The Pulley,cone, cataloged under National Stock Number 3020-01-252-0820, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-252-0820 |
| Item Name | Pulley,cone |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Length | 1.875 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Face Type | STEP GROOVE |
| Groove Shape | V |
| Standard V-Belt Section Designation for Which Designed | S |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Groove Depth | 0.438 INCHES NOMINAL AND 0.500 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Groove Quantity | 4 |
| V Groove Angle in Deg | 30.0 |
| Bore Bearing | NOT INCLUDED |
| Distance From Center of Bore to Bottom of Keyway | 0.367 INCHES NOMINAL IN |
| V Groove Pitch Diameter | 1.625 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN |
| Keyway Width | 0.188 INCHES NOMINAL IN |
| Step Outside Diameter | 1.875 INCHES NOMINAL AND 5.000 INCHES NOMINAL IN |
| Keying Facility | INCLUDED |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.625 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| Face Width | 0.625 INCHES NOMINAL IN |
| Groove Width | 0.500 INCHES NOMINAL IN |
| Lightening Hole | NOT INCLUDED |
| 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 |
|---|---|
| 673-0022 | 3/9 Design control — primary reference Phillips Corporation Div Federal Division |
| 673-0022 | 5/9 Secondary reference Dumore Corporation |
NSN 3020-01-252-0820 is a Pulley,cone, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-252-0820: Integral Cooling Vane: NOT INCLUDED; Bore Length: 1.875 INCHES NOMINAL IN; Design Form: PLAIN; Face Type: STEP GROOVE. 25 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.