The Gearshaft,spur, cataloged under National Stock Number 3040-00-443-1013, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-443-1013 |
| Primary Part Number | 8437841 |
| Item Name | Gearshaft,spur |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Shaft Largest Diameter | 1.000 INCHES NOMINAL IN |
| Shaft End Size | 1.000 INCHES IN |
| Teeth Quantity | 25 |
| Diametral Pitch | 16 |
| Gear Outside Diameter | 1.678 INCHES NOMINAL IN |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM OVERALL |
| Gear Material | STEEL |
| Shaft End Type | CIRCULAR GROOVED |
| Gear Location on Shaft | ON END OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 0.510 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 |
|---|---|
| 8437841 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 3040004431013 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 3040004431013 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 3040-00-443-1013 is a Gearshaft,spur, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-443-1013 has 1 manufacturer part number on file: 8437841 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 8437841: Shaft Type: SHOULDERED; Shaft Material: STEEL; Shaft Largest Diameter: 1.000 INCHES NOMINAL IN; Shaft End Size: 1.000 INCHES 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 3040-00-443-1013 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.