| 摘要 |
<p>A threaded fastener (48) for securing workpieces (50, 52) with a determinable desired clamp load and including a nut assembly (10) and a bolt (46) with the nut assembly (10) including a nut member (12) with a lock base (14) having a load ring portion (38) and a boss portion (40) with the boss portion (40) adapted to be located in a retention counterbore (22) in the nut member (12) and being of a length to provide a gap between the load ring portion (38) and nut (10) and at a predetermined load to collapse and close the gap and be deformed radially into compressive engagement with the threads of the bolt (46) to provide prevailing torque type lock structure resisting loosening of the nut assembly (10) from the bolt (46) with the predetermined collapse load providing the desired clamp laod and with the gap closure visibly indicating attainment of the desired clamp load.</p> |
