The Shaft,shouldered, cataloged under National Stock Number 3040-01-185-9512, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Western Design. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-185-9512 |
| Primary Part Number | 014218-1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Step Quantity | 11 |
| First End Diameter | 0.5000 INCHES NOMINAL IN |
| Largest Step Diameter | 0.6233 INCHES MINIMUM AND 0.6243 INCHES MAXIMUM IN |
| First End External Thread Length | 0.380 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| Material Document and Classification | AMS 5643,COND H1150 ASSN STD SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| First End Distance From End to Groove | 0.380 INCHES NOMINAL IN |
| First End Groove Diameter | 0.5050 INCHES MINIMUM AND 0.5150 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING |
| First End Groove Width | 0.1200 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 014218-1 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Western Design (USA) |
| HM025-681-1 | Robertson Fuel Systems, L.l.c. (USA) |
| Reference | Meaning |
|---|---|
| HM025-681 | 5/9 Secondary reference Robertson Fuel Systems, L.l.c. |
| 014218-1 | C/1 Advisory reference — outside the item-of-supply concept Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| 014218 | D/9 Drawing number reference only Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
NSN 3040-01-185-9512 is a Shaft,shouldered, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Western Design, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-185-9512 has 2 manufacturer part numbers on file: 014218-1 (Meggitt Defense Systems, Inc. Dba Meggitt Western Design), HM025-681-1 (Robertson Fuel Systems, L.l.c.).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-510-7518. Verify interchangeability with system specifications before substitution.
Key specifications for 014218-1: Surface Finish: 125.0 MICROINCHES; Step Quantity: 11; First End Diameter: 0.5000 INCHES NOMINAL IN; Largest Step Diameter: 0.6233 INCHES MINIMUM AND 0.6243 INCHES MAXIMUM IN. 12 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 3040-01-185-9512 has DEMIL Code D. 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.