The Pulley,groove, cataloged under National Stock Number 3020-00-540-4843, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-540-4843 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.000 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.625 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.094 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 5.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | MIL-B-6946-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.250 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.094 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.3120 INCHES MINIMUM AND 0.3145 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 630 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.438 INCHES NOMINAL IN |
| Groove Width | 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN |
| Lightening Hole | NOT INCLUDED |
| 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 |
|---|---|
| 60-41098-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-540-4843 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-540-4843: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.000 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 24 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 3020-00-540-4843 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.