3M™ Nextel™ Sewing Thread 440 is a machine sewable thread comprised of 440 Grade rovings and rayon serving which enhances sewability. Nextel™ Sewing Thread 440 is designed to withstand continuous use temperatures of up to 2372oF (1300oC). Ideal for sewing Nextel™fabric in high temperature insulation applications. Available heat cleaned and sized.
3M™ Nextel™ Sewing Thread 440, Style BT-30 is a high-temperature machine sewable thread made from strong, continuous alumina-boria-silica fibers (about 90%) and rayon (about 10%), which is added for resiliency, abrasion resistance, and improved sewability. For use with 3M™ Nextel™ Fabrics.
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Breaking Strength (metric)
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22.226 Kilogram per Centimetre
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Denier
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1400 Denier
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Density (g/cc)
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3.05
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Fiber Input Denier
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1400
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Fiber Type Input
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1/4 yarn
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Industries
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Aerospace, Industrial
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Melting point
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3272°F (1800°C)
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Product Composition
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440
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Product Form
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Sewing Thread
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