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 2925-00-233-5644
NSN 6685-01-054-2412
NSN 5998-00-898-8010
NSN 5996-01-060-6746
NSN 5915-01-521-2953
NSN 6220-01-300-8126
NSN 6320-00-456-0836
NSN 5998-01-141-5698
NSN 5910-01-145-4297
NSN 5835-01-416-6455
NSN 6620-00-243-7766
NSN 6320-01-274-2501