The Ring,retaining,optical Element, cataloged under National Stock Number 1240-01-269-2707, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 12 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 | 1240-01-269-2707 |
| Primary Part Number | 3183204 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Internal Flange Thickness | 0.045 INCHES NOMINAL IN |
| Thread Pitch Diameters | +0.8992 TO 0.9375 INCHES IN |
| Outside Diameter | 0.938 INCHES NOMINAL IN |
| Thread Length | 0.185 INCHES IN |
| Thread Location | EXTERNAL |
| Aperture Diameter | 0.785 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Inner Groove Width | 0.0450 INCHES NOMINAL IN |
| Thread Size | 0.938-32 |
| Screw Thread Series Designator | UN |
| Thread Class | 3A A |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 3183204 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 1240-01-269-2707 is a Ring,retaining,optical Element, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-269-2707 has 1 manufacturer part number on file: 3183204 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 3183204: Internal Flange Thickness: 0.045 INCHES NOMINAL IN; Thread Pitch Diameters: +0.8992 TO 0.9375 INCHES IN; Outside Diameter: 0.938 INCHES NOMINAL IN; Thread Length: 0.185 INCHES IN. 12 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 1240-01-269-2707 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.