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) | 00-171-7900 (001717900) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| ZZZV | III FSC APPLICATION DATA | TELESCOPE MK 61 MODS 0-5 |
| MATL | MATERIAL | GLASS, OPTICAL, JAN-G-174, TYPE 517-645, GRADE C |
| ABMZ | DIAMETER | 46.000 MILLIMETERS NOMINAL |
| ABNM | THICKNESS | 4.800 MILLIMETERS NOMINAL |
| AJEF | BEVEL DEPTH | 1.100 MILLIMETERS NOMINAL |
| BMMX | REFRACTION INDEX | 1.5170 NOMINAL |
| BMSG | POLISHED SURFACE | BOTH |
| BMSK | REFLECTION REDUCING SURFACE | BOTH |
| BMSM | POLISHED PERIPHERY | NOT PROVIDED |
| BMSP | BEVEL ANGLE IN DEG | 45.000 NOMINAL |
| Relevant Components for NSN - 1240-00-171-7900, 1240001717900 | ||||
| 1280-00-832-2369 (1280008322369) | 1270-00-992-6265 (1270009926265) | 1240-01-470-9967 (1240014709967) | 1285-00-052-5551 (1285000525551) | |
| 1270-00-512-4964 (1270005124964) | 1270-01-011-6726 (1270010116726) | 1290-01-438-6575 (1290014386575) | 1270-01-193-4143 (1270011934143) | |
| 1240-00-693-5590 (1240006935590) | 1240-01-399-5137 (1240013995137) | 1270-00-512-2254 (1270005122254) | 1220-00-946-2875 (1220009462875) | |
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