The Shaft,shouldered, cataloged under National Stock Number 3040-01-399-6284, 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 Div Defense. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-399-6284 |
| Primary Part Number | 74D291033-2027 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Step Quantity | 5 |
| First End Diameter | 0.9890 INCHES MINIMUM AND 0.9920 INCHES MAXIMUM IN |
| Second End Diameter | 1.9890 INCHES MINIMUM AND 1.9920 INCHES MAXIMUM IN |
| Largest Step Diameter | 4.500 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Material Document and Classification | QQ-C-530,COND HT FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.235 INCHES NOMINAL IN |
| First End Groove Diameter | 0.5570 INCHES MINIMUM AND 0.5670 INCHES MAXIMUM IN |
| Second End Style | INTERNAL THREADED |
| Material | COPPER ALLOY |
| First End Groove Width | 0.4330 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN |
| Second End Internal Thread Length | 2.600 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 |
|---|---|
| 74D291033-2027 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 74D291033 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 3040-01-399-6284 is a Shaft,shouldered, manufactured by The Boeing Company Div Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-399-6284 has 1 manufacturer part number on file: 74D291033-2027 (The Boeing Company Div Defense).
Key specifications for 74D291033-2027: Step Quantity: 5; First End Diameter: 0.9890 INCHES MINIMUM AND 0.9920 INCHES MAXIMUM IN; Second End Diameter: 1.9890 INCHES MINIMUM AND 1.9920 INCHES MAXIMUM IN; Largest Step Diameter: 4.500 INCHES NOMINAL IN. 13 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 3040-01-399-6284 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.