MIL-HDBK-57G, DEPARTMENT OF DEFENSE HANDBOOK: LISTING OF FASTENER MANUFACTURER'S IDENTIFICATION SYMBOLS (16-OCT-2012)

MIL-HDBK-57G, DEPARTMENT OF DEFENSE HANDBOOK: LISTING OF FASTENER MANUFACTURER'S IDENTIFICATION SYMBOLS (16-OCT-2012)., This handbook provides a listing of identifying head markings of companies that have submitted their information. This handbook contains the names, addresses, and the symbols of all relevant fastener manufacturers. This handbook is for guidance only and cannot be cited as a requirement.