The Shaft,straight, cataloged under National Stock Number 3040-01-112-8531, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Atap Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-112-8531 |
| Primary Part Number | 444951 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Atap Inc |
| Status | ACTIVE |
| Second End Hole Diameter | 0.1250 INCHES NOMINAL IN |
| First End Diameter | 0.8750 INCHES NOMINAL IN |
| Second End Diameter | 0.8750 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Distance From Hole Center to End | 0.156 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | UNTHREADED CROSS DRILLED |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 444951 PRIMARY | Atap Inc (USA) |
| Reference | Meaning |
|---|---|
| 444951 | 5/9 Secondary reference Syltone Industries Llc Dba Gardner Denver Inc. Div Emco Wheaton |
| 2DY306 | 5/9 Secondary reference Oshkosh Corp |
NSN 3040-01-112-8531 is a Shaft,straight, manufactured by Atap Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-112-8531 has 1 manufacturer part number on file: 444951 (Atap Inc).
2 possible matches (shared part number, not a government interchangeability claim): 9905-01-502-3810, 5340-01-619-2820. Verify interchangeability with system specifications before substitution.
Key specifications for 444951: Second End Hole Diameter: 0.1250 INCHES NOMINAL IN; First End Diameter: 0.8750 INCHES NOMINAL IN; Second End Diameter: 0.8750 INCHES NOMINAL IN; First End Style: PLAIN. 8 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.