The Pulley,groove, cataloged under National Stock Number 3020-00-862-8420, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-862-8420 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.750 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.390 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Groove Radius | 0.094 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN |
| Groove Shape | U |
| Outside Diameter | 4.200 INCHES MINIMUM AND 4.210 INCHES MAXIMUM IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-A-250/4, ALLOY 2024, T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.218 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | BALL |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.046 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.313 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.482 INCHES NOMINAL IN |
| Groove Width | 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN |
| Lightening Hole | 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 |
|---|---|
| 4C21029-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-862-8420 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-862-8420: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.750 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Bearing Quantity: 1. 26 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.