The Gear Cluster, cataloged under National Stock Number 3020-01-286-7927, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-286-7927 |
| Primary Part Number | 11629980 |
| Item Name | Gear Cluster |
| 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 | 2.338 INCHES FIRST END IN |
| Bore Nominal Diameter | 5.930 INCHES SECOND END IN |
| Hub Nominal Diameter | 3.590 INCHES FIRST END IN |
| Design Type | SPUR ALL GEARS |
| Bore Style | INVOLUTE SPLINE FIRST END |
| Bore Style | PARTIAL SECOND END |
| Hardness Rating | 196.0 BRINELL STANDARD MINIMUM AND 255.0 BRINELL STANDARD MAXIMUM OVERALL |
| Nominal Overall Length | 1.640 INCHES IN |
| Bore Nominal Depth | 0.910 INCHES SECOND END IN |
| Hub Style Designator | PLAIN FIRST END |
| Spline Quantity | 36 FIRST END |
| Hub Nominal Length | 0.480 INCHES FIRST END IN |
| Nominal Outside Diameter | 6.800 INCHES SECOND GEAR IN |
| Material | IRON CAST OVERALL |
| Spline Pitch Diameter | 2.2500 INCHES NOMINAL FIRST END IN |
| Construction | SOLID |
| 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 |
|---|---|
| 11629980 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 10397728 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3020-01-286-7927 is a Gear Cluster, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-286-7927 has 1 manufacturer part number on file: 11629980 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11629980: Bore Nominal Diameter: 2.338 INCHES FIRST END IN; Bore Nominal Diameter: 5.930 INCHES SECOND END IN; Hub Nominal Diameter: 3.590 INCHES FIRST END IN; Design Type: SPUR ALL GEARS. 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.