The Gear,helical, cataloged under National Stock Number 3020-00-974-9035, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) 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 30 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 | 3020-00-974-9035 |
| Primary Part Number | 11598465 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.500 INCHES BOTH ENDS IN |
| Helix Angle | 17.9386 DEGREES |
| Teeth Quantity | 70 |
| Second Step Nominal Diameter | 2.437 INCHES FIRST END IN |
| Body Style | WEBBED, SOLID |
| Counterbore Nominal Diameter | 1.626 INCHES FIRST END IN |
| Counterbore Nominal Diameter | 1.652 INCHES SECOND END IN |
| Tooth Direction | RIGHT |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.312 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.235 INCHES SECOND END IN |
| First Step Nominal Length | 0.687 INCHES FIRST END IN |
| First Step Nominal Length | 0.527 INCHES SECOND END IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 80.0 ROCKWELL A MINIMUM AND 83.0 ROCKWELL A MAXIMUM TEETH |
| Nominal Overall Length | 4.000 INCHES IN |
| Second Step Nominal Length | 0.328 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.1314 INCHES NOMINAL IN |
| Tooth Form | STUB |
| First Step Nominal Diameter | 2.001 INCHES BOTH ENDS IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Spline Quantity | 14 BOTH ENDS |
| End Nominal Length | 0.625 INCHES FIRST END IN |
| End Nominal Length | 0.716 INCHES SECOND END IN |
| Nominal Outside Diameter | 5.468 INCHES IN |
| End Nominal Diameter | 1.879 INCHES FIRST END IN |
| End Nominal Diameter | 2.001 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| 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 |
|---|---|
| 11598465 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-00-974-9035 is a Gear,helical, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-974-9035 has 1 manufacturer part number on file: 11598465 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11598465: Bore Nominal Diameter: 1.500 INCHES BOTH ENDS IN; Helix Angle: 17.9386 DEGREES; Teeth Quantity: 70; Second Step Nominal Diameter: 2.437 INCHES FIRST END IN. 30 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.