The Shaft,shouldered, cataloged under National Stock Number 3040-01-282-8534, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-282-8534 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First End Pitch Diameter | 0.9375 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 1.1250 INCHES NOMINAL IN |
| First End Spline Major Diameter | 1.0000 INCHES NOMINAL IN |
| Second End Diameter | 0.9842 INCHES MINIMUM AND 0.9846 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.125 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Second End Keyway Width | 0.1870 INCHES NOMINAL IN |
| Material Document and Classification | AISI 1042 ASSN STD SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.9230 INCHES MINIMUM AND 0.9290 INCHES MAXIMUM IN |
| First End Pressure Angle | 30.0 DEGREES NOMINAL |
| First End Spline Length | 1.500 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.101 INCHES NOMINAL IN |
| First End Spline Quantity | 15 |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0460 INCHES MINIMUM AND 0.0490 INCHES MAXIMUM IN |
| Second End Distance From End to Groove | 0.109 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND FLAT KEYWAY |
| First End Spline Minor Diameter | 0.8125 INCHES NOMINAL IN |
| Material | STEEL COMP 1042 |
| External Keyway Length | 1.280 INCHES NOMINAL SECOND END 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 |
|---|---|
| CB57-43303-1 | 3/9 Design control — primary reference U.S. Government activity |
| CB57-43303 | D/9 Drawing number reference only U.S. Government activity |
| CB57-42185 ITEM 8 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-01-282-8534 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-282-8534: First End Pitch Diameter: 0.9375 INCHES NOMINAL IN; Step Quantity: 3; First End Diameter: 1.1250 INCHES NOMINAL IN; First End Spline Major Diameter: 1.0000 INCHES NOMINAL IN. 21 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.