The Pulley,groove, cataloged under National Stock Number 3020-01-480-3946, 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 Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-480-3946 |
| Primary Part Number | 124-1678562 PC 269 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.375 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Shape | U |
| Outside Diameter | 10.000 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 8.625 INCHES NOMINAL IN |
| Groove Depth | 0.6875 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Protruding Hub Characteristic | PLAIN |
| Distance From Outside Flange/rim to Hub End and Location | 0.125 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.000 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Face Width | 1.250 INCHES NOMINAL IN |
| Furnished Items and Quantity | GRAPH. BRONZE BUSHING |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 124-1678562 PC 269 PRIMARY | Naval Sea Systems Command (USA) |
| 124-1678568 PC 14 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 124-1678568 | D/9 Drawing number reference only U.S. Government activity |
| 124-1678562 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-480-3946 is a Pulley,groove, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-480-3946 has 2 manufacturer part numbers on file: 124-1678562 PC 269 (Naval Sea Systems Command), 124-1678568 PC 14 (Naval Sea Systems Command).
7 possible matches (shared part number, not a government interchangeability claim): 5306-01-480-4432, 5315-01-480-4449, 5315-01-480-4451. Verify interchangeability with system specifications before substitution.
Key specifications for 124-1678562 PC 269: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 1.375 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.