The Extension Shaft, cataloged under National Stock Number 3040-01-337-5058, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-337-5058 |
| Item Name | Extension Shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Socket Diameter | 0.415 INCHES NOMINAL IN |
| Length | 2.375 INCHES NOMINAL IN |
| Socket Depth | 1.000 INCHES NOMINAL IN |
| Style Designator | PLAIN SOCKET |
| Outside Diameter | 0.560 INCHES NOMINAL IN |
| Shaft End Design | FEMALE |
| Shaft End Diameter | 0.435 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Shoulder Length | 1.095 INCHES NOMINAL IN |
| End Type | PROCESSED END |
| Shaft End Configuration | ROUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 510-17315-1 | 3/2 Design control — primary reference U.S. Government activity |
| 510-17315 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-337-5058 is a Extension Shaft, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-338-1027. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-337-5058: Socket Diameter: 0.415 INCHES NOMINAL IN; Length: 2.375 INCHES NOMINAL IN; Socket Depth: 1.000 INCHES NOMINAL IN; Style Designator: PLAIN SOCKET. 11 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.