| 摘要 |
1,154,293. Bolts. FORD MOTOR CO. Ltd. 21 Feb., 1968 [27 Feb., 1967], No. 8398/68. Heading F2H. A threaded fastener 18 comprises a head 20 and shank, said shank having a first finned portion 24 located adjacent the head having an outside diameter smaller than the head, a second finned portion 26 located adjacent the first finned portion and having an outside diameter smaller than the outside diameter of the first finned portion and a screw threaded portion 28 having a major diameter smaller than the outside diameter of the second finned portion. The threaded fastener is used with a first member 10 having a hole 12 therein smaller than the first finned portion which is adapted to be located therein, a second member 14 having a hole 16 therein smaller than the second finned portion which is adapted to be located therein and a threaded nut 30 engaging the screwthreaded portion. The engagement of the fins with the walls of the holes 12, 16 prevents movement of the fastener within the holes. |
