The Shaft,shouldered, cataloged under National Stock Number 3040-01-375-3664, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Carlisle & Finch Co. 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. 2 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 | 3040-01-375-3664 |
| Primary Part Number | 5579 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Carlisle & Finch Co |
| Status | ACTIVE |
| Step Quantity | 6 |
| First End Diameter | 0.6200 INCHES NOMINAL IN |
| Second End Diameter | 0.4980 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.7500 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.1250 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.1300 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL COMP 303 |
| External Keyway Length | 0.7500 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 |
|---|---|
| 5579 PRIMARY | Carlisle & Finch Co (USA) |
NSN 3040-01-375-3664 is a Shaft,shouldered, manufactured by Carlisle & Finch Co, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-375-3664 has 1 manufacturer part number on file: 5579 (Carlisle & Finch Co).
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-418-6124, 5995-01-655-3962. Verify interchangeability with system specifications before substitution.
Key specifications for 5579: Step Quantity: 6; First End Diameter: 0.6200 INCHES NOMINAL IN; Second End Diameter: 0.4980 INCHES MAXIMUM IN; Largest Step Diameter: 0.7500 INCHES MAXIMUM 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.