The Gear,spur, cataloged under National Stock Number 3020-01-054-9531, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-054-9531 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.751 INCHES BOTH ENDS IN |
| Body Style | PLAIN, SOLID |
| Mounting Hole Nominal Diameter | 0.120 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | HUBLESS |
| Tooth Form | STANDARD |
| Bolt Hole Circle Nominal Diameter | 1.017 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.125 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 201834 | 3/9 Design control — primary reference Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace |
NSN 3020-01-054-9531 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6135-01-070-2580. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-054-9531: Bore Nominal Diameter: 0.751 INCHES BOTH ENDS IN; Body Style: PLAIN, SOLID; Mounting Hole Nominal Diameter: 0.120 INCHES AXIALLY THROUGH BODY FIRST END IN; Style Designator: HUBLESS. 8 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.