The Ring,retaining,optical Element, cataloged under National Stock Number 1240-01-237-0009, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1240-01-237-0009 |
| Primary Part Number | 13076422 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Groove Location | INSIDE END OF THREAD |
| Internal Flange Thickness | 0.0271 INCHES NOMINAL IN |
| Groove Diameter | 1.196 INCHES NOMINAL IN |
| Thread Pitch Diameters | +1.1713 TO 1.1759 INCHES IN |
| Outside Diameter | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM IN |
| Thread Length | 0.125 INCHES IN |
| Thread Location | INTERNAL |
| Aperture Diameter | 0.675 INCHES MINIMUM AND 0.685 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Inner Groove Width | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Thread Size | 1 3/16-40 |
| Screw Thread Series Designator | UNS |
| Thread Class | 2B |
| Material | ALUMINUM ALLOY 6061 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 13076422 | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13076422 | 3/9 Design control — primary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 1240-01-237-0009 is a Ring,retaining,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-237-0009 has 1 manufacturer part number on file: 13076422 (Lockheed Martin Corporation).
Key specifications for 13076422: Groove Location: INSIDE END OF THREAD; Internal Flange Thickness: 0.0271 INCHES NOMINAL IN; Groove Diameter: 1.196 INCHES NOMINAL IN; Thread Pitch Diameters: +1.1713 TO 1.1759 INCHES IN. 14 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.