The Shaft,shouldered, cataloged under National Stock Number 3040-00-744-1314, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.. Government technical data includes 11 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-744-1314 |
| Primary Part Number | 21598 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 4.2420 INCHES NOMINAL IN |
| Second End Diameter | 1.2490 INCHES NOMINAL IN |
| Largest Step Diameter | 6.125 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.2500 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.150 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL |
| External Keyway Length | 1.562 INCHES NOMINAL SECOND END 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 |
|---|---|
| 21598 PRIMARY | Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA) |
NSN 3040-00-744-1314 is a Shaft,shouldered, manufactured by Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-744-1314 has 1 manufacturer part number on file: 21598 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).
4 possible matches (shared part number, not a government interchangeability claim): 1650-01-326-9150, 4320-01-355-0565, 3020-01-381-2694. Verify interchangeability with system specifications before substitution.
Key specifications for 21598: Step Quantity: 4; First End Diameter: 4.2420 INCHES NOMINAL IN; Second End Diameter: 1.2490 INCHES NOMINAL IN; Largest Step Diameter: 6.125 INCHES NOMINAL IN. 11 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.