The Cell,optical Element, cataloged under National Stock Number 1240-00-321-8551, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-00-321-8551 |
| Primary Part Number | 11744822 |
| Item Name | Cell,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 |
| Overall Diameter | 2.312 INCHES NOMINAL IN |
| Eccentric Construction | NOT PROVIDED |
| Thread Location | INTERNAL AND EXTERNAL |
| Chamfer Location | LARGER DIAMETER END |
| Thread Direction | RIGHT-HAND |
| Chamfer Size | 0.375 IN. BY 15 DEG IN |
| Thread Size | 7/8-32 AND 1 1/16-28 |
| Screw Thread Series Designator | UN |
| Thread Class | 2B AND 2A A |
| Material | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 11744822 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 1240-00-321-8551 is a Cell,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 1240-00-321-8551 has 1 manufacturer part number on file: 11744822 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 11744822: Overall Diameter: 2.312 INCHES NOMINAL IN; Eccentric Construction: NOT PROVIDED; Overall Length: 1.344 INCHES NOMINAL IN; Thread Location: INTERNAL AND EXTERNAL. 10 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 1240-00-321-8551 has DEMIL Code D. 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.