This specification covers one type of organic fiber in the form of yarn. The product shall be formed as a multiplicity of filaments drawn together and gathered into an approximately parallel arrangement.
SAE AMS3901/9-1985 history
2015SAE AMS3901/9C-2015 Yarn, Organic Fiber (Para-Aramid), High Modulus 380 Denier (420 d tex), 1.2% Finish
2008SAE AMS3901/9C-2008 Yarn, Organic Fiber (Para-Aramid), High Modulus 380 Denier, (420 d tex), 1.2% Finish
1998SAE AMS3901/9B-1998 Yarn, Organic Fiber (Para-Aramid), High Modulus OY 390 (2689)/23.9 Tensile Strength, 17.5 (121)/970 Tensile Modulus 380 Denier, (420 d tex), 1.2% Finish