The Spacer,optical Element, cataloged under National Stock Number 6650-01-171-6964, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Spacer,optical Element |
| FSC / FSG | 6650 — Optical Instruments, Test Equipment, Components and Accessories (FSG 66) |
| Manufacturers | Lockheed Martin Corporation (CAGE 04939) |
| Parameter | Value |
|---|---|
| NSN | 6650-01-171-6964 |
| Primary Part Number | 13074981 |
| Item Name | Spacer,optical Element |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Smallest End Internal Bevel Angle | 19.4 DEGREES NOMINAL |
| End Internal Bevel Angle | 26.6 DEGREES NOMINAL |
| Style Designator | SPACER |
| Material Document and Classification | QQ-A-200/8,T6511 FED SPEC SINGLE MATERIAL RESPONSE |
| Straight Bore Inside Diameter | 1.938 INCHES NOMINAL 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 | N |
| Part Number | Manufacturer |
|---|---|
| 13074981 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 13074981 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
NSN 6650-01-171-6964 is a Spacer,optical Element, manufactured by Lockheed Martin Corporation, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-171-6964 has 1 manufacturer part number on file: 13074981 (Lockheed Martin Corporation).
Key specifications for 13074981: Smallest End Internal Bevel Angle: 19.4 DEGREES NOMINAL; End Internal Bevel Angle: 26.6 DEGREES NOMINAL; Style Designator: SPACER; Material Document and Classification: QQ-A-200/8,T6511 FED SPEC SINGLE MATERIAL RESPONSE. 6 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.