The Pulley,groove, cataloged under National Stock Number 3020-01-256-0780, 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 Palfinger Marine Usa, Llc. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-256-0780 |
| Primary Part Number | D-405252 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Palfinger Marine Usa, Llc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 5.000 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Bearing Quantity | 2 |
| Securing Method | DRILLED HOLE AND THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 2.000 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Radius | 0.500 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 15.000 INCHES NOMINAL IN |
| Shaft Size for Which Designed | 1.500 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Groove Depth | 1.500 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Counterbore Depth | 0.062 INCHES NOMINAL IN |
| Groove Quantity | 2 |
| Counterbore Location | AA END |
| Counterbore Diameter | 3.149 INCHES NOMINAL IN |
| Securing Hole Quantity | 8 AND 6 |
| Bolt Circle Diameter | 8.250 INCHES NOMINAL IN |
| Thread Size | 3/8-16 |
| Drilled Hole Diameter | 1.750 INCHES NOMINAL IN |
| Bearing Type | BEARING ROLLER |
| Unable to Decode | UNABLE TO DECODE |
| Hole Location | EIGHT ON PULLEY SURFACE;6 ON HUB |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 2.937 INCHES NOMINAL IN |
| 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 |
|---|---|
| D-405252 PRIMARY | Palfinger Marine Usa, Llc (USA) |
NSN 3020-01-256-0780 is a Pulley,groove, manufactured by Palfinger Marine Usa, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-256-0780 has 1 manufacturer part number on file: D-405252 (Palfinger Marine Usa, Llc).
Key specifications for D-405252: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 5.000 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Bearing Quantity: 2. 30 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.