| Item Name | Window Optical Inst |
| INC Code | 10908 |
| Federal Supply Group (FSG) | Fire Control Equipment |
| Federal Supply Class (FSC) | 1240 Optical Sighting And Ranging Equipment |
| National Item Identification Number (NIIN) | 01-081-5346 (010815346) |
| NCB Code | USA (01) |
| Manufacturer | Seiler Instrument And Manufacturing |
| MRC | Criteria | Characteristic |
|---|---|---|
| FEAT | SPECIAL FEATURES | MATL: RED GLASS,TYPE III,SPEC MIL-F-12717; ELEMENT IN ACCORD WITH SPEC MIL-O-13830; SURFACE QUALITY 80-50; MAX WEDGE NOT TO EXCEED 15 MINUTES (0.250 DEG); RIM AND CHAMFERS GROUND; NOT TO EXCEED 0.010 (FACE WIDTH); USED ON AIMING CIRCLE M2A2 |
| SR-5 | MANUFACTURERS CODE | 19200 |
| SR-5 | THE MANUFACTURERS DATA | |
| SR-5 | DESIGN CONTROL REFERENCE | 8211655 |
| MATL | MATERIAL | GLASS |
| ABMZ | DIAMETER | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| ABNM | THICKNESS | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| BMSG | POLISHED SURFACE | BOTH |
| BMSM | POLISHED PERIPHERY | PROVIDED |
| Relevant Components for NSN - 1240-01-081-5346, 1240010815346 | ||||
| 1240-00-382-1631 (1240003821631) | 1240-01-613-3001 (1240016133001) | 1240-01-275-0099 (1240012750099) | 1240-00-989-3555 (1240009893555) | |
| 1240-00-382-4710 (1240003824710) | 1240-01-622-6368 (1240016226368) | 1240-00-003-8406 (1240000038406) | 1240-01-086-5245 (1240010865245) | |
| 1240-01-618-7781 (1240016187781) | 1240-01-309-9289 (1240013099289) | 1240-01-217-2365 (1240012172365) | 1240-00-026-8140 (1240000268140) | |
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