GGG-B-485B, FEDERAL SPECIFICATION: BLOCK, TACKLE, WIRE ROPE, WITH SWIVEL HOOK, (FOR CRANE USE) (08-APR-1964) [NO S/S DOCUMENT]

GGG-B-485B, FEDERAL SPECIFICATION: BLOCK, TACKLE, WIRE ROPE, WITH SWIVEL HOOK, (FOR CRANE USE) (08-APR-1964) [NO S/S DOCUMENT]., This specification covers single and multiple sheave wire rope tackle blocks with swivel hook for use with locomotive, crawler-, truck-, and wheel-mounted cranes.