The Gearshaft,bevel, cataloged under National Stock Number 3040-01-070-5783, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-070-5783 |
| Primary Part Number | 12257664 |
| Item Name | Gearshaft,bevel |
| 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 COMP 4140 OR STEEL COMP 8640 |
| Shaft End Size | 0.750 INCHES IN |
| Shaft Diameter | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Teeth Quantity | 39 |
| Pitch Angle | 67.6936 DEGREES |
| Diametral Pitch | 20 |
| Teeth Type | STRAIGHT |
| Gear Outside Diameter | 1.958 INCHES MINIMUM AND 1.963 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Gear Material | STEEL COMP 4140 OR STEEL COMP 8640 |
| Shaft Length | 2.905 INCHES MINIMUM AND 2.910 INCHES MAXIMUM IN |
| Shaft End Type | ROUND GROOVED |
| Gear Location on Shaft | ON END OF SHAFT |
| Pressure Angle | 20.0000 DEGREES |
| Face Width | 0.310 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 |
|---|---|
| 12257664 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-01-070-5783 is a Gearshaft,bevel, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-070-5783 has 1 manufacturer part number on file: 12257664 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12257664: Shaft Type: STRAIGHT; Shaft Material: STEEL COMP 4140 OR STEEL COMP 8640; Shaft End Size: 0.750 INCHES IN; Shaft Diameter: 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. 16 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.