The Shaft,shouldered, cataloged under National Stock Number 3040-00-337-1900, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-337-1900 |
| Primary Part Number | B3157598 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Hole Diameter | 0.1200 INCHES NOMINAL IN |
| Second End External Thread Length | 0.500 INCHES NOMINAL IN |
| Step Quantity | 7 |
| First End Diameter | 2.3600 INCHES NOMINAL IN |
| Second End Diameter | 0.5000 INCHES NOMINAL IN |
| Largest Step Diameter | 2.360 INCHES NOMINAL IN |
| First End Slot Width | 0.812 INCHES NOMINAL IN |
| First End Style | SLOTTED |
| Second End Distance From Hole Center to End | 0.125 INCHES NOMINAL IN |
| Second End Hole Depth | 0.500 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Slot Depth | 0.750 INCHES NOMINAL IN |
| Second End Style | CROSS DRILLED AND EXTERNALLY THREADED |
| 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 |
|---|---|
| B3157598 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| CADH9388A | 3/9 Design control — primary reference U.S. Government activity |
| ADH9388A | 5/9 Secondary reference U.S. Government activity |
| CADH9388A | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
| B3157598 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-00-337-1900 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-337-1900 has 1 manufacturer part number on file: B3157598 (Naval Sea Systems Command).
Key specifications for B3157598: Second End Hole Diameter: 0.1200 INCHES NOMINAL IN; Second End External Thread Length: 0.500 INCHES NOMINAL IN; Step Quantity: 7; First End Diameter: 2.3600 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.