The Ring,retaining,optical Element, cataloged under National Stock Number 6650-01-258-0811, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-258-0811 |
| Primary Part Number | 13076701 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Internal Flange Thickness | 0.150 INCHES NOMINAL IN |
| Thread Pitch Diameters | +3.6603 TO 3.6986 INCHES IN |
| Outside Diameter | 3.700 INCHES NOMINAL IN |
| Thread Length | 0.200 INCHES IN |
| Thread Location | EXTERNAL |
| Aperture Diameter | 3.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Size | 3 45/64-32 |
| Screw Thread Series Designator | UNS |
| Thread Class | 2A A |
| Material | STEEL |
| 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 |
|---|---|
| 13076701 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13076701 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 6650-01-258-0811 is a Ring,retaining,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-258-0811 has 1 manufacturer part number on file: 13076701 (Lockheed Martin Corporation).
Key specifications for 13076701: Internal Flange Thickness: 0.150 INCHES NOMINAL IN; Thread Pitch Diameters: +3.6603 TO 3.6986 INCHES IN; Overall Length: 0.780 INCHES NOMINAL IN; Outside Diameter: 3.700 INCHES NOMINAL 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.
NSN 6650-01-258-0811 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.