Optical glass type 517-642, gr a; 1.000 in. Dia; 0.669 in depth
No other part numbers with same form, fit, and function found.
NSN 5999-01-653-2621
NSN 6105-00-126-7727
NSN 6220-01-080-6362
NSN 6650-01-502-8629
NSN 5960-01-053-4358
NSN 5950-01-476-3236
NSN 6220-00-935-4308
NSN 6645-01-213-1739
NSN 4140-01-165-4561
NSN 5960-01-563-0020
NSN 5895-01-140-5466
NSN 5920-00-754-5252
Last Updated: 02/16/2025