The Ring,retaining,optical Element, cataloged under National Stock Number 1240-01-233-9488, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1240-01-233-9488 |
| Primary Part Number | 13083237 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Internal Flange Thickness | 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN |
| Outside Diameter | 2.115 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN |
| Aperture Diameter | 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Mounting Configuration | THREE HOLES EQUALLY SPACED ON 1.745 IN. MINIMUM 1.755 IN. MAXIMUM DIAMETER CIRCLE,0.139 IN. MINIMUM 0.145 IN. MAXIMUM DIAMETER IN |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 13083237 | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13083237 | 3/9 Design control — primary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 1240-01-233-9488 is a Ring,retaining,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-233-9488 has 1 manufacturer part number on file: 13083237 (Lockheed Martin Corporation).
Key specifications for 13083237: Internal Flange Thickness: 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN; Outside Diameter: 2.115 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN; Aperture Diameter: 1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN; Mounting Configuration: THREE HOLES EQUALLY SPACED ON 1.745 IN. MINIMUM 1.755 IN. MAXIMUM DIAMETER CIRCLE,0.139 IN. MINIMUM 0.145 IN. MAXIMUM DIAMETER IN. 5 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.