Description / Abstract: This standard establishes engineering design and conformance test procedures for the locking ability performance of prevailing torque type lock screws and nuts that utilize a nonmetallic locking element (hereinafter called "lock screw" or "lock nut")

Note: "Lock" is a generic term used to identify the threaded products covered in this standard. The terms "lock" and "locking" are not intended to imply an indefinite permanency of fixity.