| Item Name | Ring Retaining Optical Element |
| Federal Supply Group (FSG) | Fire Control Equipment |
| Federal Supply Class (FSC) | 1240 Optical Sighting And Ranging Equipment |
| National Item Identification Number (NIIN) | 00-115-4471 (001154471) |
| NCB Code | USA (00) |
| Manufacturer | Seiler Instrument And Manufacturing, Sterling Mfg Co, Valcore Manufacturing Llc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABUJ | Thread Size | 2.063-16 |
| ABKV | Outside Diameter | 2.359 INCHES MINIMUM AND 2.391 INCHES MAXIMUM |
| ABET | Thread Length | 0.494 INCHES |
| AAJF | Thread Direction | RIGHT-HAND |
| BMTL | Internal Flange Thickness | 0.092 INCHES NOMINAL |
| AAJD | Thread Class | 3A |
| AAJE | Thread Pitch Diameters | +2.0219 TO 2.0273 INCHES |
| BMTY | Groove Location | ADJACENT TO INTERNAL FLANGE |
| MDCL | Material Document And Classification | WW-T-700/3, ALLOY 2024, T3 FED SPEC 1ST MATERIAL RESPONSE AND WW-T-700/6, ALLOY 6061, T6 FED SPEC 2ND MATERIAL RESPONSE |
| SFTT | Surface Treatment | ENAMEL |
| ADWA | Inner Groove Width | 0.176 INCHES MINIMUM AND 0.186 INCHES MAXIMUM |
| AJYP | Screw Thread Series Designator | UNS |
| MRC | Decoded Requirement | Clear Text Reply |
| ABVL | Aperture Diameter | 1.718 INCHES MINIMUM AND 1.723 INCHES MAXIMUM |
| ALGC | Mounting Configuration | LOCKSCREW COLLAR 1 |
| AAVZ | Groove Diameter | 2.078 INCHES NOMINAL |
| APJC | Thread Location | INTERNAL |
| ABHP | Overall Length | 1.082 INCHES NOMINAL |
| MATT | Material | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 |
| Components Related to NSN - 1240-00-115-4471, 1240001154471 | ||||
| 1220-00-793-1917 (1220007931917) | 1240-01-374-8126 (1240013748126) | 1270-01-583-1993 (1270015831993) | 1240-00-381-9067 (1240003819067) | |
| 1220-00-210-4190 (1220002104190) | 1240-00-025-0136 (1240000250136) | 1285-00-789-8269 (1285007898269) | 1285-01-550-3324 (1285015503324) | |
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