| 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) | 01-118-9964 (011189964) |
| NCB Code | USA (01) |
| Manufacturer | Seiler Instrument And Manufacturing |
| MRC | Criteria | Characteristic |
|---|---|---|
| SR-5 | DESIGN CONTROL REFERENCE | 12293803 |
| SR-5 | MANUFACTURERS CODE | 18876 |
| MATL | MATERIAL | GLASS, OPTICAL, MIL-G-174, CLASS 1, GRADE B |
| ABMZ | DIAMETER | 2.360 INCHES MINIMUM AND 2.364 INCHES MAXIMUM |
| ABNM | THICKNESS | 0.250 INCHES NOMINAL |
| AGYE | SURFACE FINISH | GROUND AND POLISHED |
| SR-5 | THE MANUFACTURERS DATA | |
| BMSG | POLISHED SURFACE | BOTH |
| BMSM | POLISHED PERIPHERY | NOT PROVIDED |
| Relevant Components for NSN - 1240-01-118-9964, 1240011189964 | ||||
| 1265-00-614-8088 (1265006148088) | 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) | 1285-00-300-9981 (1285003009981) | |
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