypical applications
Structural seams in:
- arc-flash suits and coveralls for utility and electrical workers
- firefighter station- and structural-wear
- oil, gas and petrochemical FR coveralls
- welder’s clothing
- military combat uniforms
- molten-metal aprons and foundry PPE.[/show_more]
Key features: Flame Retardant, Sewing Threads
Certifications: ISO 3146, EN 61482-2
-
Read more
FR Sewing Threads | 100% Meta-Aramid
(0 Certificates)
Flame Retardant – Sewing Threads
Key features: Flame Retardant, Sewing Threads
Certifications:
XM-70 40S/3
Read moreFR Sewing Threads | 100% Meta-Aramid
(0 Certificates)
Flame Retardant – Sewing Threads
Key features: Flame Retardant, Sewing Threads
Certifications:
Purchase FR Sewing Threads
FR sewing threads are specifically designed for stitching various types of fire-resistant clothing such as welders’ jackets, oil workers’ overalls, power grid workers’ uniforms, and firefighters’ suits.
The key features of flame retardant threads include:
1. Non-combustible and non-melting properties.
2. Exceptional strength and durability.
You can purchase aramid threads, select suitable fabrics for your flame retardant clothing, and request a quote either by phone or through our Request form. Our team of managers is always ready to assist you in finding the optimal solution for your workwear or protective wear needs.