The Shaft,shouldered, cataloged under National Stock Number 3040-00-372-3834, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-372-3834 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Step Quantity | 7 |
| First End Diameter | 1.5000 INCHES NOMINAL IN |
| First End Spline Major Diameter | 1.7480 INCHES NOMINAL IN |
| Second End Diameter | 1.7480 INCHES NOMINAL IN |
| Largest Step Diameter | 2.375 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Keyway Width | 0.3760 INCHES NOMINAL IN |
| First End Spline Length | 2.250 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.218 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAYS AND INTERNALLY THREADED |
| First End Spline Minor Diameter | 1.3100 INCHES NOMINAL IN |
| Material | STEEL COMP 4140 |
| Second End Internal Thread Length | 1.250 INCHES NOMINAL IN |
| External Keyway Length | 2.125 INCHES NOMINAL SECOND END IN |
| 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 |
|---|---|
| 053544 | 3/2 Design control — primary reference U.S. Government activity |
| 53544 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-00-372-3834 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-196-1334. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-372-3834: Step Quantity: 7; First End Diameter: 1.5000 INCHES NOMINAL IN; First End Spline Major Diameter: 1.7480 INCHES NOMINAL IN; Second End Diameter: 1.7480 INCHES NOMINAL IN. 16 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.