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 AMS3901/1C-1998 history
1998SAE AMS3901/1C-1998 Yarn, Organic Fiber (Para-Aramid), High Modulus OY 390 (2689)/22.5 Tensile Strength, 18 (124)/1010 Tensile Modulus 195 (215 d tex) Denier, 0.6% Finish