D. The speed nuts are cross drilled to move along a threaded rod without turning them; their threads do not engage until they meet the end, then they can be tightened.
B, C & D. Though any 1/2-13 threaded rod or bolt may be used with our bench anchor, we offer a small selection of flat-head and round-head fasteners here for convenience. The 1-1/16"dia. washer, for...