The Shaft,shouldered, cataloged under National Stock Number 3040-01-017-1725, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 21 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. 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 | 3040-01-017-1725 |
| Primary Part Number | 12000542 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| First End Pitch Diameter | 0.5625 INCHES NOMINAL IN |
| Step Quantity | 10 |
| First End Diameter | 0.5940 INCHES NOMINAL IN |
| First End Spline Major Diameter | 0.5940 INCHES NOMINAL IN |
| Second End Diameter | 0.7810 INCHES NOMINAL IN |
| Largest Step Diameter | 1.2500 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 0.7655 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Second End Spline Major Diameter | 0.7810 INCHES NOMINAL IN |
| Material Document and Classification | ASTM-A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM-A321 ASSN STD SINGLE MATERIAL RESPONSE |
| First End Pressure Angle | 30.0 DEGREES NOMINAL |
| First End Spline Length | 0.4850 INCHES NOMINAL IN |
| First End Spline Quantity | 18 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 24 |
| Second End Pressure Angle | 30.0 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| First End Spline Minor Diameter | 0.5782 INCHES NOMINAL IN |
| Material | STEEL COMP 4140 OR STEEL COMP 8640 |
| Second End Pitch Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Spline Length | 0.9200 INCHES NOMINAL IN |
| 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 |
|---|---|
| 12000542 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
NSN 3040-01-017-1725 is a Shaft,shouldered, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-017-1725 has 1 manufacturer part number on file: 12000542 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-230-2156. Verify interchangeability with system specifications before substitution.
Key specifications for 12000542: First End Pitch Diameter: 0.5625 INCHES NOMINAL IN; Step Quantity: 10; First End Diameter: 0.5940 INCHES NOMINAL IN; First End Spline Major Diameter: 0.5940 INCHES NOMINAL IN. 21 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.