The Shaft,straight, cataloged under National Stock Number 3040-01-203-5457, 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 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-203-5457 |
| Primary Part Number | SSN637-515-2143590 PIECE 26 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| First End Diameter | 1.7470 INCHES NOMINAL IN |
| First End Spline Major Diameter | 1.7470 INCHES NOMINAL IN |
| Second End Diameter | 1.7470 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 1.5825 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Spline Major Diameter | 1.7470 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-286 CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| First End Spline Length | 1.563 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 10 |
| Second End Style | SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 1.5825 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Second End Spline Length | 2.313 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 |
|---|---|
| SSN637-515-2143590 PIECE 26 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| SSN637-515-2143590 | D/9 Drawing number reference only Naval Sea Systems Command |
| 77552-06X11 | D/9 Drawing number reference only U.S. Government activity |
| 77552-06X11 PIECE 26 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-203-5457 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-203-5457 has 1 manufacturer part number on file: SSN637-515-2143590 PIECE 26 (Naval Sea Systems Command).
Key specifications for SSN637-515-2143590 PIECE 26: Surface Finish: 63.0 MICROINCHES; First End Diameter: 1.7470 INCHES NOMINAL IN; First End Spline Major Diameter: 1.7470 INCHES NOMINAL IN; Second End Diameter: 1.7470 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.