The Shaft,shouldered, cataloged under National Stock Number 3040-01-181-9800, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-181-9800 |
| Primary Part Number | 42000A |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S |
| Status | ACTIVE |
| Step Quantity | 6 |
| First End Diameter | 0.5580 INCHES MINIMUM AND 0.5600 INCHES MAXIMUM IN |
| Second End Diameter | 0.4970 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.900 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-A-225 FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | PLAIN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 42000A PRIMARY | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA) |
NSN 3040-01-181-9800 is a Shaft,shouldered, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-181-9800 has 1 manufacturer part number on file: 42000A (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).
Key specifications for 42000A: Step Quantity: 6; First End Diameter: 0.5580 INCHES MINIMUM AND 0.5600 INCHES MAXIMUM IN; Second End Diameter: 0.4970 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Largest Step Diameter: 0.900 INCHES MINIMUM AND 0.920 INCHES MAXIMUM 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.