2915-21-900-2120

5305-01-303-8109 5305013038109 013038109 is a screw, (as modified) to which has been assembled one or more nonremovable washer(s).

2590-01-303-5188 2590013035188 013035188 is an item or items employed individually or conjunctively to modify vehicular equipment components.

2520-12-303-5188 2520123035188 123035188 RING, SYNCHRON-, ME

1560-14-303-5190 1560143035190 143035190 is an item of various configuration that is an integral member of the airframe structure. it is specifically designed for the purpose of maintaining, positioning, joining, and strengthening the aircraft structure. it may include holes for mounting purposes or to form an assembly.

5342-12-303-5048 5342123035048 123035048 is an item which sacrificially corrodes when coupled to a more noble metal in a conducting medium.