The Gear Cluster, cataloged under National Stock Number 3020-01-215-3345, 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 20 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 | 3020-01-215-3345 |
| Primary Part Number | 23018108 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.335 INCHES FIRST END IN |
| Hub Nominal Diameter | 2.880 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Diameter | 3.450 INCHES FIRST END IN |
| Counterbore Nominal Diameter | 2.480 INCHES FIRST END IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | W/COUNTERBORE FIRST END |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM OVERALL |
| Nominal Overall Length | 2.440 INCHES IN |
| Material Document and Classification | SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.840 INCHES FIRST END IN |
| Hub Nominal Length | 0.470 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 3.361 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 9.697 INCHES FIRST GEAR IN |
| Material | STEEL COMP 8620 OVERALL |
| Counterbore Nominal Depth | 0.870 INCHES FIRST END IN |
| Construction | ASSEMBLED |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 23018108 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
NSN 3020-01-215-3345 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 3020-01-215-3345 has 1 manufacturer part number on file: 23018108 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 23018108: Bore Nominal Diameter: 2.335 INCHES FIRST END IN; Hub Nominal Diameter: 2.880 INCHES BETWEEN FIRST AND SECOND GEAR IN; Hub Nominal Diameter: 3.450 INCHES FIRST END IN; Counterbore Nominal Diameter: 2.480 INCHES FIRST END IN. 20 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.