The Shaft,straight, cataloged under National Stock Number 3040-01-413-8891, 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 10 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-413-8891 |
| Primary Part Number | 512-6404653-60 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| First End Pitch Diameter | 0.9250 INCHES NOMINAL IN |
| First End Diameter | 0.9950 INCHES MINIMUM AND 0.9960 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 0.9960 INCHES MAXIMUM IN |
| First End Style | SPLINED (INVOLUTE) |
| First End Spline Length | 1.500 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | IDENTICAL |
| First End Spline Minor Diameter | 0.8500 INCHES MINIMUM AND 0.8550 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY K-500 |
| 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 |
|---|---|
| 512-6404653-60 PRIMARY | Naval Sea Systems Command (USA) |
| 512-64046653 FIND NO 60 | Naval Sea Systems Command (USA) |
| 512-6404652 FIND NO 49 | Naval Sea Systems Command (USA) |
| 512-6404652-49 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6404652 | D/9 Drawing number reference only Naval Sea Systems Command |
| 6404653 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-413-8891 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-413-8891 has 4 manufacturer part numbers on file: 512-6404653-60 (Naval Sea Systems Command), 512-64046653 FIND NO 60 (Naval Sea Systems Command), 512-6404652 FIND NO 49 (Naval Sea Systems Command), 512-6404652-49 (Naval Sea Systems Command).
8 possible matches (shared part number, not a government interchangeability claim): 3040-01-418-0064, 3040-01-418-4103, 4820-01-418-6448. Verify interchangeability with system specifications before substitution.
Key specifications for 512-6404653-60: Surface Finish: 125.0 MICROINCHES; First End Pitch Diameter: 0.9250 INCHES NOMINAL IN; First End Diameter: 0.9950 INCHES MINIMUM AND 0.9960 INCHES MAXIMUM IN; First End Spline Major Diameter: 0.9960 INCHES MAXIMUM IN. 10 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.