| Item Name | Window Optical Inst |
| Federal Supply Group (FSG) | Fire Control Equipment |
| Federal Supply Class (FSC) | 1240 Optical Sighting And Ranging Equipment |
| National Item Identification Number (NIIN) | 00-641-0661 (006410661) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed, Grayco Optical Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 189658PC11 | navair and navsea managed | window optical inst | RFQ |
| 189658PC11 | grayco optical corp | window optical inst | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ZZZV | III FSC APPLICATION DATA | RANGEFINDER MK 42,ALL MODS |
| MATL | MATERIAL | GLASS, OPTICAL, JAN-G-174, TYPE 517-645, GRADE C |
| ABMZ | DIAMETER | 36.000 MILLIMETERS NOMINAL |
| ABNM | THICKNESS | 4.000 MILLIMETERS NOMINAL |
| BMMX | REFRACTION INDEX | 1.5170 NOMINAL |
| BMSG | POLISHED SURFACE | BOTH |
| BMSK | REFLECTION REDUCING SURFACE | BOTH |
| BMSM | POLISHED PERIPHERY | NOT PROVIDED |
| Relevant Components for NSN - 1240-00-641-0661, 1240006410661 | ||||
| 1210-00-157-9549 (1210001579549) | 1260-01-238-4410 (1260012384410) | 1260-00-130-6758 (1260001306758) | 1210-00-210-3969 (1210002103969) | |
| 1240-01-581-6246 (1240015816246) | 1210-00-609-5408 (1210006095408) | 1220-00-987-7219 (1220009877219) | 1280-00-320-0136 (1280003200136) | |
| 1270-00-798-2394 (1270007982394) | 1280-01-187-2137 (1280011872137) | 1270-00-867-0718 (1270008670718) | 1270-00-992-3701 (1270009923701) | |
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