The Gear,helical, cataloged under National Stock Number 3020-00-423-9795, 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 Caterpillar Inc Div Caterpillar Defense. 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 | 3020-00-423-9795 |
| Primary Part Number | 6B4756 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.492 INCHES BOTH ENDS IN |
| Helix Angle | 25.5411 DEGREES |
| Hub Nominal Diameter | 2.750 INCHES FIRST END IN |
| Hub Nominal Diameter | 2.750 INCHES SECOND END IN |
| Teeth Quantity | 56 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.607 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 2.232 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 8.8667 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 9.2500 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.375 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 |
|---|---|
| 6B4756 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3020-00-423-9795 is a Gear,helical, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-423-9795 has 1 manufacturer part number on file: 6B4756 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 6B4756: Bore Nominal Diameter: 1.492 INCHES BOTH ENDS IN; Helix Angle: 25.5411 DEGREES; Hub Nominal Diameter: 2.750 INCHES FIRST END IN; Hub Nominal Diameter: 2.750 INCHES SECOND END IN. 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.