The Gear,spur, cataloged under National Stock Number 3020-01-644-4859, 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 8 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 | 3020-01-644-4859 |
| Primary Part Number | 12446405 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Teeth Quantity | 60 |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Supplementary Features | IS A PART OF A TRANSMISSION,HYDRAULIC,VEHICULAR; NEXT ASSY PART NO. 12446406 AND 12446609; USED ON HMPT800 AND HMPT675; DESIGNED TO MATE WITH PART NO. 12446348 |
| Keyway Quantity | 1 |
| Nominal Distance From Bore Center to Keyway Bottom | 0.52095 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0 DEGREES |
| Material | STEEL COMP 4620 OR STEEL COMP 4620H OVERALL |
| Nominal Thickness | 1.030 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 |
|---|---|
| 12446405 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-01-644-4859 is a Gear,spur, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-644-4859 has 1 manufacturer part number on file: 12446405 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12446405: Teeth Quantity: 60; Bore Style: W/ KEYWAY BOTH ENDS; Supplementary Features: IS A PART OF A TRANSMISSION,HYDRAULIC,VEHICULAR; NEXT ASSY PART NO. 12446406 AND 12446609; USED ON HMPT800 AND HMPT675; DESIGNED TO MATE WITH PART NO. 12446348; Keyway Quantity: 1. 8 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.