The Gear,spur, cataloged under National Stock Number 3020-01-443-4593, 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 Raytheon Company Dba Raytheon Co. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-443-4593 |
| Primary Part Number | G202737-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Keyway Nominal Width | 0.376 INCHES FIRST END IN |
| Bore Nominal Diameter | 0.437 INCHES FIRST END IN |
| Bore Nominal Diameter | 0.437 INCHES COUNTERBORE FIRST END IN |
| Hub Nominal Diameter | 0.750 INCHES SECOND END IN |
| Teeth Quantity | 32 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.502 INCHES COUNTERBORE FIRST END IN |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Bore Style | W/ 2 KEYWAYS FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 1.187 INCHES FIRST END IN |
| First Step Nominal Length | 0.062 INCHES FIRST END IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.0000 INCHES NOMINAL IN |
| First Step Nominal Diameter | 3.620 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| End Nominal Length | 1.125 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.250 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.449 INCHES FIRST END IN |
| End Nominal Diameter | 2.748 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | NICKEL ALLOY K-500 OVERALL |
| Counterbore Nominal Depth | 1.312 INCHES COUNTERBORE FIRST END IN |
| Face Nominal Width | 1.250 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-01-443-4593 is a Gear,spur, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-443-4593 has 2 manufacturer part numbers on file: G202737-1 (Raytheon Company), G202737-1 (Raytheon Company Dba Raytheon Co).
Key specifications for G202737-1: Keyway Nominal Width: 0.376 INCHES FIRST END IN; Bore Nominal Diameter: 0.437 INCHES FIRST END IN; Bore Nominal Diameter: 0.437 INCHES COUNTERBORE FIRST END IN; Hub Nominal Diameter: 0.750 INCHES SECOND END IN. 27 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.