The Pulley,flat, cataloged under National Stock Number 3020-01-341-2477, 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 Oshkosh Defense Llc. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-341-2477 |
| Primary Part Number | 2DR555 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 2DR555 PRIMARY | Oshkosh Defense Llc (USA) |
| 5333477 PRIMARY | Cummins Inc. (USA) |
| 8009298A00 | Mbda France (FRA) |
| 3978022 | Royston Limited (GBR) |
| 3934818 | Raytheon Australia Pty Ltd 1 Technology Place (AUS) |
| Reference | Meaning |
|---|---|
| 771721012501 | 5/9 Secondary reference Ncb Hungary (honvedsegi Egyseges Termekkod) |
| 3934818 | 5/9 Secondary reference Cummins Inc. |
| 3020PL1320935 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 3802287 | 5/9 Secondary reference The Entwistle Company Llc |
| 3914086 | 5/9 Secondary reference Cummins Inc. |
| 3937553 | 5/9 Secondary reference Cummins Inc. |
| 392290000 | 5/9 Secondary reference Cummins Inc. |
| 3922900 | 5/9 Secondary reference Cummins Inc. |
| 3934818 | 5/9 Secondary reference Cummins Diesel |
| 2DR555 | 5/9 Secondary reference Oshkosh Corp |
| 3936201 | 5/9 Secondary reference Cummins Inc. |
| 3934818 | 5/9 Secondary reference Cummins Ltd |
| 3917485 | C/1 Advisory reference — outside the item-of-supply concept Cummins Inc. |
| 3978022 | 3/9 Design control — primary reference Cummins Inc. |
| 3020PL1786081 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 3020-01-341-2477 is a Pulley,flat, manufactured by Oshkosh Defense Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-341-2477 has 5 manufacturer part numbers on file: 2DR555 (Oshkosh Defense Llc), 5333477 (Cummins Inc.), 8009298A00 (Mbda France), 3978022 (Royston Limited), 3934818 (Raytheon Australia Pty Ltd 1 Technology Place).
1 possible match (shared part number, not a government interchangeability claim): 2920-01-420-7894. Verify interchangeability with system specifications before substitution.
Key specifications for 2DR555: End Item Identification: 3895-01-331-8560; 2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR); 3990-01-444-5196 CEMENT MIXER. 0 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.