The Gear Cluster, cataloged under National Stock Number 3020-00-151-6697, 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 Marples Gears, Inc.. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-151-6697 |
| Primary Part Number | 370-117420-1 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Marples Gears, Inc. |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.505 INCHES BOTH ENDS IN |
| Backlash Designation | GRADE C FIRST GEAR |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Precision Classification | QUALITY NUMBER 9 ALL GEARS |
| Nominal Overall Length | 1.640 INCHES IN |
| Material Document and Classification | AMS 5610,COND A ASSN STD SINGLE MATERIAL RESPONSE FIRST GEAR |
| Material Document and Classification | AMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE SECOND GEAR |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Hub Nominal Length | 0.267 INCHES FIRST END IN |
| Hub Nominal Length | 0.373 INCHES SECOND END IN |
| Nominal Outside Diameter | 0.688 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 2.3542 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL SECOND GEAR |
| Material | STEEL FIRST GEAR |
| Construction | ASSEMBLED |
| 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 |
|---|---|
| 370-117420-1 PRIMARY | Marples Gears, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 370-117420-1 | 5/9 Secondary reference Us2c Holdings Llc Dba Bay Swiss Manufacturing Div Main |
| 370-117420-1 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-151-6697 is a Gear Cluster, manufactured by Marples Gears, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-151-6697 has 1 manufacturer part number on file: 370-117420-1 (Marples Gears, Inc.).
Key specifications for 370-117420-1: Hub Nominal Diameter: 0.505 INCHES BOTH ENDS IN; Backlash Designation: GRADE C FIRST GEAR; Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Design Type: SPUR SECOND GEAR. 18 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.