The Gear,helical, cataloged under National Stock Number 3020-01-006-0663, 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 Engine Center Inc Div Engine Center. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-006-0663 |
| Primary Part Number | Y112H00317 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Engine Center Inc Div Engine Center |
| Status | ACTIVE |
| Keyway Nominal Width | 0.250 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.875 INCHES BOTH ENDS IN |
| Helix Angle | 37.0000 DEGREES |
| Hub Nominal Diameter | 1.740 INCHES BOTH ENDS IN |
| Teeth Quantity | 23 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.290 INCHES BOTH ENDS IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 269.0 BRINELL STANDARD MINIMUM AND 302.0 BRINELL STANDARD MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 2.9660 INCHES MINIMUM AND 2.9680 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 3.159 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.563 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.750 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 |
|---|---|
| Y112H00317 PRIMARY | Engine Center Inc Div Engine Center (USA) |
| 1776486 PRIMARY | Dana Off Highway Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| Y112H00317 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| Y112H317 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| 1776486 | 5/9 Secondary reference Clark Equipment Co |
NSN 3020-01-006-0663 is a Gear,helical, manufactured by Engine Center Inc Div Engine Center, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-006-0663 has 2 manufacturer part numbers on file: Y112H00317 (Engine Center Inc Div Engine Center), 1776486 (Dana Off Highway Products, Llc).
Key specifications for Y112H00317: Keyway Nominal Width: 0.250 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.875 INCHES BOTH ENDS IN; Helix Angle: 37.0000 DEGREES; Hub Nominal Diameter: 1.740 INCHES BOTH ENDS IN. 20 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.