The Cell,optical Element, cataloged under National Stock Number 1240-01-172-4565, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Cell,optical Element |
| FSC / FSG | 1240 — Optical Sighting and Ranging Equipment (FSG 12) |
| Manufacturers | Lockheed Martin Corporation (CAGE 04939) |
| Parameter | Value |
|---|---|
| NSN | 1240-01-172-4565 |
| Primary Part Number | 13074768 |
| Item Name | Cell,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Element Securing Method | RETAINER RING |
| Overall Diameter | 0.938 INCHES NOMINAL IN |
| Drive Type | SLOTTED DRIVE ON PERIPHERY |
| Eccentric Construction | NOT PROVIDED |
| Thread Pitch Diameters | +0.9167 TO 0.9202 INCHES IN |
| Material Document and Classification | MIL-P-46131,TYPE 3,CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.150 INCHES IN |
| Thread Location | EXTERNAL |
| Chamfer Location | BOTH ENDS |
| Thread Direction | RIGHT-HAND |
| Chamfer Size | 0.030 IN.BY 45 DEG IN |
| Thread Size | 15/16-40 |
| Screw Thread Series Designator | UNS |
| Thread Class | 2A A |
| Material | PLASTIC POLYPHENYLENE OXIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 13074768 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13074768 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 1240-01-172-4565 is a Cell,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-172-4565 has 1 manufacturer part number on file: 13074768 (Lockheed Martin Corporation).
Key specifications for 13074768: Element Securing Method: RETAINER RING; Overall Diameter: 0.938 INCHES NOMINAL IN; Drive Type: SLOTTED DRIVE ON PERIPHERY; Eccentric Construction: NOT PROVIDED. 15 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 1240-01-172-4565 has DEMIL Code D. 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.