2815-15-144-6221

2815-99-880-7748 2815998807748 998807748 is a mushroom or tulip-shaped item having a circular head with a conical face and an extended stem used to regulate the flow of incoming fuel-air mixture or air into the combustion chamber or exhaust gases from the combustion chamber of a reciprocating internal combustion engine.

5325-21-880-7748 5325218807748 218807748 is an insert which must have a hole that may be internally threaded with a flange on one end. it may have an undercut on the end opposite the flange to provide a shoulder to allow for mating with another insert. pre-assembled items will consist of an expansion sleeve and a body which may be flared. internally threaded items may have a self-locking feature. excludes insert, screw thread.

5365-00-880-7748 5365008807748 008807748 is a thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. it is designed to maintain a predetermined distance between two surfaces. for round items without a hole and having a solid rectangular cross-section use disk, solid, plain. items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. for items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. when thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. see also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.