The Shaft,shouldered, cataloged under National Stock Number 3040-00-018-9608, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-018-9608 |
| Primary Part Number | A15HS020-5 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Finish | 25.0 MICROINCHES |
| Step Quantity | 4 |
| First End Diameter | 0.3750 INCHES NOMINAL IN |
| Second End Diameter | 0.6450 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.645 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 0.6138 INCHES MINIMUM AND 0.6188 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Spline Major Diameter | 0.6450 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-7393,COMP 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 12 |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL COMP 3310 |
| Second End Pitch Diameter | 0.6294 INCHES MINIMUM AND 0.6344 INCHES MAXIMUM IN |
| Second End Spline Length | 0.812 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A15HS020-5 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 5890-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-00-018-9608 is a Shaft,shouldered, manufactured by The Boeing Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-018-9608 has 1 manufacturer part number on file: A15HS020-5 (The Boeing Company).
6 possible matches (shared part number, not a government interchangeability claim): 5360-00-151-5805, 5325-00-544-1360, 5365-01-169-2492. Verify interchangeability with system specifications before substitution.
Key specifications for A15HS020-5: Surface Finish: 25.0 MICROINCHES; Step Quantity: 4; First End Diameter: 0.3750 INCHES NOMINAL IN; Second End Diameter: 0.6450 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN. 15 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.
NSN 3040-00-018-9608 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.