The Shaft,shouldered, cataloged under National Stock Number 3040-00-503-1081, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Insinger Machine Co. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-503-1081 |
| Primary Part Number | SUP4 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Insinger Machine Co |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 0.8750 INCHES NOMINAL IN |
| Second End Diameter | 0.7500 INCHES NOMINAL IN |
| Largest Step Diameter | 1.125 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 0.594 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Keyway Width | 0.1250 INCHES NOMINAL IN |
| First End Keyway Depth | 0.105 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | WOODRUFF KEYWAY AND INTERNALLY THREADED |
| Material | STEEL CORROSION RESISTING |
| Second End Internal Thread Length | 0.609 INCHES NOMINAL IN |
| External Keyway Length | 0.625 INCHES NOMINAL SECOND END IN |
| External Keyway Length | 1.000 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1875 INCHES NOMINAL IN |
| 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 |
|---|---|
| SUP4 PRIMARY | Insinger Machine Co (USA) |
NSN 3040-00-503-1081 is a Shaft,shouldered, manufactured by Insinger Machine Co, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-503-1081 has 1 manufacturer part number on file: SUP4 (Insinger Machine Co).
Key specifications for SUP4: Step Quantity: 4; First End Diameter: 0.8750 INCHES NOMINAL IN; Second End Diameter: 0.7500 INCHES NOMINAL IN; Largest Step Diameter: 1.125 INCHES NOMINAL IN. 15 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.