DOUBLE TURNING PREVENTIVE CAP

摘要

PROBLEM TO BE SOLVED: To provide a double turning preventive cap by which either of a bolt or a nut can be fixed in a countersink hole, even when tolls such as a wrench cannot be used in fastening of a bolt and nut. SOLUTION: The double turning preventive cap 10 is provided with approximately cylindrical cap body 11 inserted and mounted on a head part (hex head part 51) of the nut or bolt, and a plurality of claw pieces 12 protruded to a side of the cap body 11. The claw piece 12 is fitted in the countersink hole and elastically stretched in the inside of the countersink hole, thereby being latched and fixed on the inner peripheral surface of the countersink hole so as to prevent double turning. COPYRIGHT: (C)2004,JPO