AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| 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) | 00-171-4166 (001714166) |
| NCB Code | USA (00) |
| Manufacturer | Selectron Intl Optronics Llc, Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| MRC | Decoded Requirement | Clear Text Reply |
| AJEF | Bevel Depth | 1.000 INCHES NOMINAL |
| BMSG | Polished Surface | BOTH |
| BMSP | Bevel Angle In Deg | 45.000 NOMINAL |
| BMSK | Reflection Reducing Surface | BOTH |
| BMSM | Polished Periphery | NOT PROVIDED |
| ABNM | Thickness | 5.000 MILLIMETERS NOMINAL |
| ABMZ | Diameter | 41.000 MILLIMETERS NOMINAL |
| ZZZV | Fsc Application Data | RANGEFINDER MK 51,MOD 4 |
| BMMX | Refraction Index | 1.5165 NOMINAL |
| MATT | Material | GLASS, OPTICAL, JAN-G-174, TYPE 517-645, GRADE C |
| Relevant Components for NSN - 1240-00-171-4166, 1240001714166 | ||||
| 1280-01-352-9301 (1280013529301) | 1240-00-926-2931 (1240009262931) | 1210-00-152-6109 (1210001526109) | 1240-01-316-0055 (1240013160055) | |
| 1270-01-555-3219 (1270015553219) | 1210-00-381-4453 (1210003814453) | 1210-00-198-5047 (1210001985047) | 1240-01-330-6534 (1240013306534) | |
| 1240-00-610-7758 (1240006107758) | 1240-01-545-5147 (1240015455147) | 1285-00-780-5550 (1285007805550) | 1270-01-205-6896 (1270012056896) | |
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