4820-99-257-3700

5305-14-375-3415 5305143753415 143753415 is an externally threaded fastener whose threaded portion is of one nominal diameter. the head has an internal socket or multiple spline for use with an inserted driver. a locking feature may be incorporated in the design of the head or threads. excludes items with bevel (conical) heads. see bolt, internal wrenching. excludes screw, shoulder; and screw, machine.

4940-17-111-3876 4940171113876 171113876 is a device designed to remove grease and foreign matter from mechanical parts and like items, usually metallic, by purging action in vaporized or liquid solvent or solvent-free solution confined in a tank or similar vessel. it usally includes a circulating pump, heating mechanism, and may include an auxiliary supply tank and spray equipment, and/or an ultrasonic generator. for ittems consisting essentially of a metal vessel with heating equipment, and adaptable to functions other than degreasing (e.g., wax melting), see tank, hot dip (as modified). see also parts cleaning can. safety, bench. excludes cleaner, ultrasonic.

5330-37-515-7056 5330375157056 375157056 is a deformable material which prevents the passage of matter through the joint formed when two faces are joined. it may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. it may be made to any predetermined dimension and shape. excludes flat disks, items made of felt material and items having joints. for round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. excludes disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.