The Shaft,shouldered, cataloged under National Stock Number 3040-01-346-1759, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-346-1759 |
| Primary Part Number | 5545998 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 1.5000 INCHES NOMINAL IN |
| Second End Diameter | 0.7000 INCHES NOMINAL IN |
| Largest Step Diameter | 1.5746 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Material Document and Classification | AISI 4340 ASSN STD SINGLE MATERIAL RESPONSE |
| First End Pressure Angle | 30.0 DEGREES NOMINAL |
| First End Spline Length | 1.7500 INCHES NOMINAL IN |
| First End Spline Quantity | 18 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 14 |
| Second End Pressure Angle | 30.0 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL COMP 4340 |
| Second End Spline Length | 1.4000 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 | S |
| Part Number | Manufacturer |
|---|---|
| 5545998 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-346-1759 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-346-1759 has 1 manufacturer part number on file: 5545998 (Naval Sea Systems Command).
Key specifications for 5545998: First End Diameter: 1.5000 INCHES NOMINAL IN; Second End Diameter: 0.7000 INCHES NOMINAL IN; Largest Step Diameter: 1.5746 INCHES NOMINAL IN; First End Style: SPLINED (INVOLUTE). 14 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.