| 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) | 00-382-0990 (003820990) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed, Burke Products Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKT | Hole Or Slot Quantity | 2 |
| ABGL | Width | 0.060 INCHES NOMINAL |
| AATX | Shoulder Length | 0.050 INCHES NOMINAL |
| ABHP | Overall Length | 0.300 INCHES NOMINAL |
| AKCV | Drive Type | SLOTTED |
| BMTT | Setscrew Notch | NOT PROVIDED |
| AATN | Shoulder Diameter | 2.700 INCHES NOMINAL |
| MRC | Decoded Requirement | Clear Text Reply |
| BMTN | Drive Facility Angular Spacing In Deg | 180 |
| BMTS | Internal Annular Serration | NOT PROVIDED |
| BMTQ | Guide Design | THREAD CHAMFER |
| BMTR | Guide Location | BOTH EDGES |
| BPGB | Flange Thread Size | 2.750 IN.-32 |
| STYL | Style Designator | SHOULDERED |
| MATT | Material | COPPER ALLOY |
| AAUB | Hole Diameter | 2.630 INCHES NOMINAL |
| AEJZ | Depth | 0.050 INCHES NOMINAL |
| AGAV | End Item Identification | TELESCOPE MK74 |
| Relevant Components for NSN - 1240-00-382-0990, 1240003820990 | ||||
| 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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