The Gearshaft,helical, cataloged under National Stock Number 3040-00-333-3528, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-00-333-3528 |
| Primary Part Number | 7971913 |
| Item Name | Gearshaft,helical |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shaft Type | STRAIGHT |
| Shaft Material | STEEL |
| Shaft Diameter | 3.750 INCHES NOMINAL IN |
| Teeth Quantity | 33 |
| Tooth Direction | RIGHT |
| Teeth Type | SINGLE HELIX |
| Gear Material | STEEL |
| Shaft End Type | SPLINED STRAIGHT AND PLAIN |
| Gear Location on Shaft | MIDPOINT BETWEEN ENDS OF SHAFT |
| Face Width | 2.056 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 |
|---|---|
| 7971913 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 741KBA1120 | 5/9 Secondary reference Mack Trucks Inc Parts Opn |
| 741KB1120BP1 | 5/9 Secondary reference Mack Trucks Inc |
NSN 3040-00-333-3528 is a Gearshaft,helical, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-333-3528 has 1 manufacturer part number on file: 7971913 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7971913: Shaft Type: STRAIGHT; Shaft Material: STEEL; Shaft Diameter: 3.750 INCHES NOMINAL IN; Teeth Quantity: 33. 10 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.