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 6145-01-338-8344
NSN 6220-00-364-1605
NSN 5990-00-067-6791
NSN 6130-01-242-3548
NSN 6130-01-248-6607
NSN 5855-01-593-6422
NSN 6320-01-214-0350
NSN 5895-01-060-9784
NSN 6610-01-086-1879
NSN 5835-00-233-6327
NSN 5996-01-094-5587
NSN 6145-01-500-4002