The Shaft,straight, cataloged under National Stock Number 3040-01-254-5572, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-254-5572 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First End Diameter | 0.2497 INCHES NOMINAL IN |
| First End Flat Depth | 0.0297 INCHES NOMINAL IN |
| Second End Diameter | 0.2497 INCHES NOMINAL IN |
| First End Style | FLATTED |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.2200 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0290 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.039 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED |
| First End Flat Length | 0.350 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 313926 | D/9 Drawing number reference only U.S. Government activity |
| 313926-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-254-5572 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3120-01-332-7937, 5935-01-334-9711. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-254-5572: First End Diameter: 0.2497 INCHES NOMINAL IN; First End Flat Depth: 0.0297 INCHES NOMINAL IN; Second End Diameter: 0.2497 INCHES NOMINAL IN; First End Style: FLATTED. 12 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.