The Gear Cluster, cataloged under National Stock Number 3020-01-073-6007, 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 American Precision Gear Company Dba American Precision Gear Co Div Same. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-073-6007 |
| Primary Part Number | 124691 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | American Precision Gear Company Dba American Precision Gear Co Div Same |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.655 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.125 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Counterbore Nominal Diameter | 0.7495 INCHES BOTH ENDS IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Nominal Overall Length | 1.293 INCHES IN |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.513 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 1.6600 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 5.4125 INCHES FIRST GEAR IN |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.500 INCHES BOTH ENDS IN |
| 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 |
|---|---|
| 124691 PRIMARY | American Precision Gear Company Dba American Precision Gear Co Div Same (USA) |
| Reference | Meaning |
|---|---|
| 124691 | 5/9 Secondary reference Lockheed Martin Corp Electronics and Missiles Div |
NSN 3020-01-073-6007 is a Gear Cluster, manufactured by American Precision Gear Company Dba American Precision Gear Co Div Same, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-073-6007 has 1 manufacturer part number on file: 124691 (American Precision Gear Company Dba American Precision Gear Co Div Same).
3 possible matches (shared part number, not a government interchangeability claim): 4720-01-167-0521, 6220-01-374-1883, 5305-01-559-0552. Verify interchangeability with system specifications before substitution.
Key specifications for 124691: Bore Nominal Diameter: 0.655 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.125 INCHES BETWEEN FIRST AND SECOND GEAR IN; Counterbore Nominal Diameter: 0.7495 INCHES BOTH ENDS IN; Design Type: SPUR SECOND GEAR. 15 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.