Glass, optical, mil-g-174, grade c, type 517-645. Both surface polished, rim and chamfers ground. Single layer dielectric coating on one surface. Dimensions, 5.970 in. Lg, 3.500 w, 0.250 in. Thick. All edges chamfered 0.062 in. By 45 deg, all corners beveled, two corners along one side of width 0.250 in. By 45 deg. And two corners along other side of width 0.090 in. By 45 deg. Two mtg slots along one side of width, 0.312 in. W, 0.593 in. O/a depth on 2.375 in. Mtg centers.
No other part numbers with same form, fit, and function found.
NSN 6220-00-172-7641
NSN 5935-01-500-1252
NSN 5905-00-302-7836
NSN 5990-01-344-7778
NSN 5945-01-343-8100
NSN 5945-01-442-7188
NSN 5925-01-379-4109
NSN 5950-01-095-8282
NSN 5945-00-286-8594
NSN 4140-01-141-7692
NSN 5985-01-536-0483
NSN 5945-01-055-4305
Last Updated: 01/12/2025