The Shaft,shouldered, cataloged under National Stock Number 3040-01-252-0732, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is M Rosenblatt & Son Inc. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-252-0732 |
| Primary Part Number | 5210311 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | M Rosenblatt & Son Inc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 9 |
| First End Diameter | 2.2511 INCHES NOMINAL IN |
| Second End Diameter | 2.4997 INCHES NOMINAL IN |
| Largest Step Diameter | 3.500 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Keyway Width | 0.6260 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.284 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.3567 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL COMP 4340 |
| External Keyway Length | 3.000 INCHES NOMINAL SECOND END IN |
| External Keyway Length | 2.185 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.5010 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 |
NSN 3040-01-252-0732 is a Shaft,shouldered, manufactured by M Rosenblatt & Son Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-252-0732 has 2 manufacturer part numbers on file: 5210311 (Naval Sea Systems Command), 5210311 (M Rosenblatt & Son Inc).
Key specifications for 5210311: Surface Finish: 63.0 MICROINCHES; Step Quantity: 9; First End Diameter: 2.2511 INCHES NOMINAL IN; Second End Diameter: 2.4997 INCHES NOMINAL IN. 16 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.