Mounting buttons
A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.
Classification: Military equipments not identified by kind
NSN 6685-01-616-3023
NSN 6220-01-192-2911
NSN 6620-01-401-5356
NSN 6620-01-513-9674
NSN 5855-01-469-2798
NSN 5998-00-661-0380
NSN 5950-00-237-3335
NSN 4140-01-444-3945
NSN 5920-01-478-9695
NSN 5935-01-608-3840
NSN 5835-01-502-9228
NSN 6135-01-418-4156