The Gearshaft,bevel, cataloged under National Stock Number 3040-00-083-4451, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Heligear Acquisition Co. Dba Northstar Aerospace, Inc.. 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 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 | 3040-00-083-4451 |
| Primary Part Number | 584123 |
| Item Name | Gearshaft,bevel |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Shaft Largest Diameter | 0.870 INCHES NOMINAL IN |
| Shaft End Size | 0.668 INCHES IN |
| Teeth Quantity | 19 |
| Pitch Angle | 45.0000 DEGREES |
| Teeth Type | STRAIGHT |
| Gear Outside Diameter | 1.453 INCHES MINIMUM AND 1.458 INCHES MAXIMUM IN |
| Longer Shaft Segment Length | 2.503 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Shaft Length | 3.750 INCHES NOMINAL IN |
| Shaft End Type | SPLINED INVOLUTE, INTERNAL |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 0.310 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 584123 PRIMARY | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. (USA) |
NSN 3040-00-083-4451 is a Gearshaft,bevel, manufactured by Heligear Acquisition Co. Dba Northstar Aerospace, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-083-4451 has 1 manufacturer part number on file: 584123 (Heligear Acquisition Co. Dba Northstar Aerospace, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2840-00-841-6466. Verify interchangeability with system specifications before substitution.
Key specifications for 584123: Shaft Type: SHOULDERED; Shaft Material: STEEL; Shaft Largest Diameter: 0.870 INCHES NOMINAL IN; Shaft End Size: 0.668 INCHES 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 3040-00-083-4451 has DEMIL Code B. 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.