| 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) | 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 | ||||
| 1265-00-614-8088 (1265006148088) | 1240-01-118-9964 (1240011189964) | 1285-00-449-6275 (1285004496275) | 1270-01-119-6523 (1270011196523) | |
| 1290-01-330-1595 (1290013301595) | 1270-00-313-9175 (1270003139175) | 1280-00-868-4875 (1280008684875) | 1290-01-546-6194 (1290015466194) | |
| 1290-01-416-9390 (1290014169390) | 1290-01-069-3391 (1290010693391) | 1270-00-019-7649 (1270000197649) | 1270-00-023-3389 (1270000233389) | |
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