The Pulley,groove, cataloged under National Stock Number 3020-01-325-8617, 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 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-325-8617 |
| Primary Part Number | A-1509ITEM4 |
| 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 |
| Bore Feature | NOT INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Design Form | PLAIN |
| Groove Shape | U |
| Outside Diameter | 53.0 MILLIMETERS NOMINAL MM |
| Style Designator | PLAIN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Counterbore Feature | NOT INCLUDED |
| Material | STEEL OVERALL |
| Face Width | 16.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| A-1509ITEM4 | Palfinger Marine Usa, Llc (USA) |
| Reference | Meaning |
|---|---|
| A-1508 | C/1 Advisory reference — outside the item-of-supply concept Palfinger Marine Usa, Llc |
| A-1509ITEM4 | 5/9 Secondary reference U.S. Government activity |
| A-1508 | 3/9 Design control — primary reference U.S. Government activity |
| A-1509 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-325-8617 is a Pulley,groove, manufactured by Palfinger Marine Usa, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-325-8617 has 1 manufacturer part number on file: A-1509ITEM4 (Palfinger Marine Usa, Llc).
4 possible matches (shared part number, not a government interchangeability claim): 8455-01-528-8469, 8455-01-528-9404, 5915-01-597-8403. Verify interchangeability with system specifications before substitution.
Key specifications for A-1509ITEM4: 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.