The Shaft,straight, cataloged under National Stock Number 3040-01-512-5172, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-512-5172 |
| Primary Part Number | 167-6985304-06 |
| 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 Diameter | 0.8720 INCHES MINIMUM AND 0.8730 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 0.8800 INCHES NOMINAL IN |
| Second End Diameter | 0.8720 INCHES MINIMUM AND 0.8730 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 0.7370 INCHES MINIMUM AND 0.7470 INCHES MAXIMUM IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Spline Major Diameter | 0.8800 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-286, FORM 2 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| First End Spline Length | 2.3700 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | IDENTICAL |
| Second End Spline Quantity | 10 |
| Second End Style | SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 0.7270 INCHES MINIMUM AND 0.7320 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY 502 |
| Second End Spline Length | 3.2500 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 |
|---|---|
| 167-6985304-06 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6985304 | D/9 Drawing number reference only Naval Sea Systems Command |
| H541-0298-06 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-512-5172 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-512-5172 has 1 manufacturer part number on file: 167-6985304-06 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-512-5200. Verify interchangeability with system specifications before substitution.
Key specifications for 167-6985304-06: Surface Finish: 125.0 MICROINCHES; First End Diameter: 0.8720 INCHES MINIMUM AND 0.8730 INCHES MAXIMUM IN; First End Spline Major Diameter: 0.8800 INCHES NOMINAL IN; Second End Diameter: 0.8720 INCHES MINIMUM AND 0.8730 INCHES MAXIMUM 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.