The Shaft,shouldered, cataloged under National Stock Number 3040-01-338-4431, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Oshkosh Defense Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 — Miscellaneous Power Transmission Equipment (FSG 30) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); R. H. Sheppard Co., Inc. Dba Sheppard (CAGE 78222) |
| Parameter | Value |
|---|---|
| NSN | 3040-01-338-4431 |
| Primary Part Number | 2GK581 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| 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 |
|---|---|
| 2GK581 PRIMARY | Oshkosh Defense Llc (USA) |
| 1855783 PRIMARY | R. H. Sheppard Co., Inc. Dba Sheppard (USA) |
| Reference | Meaning |
|---|---|
| 1856294 | D/9 Drawing number reference only R. H. Sheppard Co., Inc. Dba Sheppard |
| 2GK581 | 5/9 Secondary reference Oshkosh Corp |
NSN 3040-01-338-4431 is a Shaft,shouldered, manufactured by Oshkosh Defense Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-338-4431 has 2 manufacturer part numbers on file: 2GK581 (Oshkosh Defense Llc), 1855783 (R. H. Sheppard Co., Inc. Dba Sheppard).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-338-4432, 2920-01-436-2814. Verify interchangeability with system specifications before substitution.
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.