| Item Name | Ring Retaining Opti |
| Federal Supply Group (FSG) | Fire Control Equipment |
| Federal Supply Class (FSC) | 1240 Optical Sighting And Ranging Equipment |
| National Item Identification Number (NIIN) | 00-026-8107 (000268107) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| AGAV | III END ITEM IDENTIFICATION | TELESCOPE MK60 |
| AJYP | SCREW THREAD SERIES DESIGNATOR | UNS |
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ABET | THREAD LENGTH | 0.400 INCHES |
| ABHP | OVERALL LENGTH | 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM |
| APJC | THREAD LOCATION | INTERNAL |
| ABKV | OUTSIDE DIAMETER | 5.240 INCHES MINIMUM AND 5.260 INCHES MAXIMUM |
| ABUJ | THREAD SIZE | 5-20 |
| MATL | MATERIAL | COPPER |
| ADWA | INNER GROOVE WIDTH | 0.0500 INCHES MINIMUM AND 0.0700 INCHES MAXIMUM |
| BMTL | INTERNAL FLANGE THICKNESS | 0.140 INCHES NOMINAL |
| BMTY | GROOVE LOCATION | INSIDE FACE OF FLANGE |
| SURF | SURFACE TREATMENT | DULL BLACK |
| Relevant Components for NSN - 1240-00-026-8107, 1240000268107 | ||||
| 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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