The Shaft,shouldered, cataloged under National Stock Number 3040-01-185-4373, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Aljers Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-185-4373 |
| Primary Part Number | X70175-A |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Aljers Llc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 19 |
| First End Diameter | 0.5312 INCHES NOMINAL IN |
| Largest Step Diameter | 2.744 INCHES NOMINAL IN |
| First End Style | THREADED CROSS DRILLED (THRU HOLE) |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| Material | NICKEL ALLOY |
| First End Distance From Hole Center to End | 0.188 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 |
|---|---|
| X70175-A PRIMARY | Aljers Llc (USA) |
| Reference | Meaning |
|---|---|
| X70175-A | 5/9 Secondary reference U.S. Government activity |
| D-75-944-37 | D/9 Drawing number reference only U.S. Government activity |
| D-75-944-37 PIECE 1 | 5/9 Secondary reference U.S. Government activity |
| B-70175-A | 3/9 Design control — primary reference U.S. Government activity |
NSN 3040-01-185-4373 is a Shaft,shouldered, manufactured by Aljers Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-185-4373 has 1 manufacturer part number on file: X70175-A (Aljers Llc).
Key specifications for X70175-A: Surface Finish: 32.0 MICROINCHES; Step Quantity: 19; First End Diameter: 0.5312 INCHES NOMINAL IN; Largest Step Diameter: 2.744 INCHES NOMINAL IN. 9 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.