DOD-I-63276A, MILITARY SPECIFICATION: INSERT, SCREW THREAD, LOCKED IN, RING LOCKED, SERRATED, METRIC, GENERAL SPECIFICATION FOR (21 OCT 1983) [NO S/S DOCUMENT]

DOD-I-63276A, MILITARY SPECIFICATION: INSERT, SCREW THREAD, LOCKED IN, RING LOCKED, SERRATED, METRIC, GENERAL SPECIFICATION FOR (21 OCT 1983) [NO S/S DOCUMENT]., This specification covers metric, locked in, screw thread inserts with and without metallic internal thread locking feature. The method of locking in the insert is by the means of a serrated collar and an accessory lockring with matching serrations installed within the parent material to prevent rotation. The accessory lockring is also covered herein.