The Gear,helical, cataloged under National Stock Number 3020-00-424-6045, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-424-6045 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.312 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.503 INCHES BOTH ENDS IN |
| Helix Angle | 30.7333 DEGREES |
| Hub Nominal Diameter | 2.281 INCHES BOTH ENDS IN |
| Teeth Quantity | 23 |
| Body Style | WEBBED, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.438 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 1045 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.2810 INCHES MINIMUM AND 5.2860 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 5.569 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.906 INCHES BOTH ENDS IN |
| Surface Treatment | OXIDE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1045 OVERALL |
| Face Nominal Width | 1.500 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 |
|---|---|
| 350484 | 3/9 Design control — primary reference American Standard Inc Westinghouse Air Brake Co Div |
| 350484 | 5/9 Secondary reference Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co |
NSN 3020-00-424-6045 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5360-01-096-7702, 5340-01-265-7277. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-424-6045: Keyway Nominal Width: 0.312 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.503 INCHES BOTH ENDS IN; Helix Angle: 30.7333 DEGREES; Hub Nominal Diameter: 2.281 INCHES BOTH ENDS IN. 21 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.