The Gear,worm, cataloged under National Stock Number 3020-00-423-9864, 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 16 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 | 3020-00-423-9864 |
| Primary Part Number | 6B6912 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Thread Form Direction | LEFT-HAND |
| Helix Angle | 4.1000 DEGREES |
| Hub Nominal Diameter | 3.000 INCHES BOTH ENDS IN |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.094 INCHES BOTH ENDS IN |
| Face Type | STRAIGHT |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.0000 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 6 BOTH ENDS |
| Thread Form Quantity | 1 |
| Nominal Outside Diameter | 4.569 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 1115 OVERALL |
| Face Nominal Width | 4.815 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 |
|---|---|
| 6B6912 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3020-00-423-9864 is a Gear,worm, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-423-9864 has 1 manufacturer part number on file: 6B6912 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 6B6912: Thread Form Direction: LEFT-HAND; Helix Angle: 4.1000 DEGREES; Hub Nominal Diameter: 3.000 INCHES BOTH ENDS IN; Bore Style: STRAIGHT SPLINE BOTH ENDS. 16 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.