The Shaft,straight, cataloged under National Stock Number 3040-00-109-9645, 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12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-109-9645 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| First End Diameter | 0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Groove Diameter | 0.0950 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.063 INCHES NOMINAL IN |
| Second End Groove Width | 0.0180 INCHES MINIMUM AND 0.0200 INCHES MAXIMUM IN |
| Second End Distance From End to Groove | 0.095 INCHES NOMINAL IN |
| First End Groove Diameter | 0.0950 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM IN |
| Second End Style | CIRCULAR GROOVED |
| Material | STEEL CORROSION RESISTING |
| First End Groove Width | 0.0180 INCHES MINIMUM AND 0.0200 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 |
|---|---|
| 228880 | 5/9 Secondary reference Tally Printer Corporation |
| 304380 | 3/9 Design control — primary reference Tally Printer Corporation |
NSN 3040-00-109-9645 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 2540-00-753-8698, 3120-01-186-7618, 6540-01-610-9792. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-109-9645: Surface Finish: 63.0 MICROINCHES; First End Diameter: 0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN; First End Style: PLAIN; Overall Length: 0.938 INCHES NOMINAL IN. 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.