The Gear,spur, cataloged under National Stock Number 3020-01-313-5485, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-313-5485 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.500 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.972 INCHES BOTH ENDS IN |
| Teeth Quantity | 35 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Hardness Rating | 352.0 BRINELL STANDARD MINIMUM AND 388.0 BRINELL STANDARD MAXIMUM TEETH |
| Style Designator | HUBLESS |
| Material Document and Classification | MIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.5000 INCHES NOMINAL IN |
| Nominal Outside Diameter | 3.700 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.214 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.938 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 |
|---|---|
| 26M68-306 | D/9 Drawing number reference only U.S. Government activity |
| 26M68-306-15 | 3/2 Design control — primary reference U.S. Government activity |
| 26M68-306-15 | 5/9 Secondary reference At and T Document Development Organization |
NSN 3020-01-313-5485 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-313-8753, 3040-01-314-5054, 3040-01-315-5940. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-313-5485: Keyway Nominal Width: 0.500 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.972 INCHES BOTH ENDS IN; Teeth Quantity: 35; Body Style: PLAIN, SOLID. 14 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.