The Gear Cluster, cataloged under National Stock Number 3020-00-326-7486, 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 Allison Transmission Inc Dba Allison Transmission, Inc. 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 | 3020-00-326-7486 |
| Primary Part Number | 6731644 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.3749 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.454 INCHES FIRST END IN |
| Design Type | SPUR ALL GEARS |
| Nominal Overall Length | 1.188 INCHES IN |
| Material Document and Classification | AMS6272 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Hub Nominal Length | 0.344 INCHES FIRST END IN |
| Hub Nominal Length | 0.294 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.250 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 2.250 INCHES FIRST GEAR IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 6731644 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 3020-00-326-7486 is a Gear Cluster, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-326-7486 has 1 manufacturer part number on file: 6731644 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6731644: Hub Nominal Diameter: 0.3749 INCHES SECOND END IN; Hub Nominal Diameter: 0.454 INCHES FIRST END IN; Design Type: SPUR ALL GEARS; Nominal Overall Length: 1.188 INCHES IN. 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.