The Gearshaft,spur, cataloged under National Stock Number 3040-01-422-7855, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-422-7855 |
| Primary Part Number | 92007A0389 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Shaft Largest Diameter | 1.230 INCHES NOMINAL IN |
| Shaft End Size | 1.230 INCHES AND 0.781 INCHES IN |
| Teeth Quantity | 18 |
| Diametral Pitch | 10 |
| Precision Classification | QUALITY NUMBER 7 |
| Gear Outside Diameter | 1.986 INCHES NOMINAL IN |
| Longer Shaft Segment Length | 1.950 INCHES NOMINAL IN |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Gear Material | STEEL |
| Shaft End Type | HEXAGONAL AND SPLINED INVOLUTE, INTERNAL |
| Gear Location on Shaft | OFF CENTER BETWEEN ENDS OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 0.720 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 92007A0389 PRIMARY | General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 92007A0389 | 5/9 Secondary reference General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| 92007A0389 | D/9 Drawing number reference only Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
NSN 3040-01-422-7855 is a Gearshaft,spur, manufactured by General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-422-7855 has 1 manufacturer part number on file: 92007A0389 (General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc).
Key specifications for 92007A0389: Shaft Type: SHOULDERED; Shaft Material: STEEL; Shaft Largest Diameter: 1.230 INCHES NOMINAL IN; Shaft End Size: 1.230 INCHES AND 0.781 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.
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.