Rounded corners with a 0.500 in. Radius. Beveled edges on back surface 0.030 in. By 45 deg.
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 5910-00-081-1795
NSN 5990-00-067-6791
NSN 6130-01-493-8372
NSN 6240-01-321-3116
NSN 4140-01-471-0446
NSN 6610-01-502-7106
NSN 5950-01-197-5916
NSN 4140-00-523-9058
NSN 5945-01-325-3668
NSN 6150-00-536-4983
NSN 6130-00-890-0553
NSN 6620-01-158-7309