The Gear Cluster, cataloged under National Stock Number 3020-01-101-1818, 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 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 19 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 | 3020-01-101-1818 |
| Primary Part Number | 11732940 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.250 INCHES BOTH ENDS0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.500 INCHES BETWEEN FIRST AND SECOND GEAR0.500 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Design Type | SPUR SECOND GEARSPUR SECOND GEAR |
| Design Type | SPUR FIRST GEARSPUR FIRST GEAR |
| Precision Classification | QUALITY NUMBER 12 ALL GEARSQUALITY NUMBER 12 ALL GEARS |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 28.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL38.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.726 INCHES1.726 INCHES IN |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-764,COND H FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-S-764,COND H FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEARPLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Style Designator | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Hub Nominal Length | 0.220 INCHES FIRST END0.220 INCHES FIRST END IN |
| Hub Nominal Length | 0.2200 INCHES SECOND END0.2200 INCHES SECOND END IN |
| Hub Nominal Length | 0.851 INCHES BETWEEN FIRST AND SECOND GEAR0.851 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 0.780 INCHES SECOND GEAR0.780 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 2.310 INCHES FIRST GEAR2.310 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE OVERALLPASSIVATE OVERALL |
| Material | STEEL COMP 416 OVERALLSTEEL COMP 416 OVERALL |
| Construction | SOLIDSOLID |
| 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 |
|---|---|
| 11732940 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 3020-01-101-1818 is a Gear Cluster, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-101-1818 has 1 manufacturer part number on file: 11732940 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 11732940: Hub Nominal Diameter: 0.250 INCHES BOTH ENDS0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.500 INCHES BETWEEN FIRST AND SECOND GEAR0.500 INCHES BETWEEN FIRST AND SECOND GEAR IN; Surface Treatment Document and Classification: MIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Design Type: SPUR SECOND GEARSPUR SECOND GEAR. 19 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.