National Item Identification Number
National Stock Number
Federal Supply Class
A washer with one surface shaped to fit a similarly curved surface, the other surface of the washer being either parallel with the shaped surface or in the form of raised boss having either a flat bearing surface or a recess designed for holding a nut. Excludes WASHER (1), CONCAVE and WASHER (1), CONVEX.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
0.391 INCHES NOMINAL
1.000 INCHES NOMINAL