The Pulley,groove, cataloged under National Stock Number 3020-01-355-6241, 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 Grove U.s. Llc Dba Grove Us Llc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-355-6241 |
| Primary Part Number | 6-718-000550 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Grove U.s. Llc Dba Grove Us Llc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.250 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 4.500 INCHES NOMINAL IN |
| Shaft Size for Which Designed | 1.249 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Criticality Code Justification | FEAT |
| Style Designator | PLAIN |
| Groove Depth | 1.120 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.249 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Face Width | 1.000 INCHES NOMINAL IN |
| Groove Width | 0.760 INCHES NOMINAL 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 2HG21 | Oshkosh Defense Llc (USA) |
| 6-718-000550 PRIMARY | Grove U.s. Llc Dba Grove Us Llc (USA) |
| Reference | Meaning |
|---|---|
| 2HG21 | 5/9 Secondary reference Oshkosh Corp |
NSN 3020-01-355-6241 is a Pulley,groove, manufactured by Grove U.s. Llc Dba Grove Us Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-355-6241 has 2 manufacturer part numbers on file: 2HG21 (Oshkosh Defense Llc), 6-718-000550 (Grove U.s. Llc Dba Grove Us Llc).
Key specifications for 6-718-000550: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 1.000 INCHES NOMINAL IN. 21 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.