MIL-B-87114A, MILITARY SPECIFICATION: BOLT, RECESS DRIVE, GENERAL SPECIFICATION FOR (26-OCT-1978) [S/S BY NAS4002 and NAS4003]

MIL-B-87114A, MILITARY SPECIFICATION: BOLT, RECESS DRIVE, GENERAL SPECIFICATION FOR (26-OCT-1978) [S/S BY NAS4002 and NAS4003]., This specification describes requirements for aerospace bolts of ultimate tensile stress 160-180 KSI and 180-200 KSI whose heads contain a recess for internal wrenching.