The Gear,internal, cataloged under National Stock Number 3020-01-295-9791, 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 29 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-295-9791 |
| Primary Part Number | 975431-1 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.627 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 5.960 INCHES SECOND END IN |
| Teeth Quantity | 43 |
| Surface Treatment Document and Classification | MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Flange Nominal Thickness | 0.406 INCHES IN |
| Flange Nominal Diameter | 7.747 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 3 THREADED AND 3 PLAIN AXIALLY THROUGH BODY FIRST END |
| First Step Nominal Length | 0.182 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.387 INCHES AND 0.396 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Teeth Type | SPUR |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.849 INCHES IN |
| Style Designator | FLANGED RING |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.6875 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 3.494 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Mounting Hole Nominal Thread Size | 0.375 INCHES AXIALLY THROUGH BODY FIRST END IN |
| End Nominal Length | 0.193 INCHES FIRST END IN |
| Nominal Outside Diameter | 3.249 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 24 AXIALLY THROUGH BODY FIRST END |
| Surface Treatment | PASSIVATE OVERALL |
| End Nominal Diameter | 3.249 INCHES FIRST END IN |
| Pressure Angle | 30.0000 DEGREES |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-01-295-9791 is a Gear,internal, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-295-9791 has 2 manufacturer part numbers on file: 975431-1 (Raytheon Company), 975431-1 (Raytheon Company Dba Raytheon Co).
Key specifications for 975431-1: Bore Nominal Diameter: 2.627 INCHES BOTH ENDS IN; Hub Nominal Diameter: 5.960 INCHES SECOND END IN; Teeth Quantity: 43; Surface Treatment Document and Classification: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 29 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.