The Gear,helical, cataloged under National Stock Number 3020-00-425-7115, 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 Eaton Corp Transmission Div. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-425-7115 |
| Primary Part Number | 5220 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Eaton Corp Transmission Div |
| Status | ACTIVE |
| Keyway Nominal Width | 0.378 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 2.249 INCHES BOTH ENDS IN |
| Helix Angle | 23.4167 DEGREES |
| Hub Nominal Diameter | 2.750 INCHES FIRST END IN |
| Hub Nominal Diameter | 2.750 INCHES SECOND END IN |
| Teeth Quantity | 49 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.329 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 1.767 INCHES IN |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUB |
| Material Document and Classification | 66,AISI/SAE 8620 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 7.3120 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 8.3120 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.317 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8620 OVERALL |
| Face Nominal Width | 1.438 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 |
|---|---|
| 5220 PRIMARY | Eaton Corp Transmission Div (USA) |
| Reference | Meaning |
|---|---|
| 5220 | 5/9 Secondary reference Koehring Co Lorain Div |
| 5220 | 5/9 Secondary reference Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co |
NSN 3020-00-425-7115 is a Gear,helical, manufactured by Eaton Corp Transmission Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-425-7115 has 1 manufacturer part number on file: 5220 (Eaton Corp Transmission Div).
Key specifications for 5220: Keyway Nominal Width: 0.378 INCHES BOTH ENDS IN; Bore Nominal Diameter: 2.249 INCHES BOTH ENDS IN; Helix Angle: 23.4167 DEGREES; Hub Nominal Diameter: 2.750 INCHES FIRST END IN. 22 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.