The Gearshaft,helical, cataloged under National Stock Number 3040-01-073-7682, 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 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-073-7682 |
| Primary Part Number | 12284919 |
| 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 Material | STEEL |
| Gear Material | STEEL |
| 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 |
|---|---|
| 12284919 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| XM21794 | 5/9 Secondary reference General Dynamics Land Systems Inc. |
| 12274719 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 3040-01-073-7682 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 3040-01-073-7682 has 1 manufacturer part number on file: 12284919 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12284919: Shaft Material: STEEL; Overall Length: 4.690 INCHES MINIMUM AND 4.720 INCHES MAXIMUM IN; Gear Material: STEEL; Special Features: ONE EXTERNAL SPLINE 74/43 DIAM PITCH W/32T,ONE INTERNAL SPLINE 32/64 DIAM PITCH W/31T;1 1/4-18 UNF 3A THD ON BOTH END A. 2 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.