National Item Identification Number
National Stock Number
Federal Supply Class
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
803-4384538 SH 21 PIECE 139
810-4384538 SH 21, PIECE 139