3020-25-136-8410

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2815-19-004-0329 2815190040329 190040329 is an item designed to inclose the cylinder bore(s) of an engine block to form a combustion chamber(s). it may have liquid cooling passage(s) and/or air cooling fin(s) and may include valve(s), valve guide(s), rocker arm(s), injector tube(s), and the like. it is a component part of an engine, diesel. see also cylinder head, gasoline engine.

5305-19-003-8710 5305190038710 190038710 is an externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.