The Pulley,groove, cataloged under National Stock Number 3020-00-640-2282, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-640-2282 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 2.500 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 2.438 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Radius | 0.219 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 9.750 INCHES NOMINAL IN |
| Spline Length | 2.4375 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-S-633, FS1020-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 8.1892 INCHES MINIMUM AND 8.2019 INCHES MAXIMUM IN |
| Spline Major Diameter | 1.999 INCHES MINIMUM AND 2.003 INCHES MAXIMUM IN |
| Groove Depth | 0.563 INCHES NOMINAL IN |
| Bore Type | STRAIGHT SPLINE |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Spline Quantity | 6 |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.1875 INCHES NOMINAL BOTH ENDS IN |
| Minor Diameter | 1.799 INCHES MINIMUM AND 1.800 INCHES MAXIMUM SPLINE IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 2.000 INCHES NOMINAL IN |
| Material | STEEL COMP 1020 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 2.500 INCHES NOMINAL IN |
| Groove Width | 2.125 INCHES NOMINAL 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 |
| Reference | Meaning |
|---|---|
| 54C22032 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-640-2282 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-640-2282: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 2.500 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 29 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 3020-00-640-2282 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.