Bore does not extend all the way through seat
A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore designed to accommodate the end of the spring. It is used to position the spring, but does not encase the spring or restrain lateral motion. It may be used in conjunction with a retainer, helical compression spring. Excludes washer (1), (as modified); seat, ball socket and holder, spring. See also rotor, engine poppet valve.
NSN 6145-01-273-0077
NSN 5915-00-553-8755
NSN 5945-00-127-9977
NSN 5998-01-453-3292
NSN 5990-00-288-1820
NSN 5985-01-389-1927
NSN 5935-01-451-7281
NSN 6650-01-194-6997
NSN 5985-00-932-0440
NSN 5990-00-315-9343
NSN 6610-01-517-1901
NSN 5990-00-428-1895