AIA NAS 1503-1510-1981 (Inactive)Bolt, 100 Degree Flush Head Hi-Torque Recess, Short Thread Alloy Steel, 160,000 psi; (Superseded March 1977; Use NAS 1790 and NAS 380) Rev. 6
1981AIA NAS 1503-1510-1981 (Inactive)Bolt, 100 Degree Flush Head Hi-Torque Recess, Short Thread Alloy Steel, 160,000 psi; (Superseded March 1977; Use NAS 1790 and NAS 380) Rev. 6