The Gear,helical, cataloged under National Stock Number 3020-00-755-6887, 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 | 3020-00-755-6887 |
| Primary Part Number | 4L6703 |
| 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 | 1.7480 INCHES BOTH ENDS IN |
| Helix Angle | 6.0000 DEGREES |
| Teeth Quantity | 25 |
| Body Style | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 6 PLAIN AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.403 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS, RECESSED BODY |
| Pitch Diameter | 4.4210 INCHES NOMINAL IN |
| Tooth Form | SPECIAL |
| Features Provided | CASEHARDENED |
| Nominal Outside Diameter | 4.7750 INCHES IN |
| Material | STEEL OVERALL |
| Bolt Hole Circle Nominal Diameter | 2.625 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.630 INCHES FIRST END IN |
| Face Nominal Width | 1.004 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 |
|---|---|
| 4L6703 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3020-00-755-6887 is a Gear,helical, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-755-6887 has 1 manufacturer part number on file: 4L6703 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4L6703: Bore Nominal Diameter: 1.7480 INCHES BOTH ENDS IN; Helix Angle: 6.0000 DEGREES; Teeth Quantity: 25; Body Style: WEBBED, OFFSET, WITH LIGHTENING HOLES. 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.