The Gear,helical, cataloged under National Stock Number 3020-00-693-1068, 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 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-693-1068 |
| Primary Part Number | C238390-1 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.500 INCHES COUNTERBORE FIRST END IN |
| Helix Angle | 7.0333 DEGREES |
| Teeth Quantity | 20 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.710 INCHES COUNTERBORE FIRST END IN |
| Tooth Direction | LEFT |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Material Document and Classification | ASTM B139-46T,GRADE B2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.8340 INCHES MINIMUM AND 0.8368 INCHES MAXIMUM IN |
| Tooth Form | SPECIAL |
| Nominal Outside Diameter | 0.8932 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Counterbore Nominal Depth | 0.030 INCHES COUNTERBORE FIRST END IN |
| Face Nominal Width | 0.064 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 |
| Part Number | Manufacturer |
|---|---|
| C238390-1 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| N16-G-413286-866 | 5/9 Secondary reference U.S. Government activity |
| 2Z4887-31 | 5/2 Secondary reference U.S. Government activity |
| C238390 | D/9 Drawing number reference only Raytheon Company Dba Raytheon Co |
NSN 3020-00-693-1068 is a Gear,helical, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-693-1068 has 1 manufacturer part number on file: C238390-1 (Raytheon Company Dba Raytheon Co).
Key specifications for C238390-1: Bore Nominal Diameter: 0.500 INCHES COUNTERBORE FIRST END IN; Helix Angle: 7.0333 DEGREES; Teeth Quantity: 20; Body Style: PLAIN, SOLID. 17 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.