FF-S-325, FEDERAL SPECIFICATION: SHIELD, EXPANSION; NAIL, EXPANSION; AND NAIL, DRIVE SCREW (DEVICES, ANCHORING, MASONRY) (10 SEP 1957) [SUPERSEDING FF

FF-S-325, FEDERAL SPECIFICATION: SHIELD, EXPANSION; NAIL, EXPANSION; AND NAIL, DRIVE SCREW (DEVICES, ANCHORING, MASONRY) (10 SEP 1957) [SUPERSEDING FF-D-200] [S/S BY A-A-1922, A-A-1923, A-A-1924, A-A-1925, A-A-55614, A-A-55615]., This specification covers threaded and unthreaded anchoring devices for attaching equipment and fixtures to an existing solid masonry.