The Shaft,shouldered, cataloged under National Stock Number 3040-01-423-4358, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Comsaco, Llc Dba Comsaco Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-423-4358 |
| Primary Part Number | 74031-46 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Comsaco, Llc Dba Comsaco Inc |
| Status | ACTIVE |
| Step Quantity | 2 |
| First End Diameter | 0.5000 INCHES NOMINAL IN |
| Second End Diameter | 0.2500 INCHES NOMINAL IN |
| Largest Step Diameter | 0.500 INCHES NOMINAL IN |
| First End Style | SLOTTED |
| End Similarity | NOT IDENTICAL |
| Second End Style | THREADED CROSS DRILLED (THRU HOLE) |
| Material | STEEL |
| 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 |
|---|---|
| 404-602NM ITEM NO. 9 | Comsaco, Llc Dba Comsaco Inc (USA) |
| 74031-46 PRIMARY | Comsaco, Llc Dba Comsaco Inc (USA) |
| Reference | Meaning |
|---|---|
| 404-602NM | D/9 Drawing number reference only Comsaco, Llc Dba Comsaco Inc |
NSN 3040-01-423-4358 is a Shaft,shouldered, manufactured by Comsaco, Llc Dba Comsaco Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-423-4358 has 2 manufacturer part numbers on file: 404-602NM ITEM NO. 9 (Comsaco, Llc Dba Comsaco Inc), 74031-46 (Comsaco, Llc Dba Comsaco Inc).
Key specifications for 74031-46: Step Quantity: 2; First End Diameter: 0.5000 INCHES NOMINAL IN; Second End Diameter: 0.2500 INCHES NOMINAL IN; Largest Step Diameter: 0.500 INCHES NOMINAL IN. 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.