The Shaft,shouldered, cataloged under National Stock Number 3040-01-280-4123, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Mcelroy Marine Machinery. Government technical data includes 14 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 | 3040-01-280-4123 |
| Primary Part Number | C-1282-85-41 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Mcelroy Marine Machinery |
| Status | ACTIVE |
| Step Quantity | 6 |
| First End Diameter | 2.1148 INCHES NOMINAL IN |
| Second End Diameter | 2.9900 INCHES NOMINAL IN |
| Largest Step Diameter | 4.500 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Keyway Width | 0.7500 INCHES NOMINAL IN |
| First End Keyway Depth | 0.655 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.750 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL COMP 1045 |
| External Keyway Length | 3.500 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 3.500 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.6550 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 |
|---|---|
| C-1282-85-41 PRIMARY | Mcelroy Marine Machinery (USA) |
NSN 3040-01-280-4123 is a Shaft,shouldered, manufactured by Mcelroy Marine Machinery, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-280-4123 has 1 manufacturer part number on file: C-1282-85-41 (Mcelroy Marine Machinery).
Key specifications for C-1282-85-41: Step Quantity: 6; First End Diameter: 2.1148 INCHES NOMINAL IN; Second End Diameter: 2.9900 INCHES NOMINAL IN; Largest Step Diameter: 4.500 INCHES NOMINAL IN. 14 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.