244,211. Gabriel, C. E. P. Oct. 8, 1924. Multiple-bolt fastenings of the type wherein the bolts are displaced by a handoperable rotary element having arcuate slots with which projections on the bolts engage. The rotary element e is acted upon by a spring h which tends to maintain the bolts b, c, d in the shot position. Springs i carrying headed pins l may also be provided to assist the outward movement of the bolts. Four bolts may be used and one or more of these may be pivoted to the casing instead of sliding in the grooves a<1>, c<1>, d<1>.