The Shaft,shouldered, cataloged under National Stock Number 3040-01-258-0239, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Kearfott Corp Div Kearfott Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-258-0239 |
| Primary Part Number | 32558 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Kearfott Corp Div Kearfott Corporation |
| Status | ACTIVE |
| Step Quantity | 8 |
| First End Diameter | 0.0930 INCHES NOMINAL IN |
| Second End Diameter | 0.1247 INCHES NOMINAL IN |
| Largest Step Diameter | 0.3034 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-7638 FED SPEC ALL MATERIAL RESPONSES |
| End Similarity | NOT IDENTICAL |
| Second End Style | PLAIN |
| Material | STEEL COMP 440C |
| 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 |
|---|---|
| 32558 PRIMARY | Kearfott Corp Div Kearfott Corporation (USA) |
| Reference | Meaning |
|---|---|
| 32558 | 5/9 Secondary reference Fl Aerospace Corp Janitrol Aero Div/general Design |
NSN 3040-01-258-0239 is a Shaft,shouldered, manufactured by Kearfott Corp Div Kearfott Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-258-0239 has 1 manufacturer part number on file: 32558 (Kearfott Corp Div Kearfott Corporation).
Key specifications for 32558: Step Quantity: 8; First End Diameter: 0.0930 INCHES NOMINAL IN; Second End Diameter: 0.1247 INCHES NOMINAL IN; Largest Step Diameter: 0.3034 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.