The Ring,retaining,optical Element, cataloged under National Stock Number 1240-00-682-8064, 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 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-00-682-8064 |
| Primary Part Number | 8574785 |
| 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 | 0.685 INCHES NOMINAL IN |
| Thread Pitch Diameters | +0.0625 TO 0.7500 INCHES IN |
| Outside Diameter | 3.060 INCHES NOMINAL IN |
| Thread Length | 0.782 INCHES IN |
| Thread Location | INTERNAL |
| Aperture Diameter | 2.375 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Size | 2 7/8-16 |
| Screw Thread Series Designator | UN |
| Thread Class | 3B |
| Material | STEEL COMP 303 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8574785 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| 8574785 | Spencer Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 1240006828064 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 1240-00-682-8064 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 1240-00-682-8064 has 2 manufacturer part numbers on file: 8574785 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), 8574785 (Spencer Industries Inc).
Key specifications for 8574785: Internal Flange Thickness: 0.685 INCHES NOMINAL IN; Thread Pitch Diameters: +0.0625 TO 0.7500 INCHES IN; Outside Diameter: 3.060 INCHES NOMINAL IN; Thread Length: 0.782 INCHES IN. 11 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.
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.