2520-00-355-0457

8470-16-006-2057 8470160062057 160062057 is a component of body armor that is put into a frame, garment, or the like for the purpose of protecting specific parts of the body from low velocity shell, grenade, or mine fragments. it is usually removable for purposes of replacement.

5306-37-006-2057 5306370062057 370062057

4320-21-006-2057 4320210062057 210062057

5305-01-006-2057 5305010062057 010062057 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.

4730-27-006-2057 4730270062057 270062057 is an adapter having standard pipe threads on one end or an unthreaded end designed to accommodate a pipe. the other end has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. it is designed to join a pipe or pipe fitting to a tube or tube fitting in a straight line.