The Gear,helical, cataloged under National Stock Number 3020-00-511-4442, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-511-4442 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 EXTERNALLY LUBRICATED BEARING1 EXTERNALLY LUBRICATED BEARING |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS0.250 INCHES BOTH ENDS IN |
| Helix Angle | 45.0000 DEGREES45.0000 DEGREES |
| Hub Nominal Diameter | 0.562 INCHES FIRST END0.562 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.498 INCHES SECOND END0.498 INCHES SECOND END IN |
| Teeth Quantity | 4040 |
| Body Style | PLAIN, SOLIDPLAIN, SOLID |
| Tooth Direction | LEFTLEFT |
| Bore Style | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.359 INCHES BOTH ENDS0.359 INCHES BOTH ENDS IN |
| Teeth Type | SINGLE HELIXSINGLE HELIX |
| Style Designator | PROTRUDING HUBSPROTRUDING HUBS |
| Pitch Diameter | 1.6640 INCHES MINIMUM AND 1.6640 INCHES MINIMUM AND 1.6660 INCHES MAXIMUM1.6660 INCHES MAXIMUM IN |
| Tooth Form | STANDARDSTANDARD |
| Hub Style Designator | PINNED FIRST ENDPINNED FIRST END |
| Hub Style Designator | PLAIN SECOND ENDPLAIN SECOND END |
| Nominal Outside Diameter | 1.723 INCHES1.723 INCHES IN |
| Surface Treatment | PHOSPHATE HUBPHOSPHATE HUB |
| Pressure Angle | 14.5000 DEGREES14.5000 DEGREES |
| Material | PLASTIC PHENOLIC BODY |
| Material | STEEL HUB |
| Material | PLASTIC PHENOLIC TEETH |
| Face Nominal Width | 0.312 INCHES0.312 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 |
| Reference | Meaning |
|---|---|
| SMB157205 | 5/2 Secondary reference U.S. Government activity |
| 52505A | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-511-4442 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-511-4442: Furnished Items and Quantity: 1 EXTERNALLY LUBRICATED BEARING1 EXTERNALLY LUBRICATED BEARING; Bore Nominal Diameter: 0.250 INCHES BOTH ENDS0.250 INCHES BOTH ENDS IN; Helix Angle: 45.0000 DEGREES45.0000 DEGREES; Hub Nominal Diameter: 0.562 INCHES FIRST END0.562 INCHES FIRST END IN. 23 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.