Material specification is qq-c-390 or astm b81
A resilient metal item, circular or nearly circular, which is designed to be inserted into an internal or external groove and retained by its own spring action, or it may have external prongs or projections designed to be inserted into a hole and retained by spring action of the prongs which grip by imbedding into the material. For items having internal prongs which perform the same function, see push on nut. It is used to keep and/or lock a part(s) in position, as a ball bearing on a shaft or in a housing. See also clip, retaining and pin, lock. Excludes ring, connecting, round.
Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 6135-00-078-9931
NSN 5935-01-521-0206
NSN 6240-01-160-8499
NSN 5910-01-046-0585
NSN 6150-00-099-6919
NSN 6130-00-386-4937
NSN 4140-01-361-9198
NSN 6110-01-215-2384
NSN 5855-01-380-9950
NSN 6645-01-337-1806
NSN 5935-01-651-9517
NSN 6645-01-042-0467