The Gear,spur, cataloged under National Stock Number 3020-01-685-5231, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-685-5231 |
| Primary Part Number | 71311753-002 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Teeth Quantity | 48 |
| Surface Treatment Document and Classification | MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | W/COUNTERBORE FIRST END |
| Style Designator | SOLID BACK RING, PROTRUDING HUB, RECESSED HUB |
| Material Document and Classification | MIL-H-6875, CLASS D CONDITION H1025 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.500 INCHES NOMINAL IN |
| Hub Style Designator | PINNED FIRST END |
| Nominal Outside Diameter | 1.563 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 71311753-002 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 71311753 | D/9 Drawing number reference only Lockheed Martin Corporation |
NSN 3020-01-685-5231 is a Gear,spur, manufactured by Lockheed Martin Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-685-5231 has 1 manufacturer part number on file: 71311753-002 (Lockheed Martin Corporation).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-685-6343. Verify interchangeability with system specifications before substitution.
Key specifications for 71311753-002: Teeth Quantity: 48; Surface Treatment Document and Classification: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: PLAIN, SOLID; Bore Style: W/COUNTERBORE FIRST END. 12 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.