The Ring,retaining,optical Element, cataloged under National Stock Number 1240-01-262-6458, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-262-6458 |
| Primary Part Number | 11733434 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Internal Flange Thickness | 0.150 INCHES NOMINAL IN |
| Outside Diameter | 2.750 INCHES NOMINAL IN |
| Aperture Diameter | 2.328 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 11733434 | Seiler Instrument and Manufacturing Company, Incorporated (USA) |
| 11733434 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| A11677 | Autodyne Manufacturing Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 11733434 | 5/9 Secondary reference Sterling Mfg and Supply Inc |
| 11733434 | 5/2 Secondary reference U.S. Government activity |
NSN 1240-01-262-6458 is a Ring,retaining,optical Element, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-262-6458 has 3 manufacturer part numbers on file: 11733434 (Seiler Instrument and Manufacturing Company, Incorporated), 11733434 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), A11677 (Autodyne Manufacturing Co Inc).
Key specifications for 11733434: Internal Flange Thickness: 0.150 INCHES NOMINAL IN; Outside Diameter: 2.750 INCHES NOMINAL IN; Aperture Diameter: 2.328 INCHES NOMINAL IN; Material: ALUMINUM ALLOY 6061. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1240-01-262-6458 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.