The Shaft,straight, cataloged under National Stock Number 3040-00-007-4757, 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12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-007-4757 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| First End Diameter | 0.1872 INCHES NOMINAL IN |
| Second End Diameter | 0.1872 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Groove Diameter | 0.1490 INCHES NOMINAL IN |
| Second End Slot Depth | 0.060 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Slot Width | 0.060 INCHES NOMINAL IN |
| Second End Groove Width | 0.0290 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.954 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND SLOTTED |
| Material | STEEL |
| 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 |
|---|---|
| 74832-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-007-4757 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): 3110-01-076-5018, 1680-01-602-3218. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-007-4757: Surface Finish: 63.0 MICROINCHES; First End Diameter: 0.1872 INCHES NOMINAL IN; Second End Diameter: 0.1872 INCHES NOMINAL IN; First End Style: PLAIN. 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.