| 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) | 00-344-7639 (003447639) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed, Optical Technology Devices Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABVL | Aperture Diameter | 0.548 INCHES NOMINAL |
| ABKV | Outside Diameter | 0.695 INCHES NOMINAL |
| AJYP | Screw Thread Series Designator | UNS |
| ABHP | Overall Length | 0.125 INCHES NOMINAL |
| AAJF | Thread Direction | RIGHT-HAND |
| ABUJ | Thread Size | 17/32-32 |
| AAJD | Thread Class | 3A |
| AAJE | Thread Pitch Diameters | +0.6747 TO 0.6950 INCHES |
| BMTL | Internal Flange Thickness | 0.031 INCHES NOMINAL |
| MRC | Decoded Requirement | Clear Text Reply |
| APJC | Thread Location | EXTERNAL |
| ABET | Thread Length | 0.094 INCHES |
| MATT | Material | STEEL |
| Relevant Components for NSN - 1240-00-344-7639, 1240003447639 | ||||
| 1210-00-157-9549 (1210001579549) | 1260-01-238-4410 (1260012384410) | 1260-00-130-6758 (1260001306758) | 1210-00-210-3969 (1210002103969) | |
| 1240-01-581-6246 (1240015816246) | 1210-00-609-5408 (1210006095408) | 1220-00-987-7219 (1220009877219) | 1280-00-320-0136 (1280003200136) | |
| 1270-00-798-2394 (1270007982394) | 1280-01-187-2137 (1280011872137) | 1270-00-867-0718 (1270008670718) | 1270-00-992-3701 (1270009923701) | |
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