National Item Identification Number
National Stock Number
Federal Supply Class
An open-or close-wound coil spring consisting of one or more helical coils, wound from different shapes and types of material and finished at the ends, designed to exert pressure in a rotating direction around the coil axis. Excludes springs designed for thermal actuation (springs in which the torsion forces are counteracted by changes in temperature) and SPRING, REINFORCING, HOSE.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
0.559 INCHES NOMINAL