MIL-T-13505, MILITARY SPECIFICATION: THREAD, SILK, SEWING (FOR PROPELLANT BAGS) (24-JUN-1954)

MIL-T-13505, MILITARY SPECIFICATION: THREAD, SILK, SEWING (FOR PROPELLANT BAGS) (24-JUN-1954)., This specification covers sewing silk thread, for fabricating bags used in the assembly of cannon propellent charge