The Gearshaft,bevel, cataloged under National Stock Number 3040-01-268-9954, 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 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-268-9954 |
| Primary Part Number | 7-211320021-9 |
| Item Name | Gearshaft,bevel |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Shaft Largest Diameter | 2.780 INCHES NOMINAL IN |
| Shaft End Size | 1.336 INCHES AND 2.248 INCHES IN |
| Teeth Quantity | 31 |
| Pitch Angle | 25.1667 DEGREES |
| Tooth Direction | LEFT |
| Diametral Pitch | 8.538 |
| Precision Classification | QUALITY NUMBER 12 |
| Teeth Type | SPIRAL |
| Gear Outside Diameter | 3.840 INCHES MINIMUM AND 3.850 INCHES MAXIMUM IN |
| Longer Shaft Segment Length | 4.755 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Shaft Length | 8.070 INCHES NOMINAL IN |
| Shaft End Type | PLAIN AND SPLINED INVOLUTE, INTERNAL |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 7-211320021-9 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-211320021-9 | 5/9 Secondary reference Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc |
| 7-211320021-9 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 7-211320021 | D/9 Drawing number reference only Mcdonnell Douglas Helicopter Co Inc |
| 7-211320021-9 | 5/9 Secondary reference Heligear Acquisition Co. Dba Northstar Aerospace, Inc. |
NSN 3040-01-268-9954 is a Gearshaft,bevel, manufactured by The Boeing Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-268-9954 has 1 manufacturer part number on file: 7-211320021-9 (The Boeing Company).
Key specifications for 7-211320021-9: Shaft Type: SHOULDERED; Shaft Material: STEEL; Shaft Largest Diameter: 2.780 INCHES NOMINAL IN; Shaft End Size: 1.336 INCHES AND 2.248 INCHES IN. 17 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 3040-01-268-9954 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.