MIL-R-12221D, MILITARY SPECIFICATION: RIVET, SOLID, ALUMINUM ALLOY, GRADE 7277, TEMPERED (25 FEB 1985)

MIL-R-12221D, MILITARY SPECIFICATION: RIVET, SOLID, ALUMINUM ALLOY, GRADE 7277, TEMPERED (25 FEB 1985)., This specification covers 7277 aluminum alloy rivets for structural use. Rivets of this composition are to be hot driven only at temperatures between 850 Deg. F and 975 Deg. F.