The Shaft,shouldered, cataloged under National Stock Number 3040-01-204-9580, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 3 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 | 3040-01-204-9580 |
| Primary Part Number | 12598 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| First End Style | PLAIN |
| End Similarity | NOT IDENTICAL |
| Second End Style | CIRCULAR GROOVED |
| 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 |
|---|---|
| 12598 PRIMARY | Grimes Aerospace Company (USA) |
NSN 3040-01-204-9580 is a Shaft,shouldered, manufactured by Grimes Aerospace Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-204-9580 has 1 manufacturer part number on file: 12598 (Grimes Aerospace Company).
2 possible matches (shared part number, not a government interchangeability claim): 3230-01-387-0785, 6550-01-575-2206. Verify interchangeability with system specifications before substitution.
Key specifications for 12598: First End Style: PLAIN; End Similarity: NOT IDENTICAL; Second End Style: CIRCULAR GROOVED; End Item Identification: 6220-00-061-4140. 3 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.