| Item Name | Retainer Optical El |
| Federal Supply Group (FSG) | Fire Control Equipment |
| Federal Supply Class (FSC) | 1240 Optical Sighting And Ranging Equipment |
| National Item Identification Number (NIIN) | 00-382-1478 (003821478) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| BPNC | HOLE CHAMFER ANGLE IN DEG | 0.0 |
| BPND | HOLE CHAMFER DIAMETER | 0.531 INCHES NOMINAL |
| AGAV | III END ITEM IDENTIFICATION | TELESCOPE MK90 |
| AKCV | DRIVE TYPE | SLOTTED |
| AAUB | HOLE DIAMETER | 0.531 INCHES NOMINAL |
| ABGL | WIDTH | 0.031 INCHES NOMINAL |
| ABHP | OVERALL LENGTH | 0.500 INCHES NOMINAL |
| ABKT | HOLE OR SLOT QUANTITY | 2 |
| ABUJ | THREAD SIZE | 0.890 IN.-36 |
| ABMD | RECESS DIAMETER | 0.765 INCHES NOMINAL |
| ABMH | RECESS DEPTH | 0.438 INCHES NOMINAL |
| MATL | MATERIAL | BRASS |
| AEJZ | DEPTH | 0.031 INCHES NOMINAL |
| STYL | STYLE DESIGNATOR | RECESSED |
| BMTN | DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 |
| BMTQ | GUIDE DESIGN | THREAD RELIEF |
| BMTR | GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE |
| BMTS | INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| BMTT | SETSCREW NOTCH | NOT PROVIDED |
| Relevant Components for NSN - 1240-00-382-1478, 1240003821478 | ||||
| 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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