The Gear,helical, cataloged under National Stock Number 3020-01-231-9273, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-231-9273 |
| Primary Part Number | 11662849 |
| 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 |
| Helix Angle | 4.7854 DEGREES |
| Teeth Quantity | 24 |
| Body Style | WEBBED, SOLID |
| Tooth Direction | RIGHT |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES BOTH ENDS IN |
| Teeth Type | SPIRAL |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Pitch Diameter | 3.8860 INCHES NOMINAL IN |
| Nominal Outside Diameter | 4.500 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | IRON CAST OVERALL |
| Body Recess Nominal Depth | 1.500 INCHES BOTH ENDS IN |
| Face Nominal Width | 1.000 INCHES 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 |
|---|---|
| 11662849 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-231-9273 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 3020-01-231-9273 has 1 manufacturer part number on file: 11662849 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11662849: Helix Angle: 4.7854 DEGREES; Teeth Quantity: 24; Body Style: WEBBED, SOLID; Tooth Direction: RIGHT. 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.
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.