The Ring,retaining,optical Element, cataloged under National Stock Number 1240-00-768-8772, 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 18 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-00-768-8772 |
| Primary Part Number | 7688772 |
| 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 |
| Groove Location | ADJACENT TO INTERNAL FLANGE |
| FSC Application Data | PERISCOPE,TANK |
| Internal Flange Thickness | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 1,CLASS 2,BLACK MIL SPEC SINGLE TREATMENT RESPONSE |
| Groove Diameter | 1.435 INCHES MINIMUM AND 1.445 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-225/3, T3 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.525 INCHES MINIMUM AND 1.535 INCHES MAXIMUM IN |
| Thread Length | 0.187 INCHES IN |
| Thread Location | INTERNAL |
| Aperture Diameter | 1.197 INCHES MINIMUM AND 1.203 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Inner Groove Width | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Thread Size | 1.430 IN.-48 IN |
| Screw Thread Series Designator | UNS |
| Surface Treatment | ANODIZE |
| Mounting Configuration | INTERNAL THREAD |
| Thread Class | 2A A |
| Material | ALUMINUM ALLOY 2011 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1240-00-768-8772 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 1240-00-768-8772 has 2 manufacturer part numbers on file: 7688772 (Starwin Industries, Llc), 7688772 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-330-5308. Verify interchangeability with system specifications before substitution.
Key specifications for 7688772: Groove Location: ADJACENT TO INTERNAL FLANGE; FSC Application Data: PERISCOPE,TANK; Internal Flange Thickness: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625,TYPE 1,CLASS 2,BLACK MIL SPEC SINGLE TREATMENT RESPONSE. 18 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.