Anti-back-out fastener for applications under vibration

摘要

A fastener is configured for use in a high vibration application. The fastener includes a nut including a nut body including a cam surface comprising wedge locking action fastening features and a hex shape upon an outer surface of the nut body. The nut further includes a locking washer including matching wedge locking action fastening features to the wedge locking action fastening features of the cam surface and a matching hex shape upon an outer surface of the washer to the hex shape upon the outer surface of the nut body. The nut is configured to include a threaded inner surface selected according to a bolt to be fastened and a nut wall thickness selected according to a load to be applied to the nut.

主权项

1. A fastener for use in a high vibration application, the fastener comprising:
a nut comprising:
a nut body comprising:a cam surface comprising wedge locking action fastening features; anda hex shape upon an outer surface of the nut body; and a locking washer comprising:
matching wedge locking action fastening features to the wedge locking action fastening features of the cam surface; anda matching hex shape upon an outer surface of the washer to the hex shape upon the outer surface of the nut body;wherein the nut is configured to include:
a threaded inner surface selected according to a bolt to be fastened; and a nut wall thickness selected according to a load to be applied to the nut; and wherein the wedge locking action fastening features include a planar should feature cam surface configured to prevent the fastener from turning relative to the lock washer in a tightening direction and comprising a planar shoulder feature slope angle of between forty degrees and fifty degrees between the shoulder feature cam surface and a radial plane extending normal to the rotational axis of a shank of the fastener.