The Gear,spur, cataloged under National Stock Number 3020-01-160-5901, 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 Altra Industrial Motion Corp.. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-160-5901 |
| Primary Part Number | YF45A |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Altra Industrial Motion Corp. |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.000 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 3.453 INCHES FIRST END IN |
| Teeth Quantity | 45 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.875 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 4.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 4.700 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.250 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| YF45A PRIMARY | Altra Industrial Motion Corp. (USA) |
| Reference | Meaning |
|---|---|
| YF5A | C/1 Advisory reference — outside the item-of-supply concept Air & Liquid Systems Corp Div Aerofin |
| YF45A | C/1 Advisory reference — outside the item-of-supply concept Air & Liquid Systems Corp Div Aerofin |
NSN 3020-01-160-5901 is a Gear,spur, manufactured by Altra Industrial Motion Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-160-5901 has 1 manufacturer part number on file: YF45A (Altra Industrial Motion Corp.).
1 possible match (shared part number, not a government interchangeability claim): 2920-01-184-0803. Verify interchangeability with system specifications before substitution.
Key specifications for YF45A: Bore Nominal Diameter: 1.000 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.453 INCHES FIRST END IN; Teeth Quantity: 45; 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.
NSN 3020-01-160-5901 has DEMIL Code B. 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.