The Shaft,straight, cataloged under National Stock Number 3040-01-126-0231, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-126-0231 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| First End Distance From Keyway Center to End | 0.710 INCHES NOMINAL IN |
| First End Style | INDENTED FLAT KEYWAY AND CROSS DRILLED HOLE |
| Material Document and Classification | QQ-S-763,COND B FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.106 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 304 |
| External Keyway Length | 1.180 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1880 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 709-4684880 ITEM 7 | 5/2 Secondary reference U.S. Government activity |
| 709-4684880 | D/9 Drawing number reference only U.S. Government activity |
| 87832-1609 | D/9 Drawing number reference only U.S. Government activity |
| 87832-1609 ITEM 7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-126-0231 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-126-1745, 3040-01-126-1746, 6680-01-142-5286. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-126-0231: First End Diameter: 0.7500 INCHES NOMINAL IN; First End Distance From Keyway Center to End: 0.710 INCHES NOMINAL IN; First End Style: INDENTED FLAT KEYWAY AND CROSS DRILLED HOLE; Material Document and Classification: QQ-S-763,COND B FED SPEC SINGLE MATERIAL RESPONSE. 9 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.