The Pulley,groove, cataloged under National Stock Number 3020-01-355-0642, 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 Lebus International, Inc.. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-355-0642 |
| Primary Part Number | 4992-C |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lebus International, Inc. |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | NOT INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Design Form | PLAIN |
| Groove Radius | 0.647 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 32.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Groove Depth | 2.500 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Material | STEEL OVERALL |
| Face Width | 1.000 INCHES NOMINAL IN |
| Groove Width | 1.542 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 |
| Part Number | Manufacturer |
|---|---|
| 4990-D ITEM 2 | Lebus International, Inc. (USA) |
| 4992-C PRIMARY | Lebus International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 4990-D | D/9 Drawing number reference only Lebus International, Inc. |
NSN 3020-01-355-0642 is a Pulley,groove, manufactured by Lebus International, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-355-0642 has 2 manufacturer part numbers on file: 4990-D ITEM 2 (Lebus International, Inc.), 4992-C (Lebus International, Inc.).
Key specifications for 4992-C: Integral Cooling Vane: NOT INCLUDED; Bore Feature: NOT INCLUDED; Split Hub Feature: NOT INCLUDED; Design Form: PLAIN. 14 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.