MIL-T-21309E
MIL-T-21309E, MILITARY SPECIFICATION: TOOLS FOR INSERTING AND EXTRACTING HELICAL COIL WIRE SCREW THREAD INSERTS (28 FEB 1975) ., This specification covers taps, thread plug gages, inserting tools, expanding tools, offset and staking tools, and extracting tools for inserting and extracting helical coil wire screw thread inserts.
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