The Gear,helical, cataloged under National Stock Number 3020-00-137-1867, 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 Hamilton Sundstrand Corporation Div Mission Systems. Government technical data includes 23 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 | 3020-00-137-1867 |
| Primary Part Number | 326246 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hamilton Sundstrand Corporation Div Mission Systems |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.125 INCHES BOTH ENDS IN |
| Helix Angle | 45.0000 DEGREES |
| Hub Nominal Diameter | 0.188 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.156 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.013 INCHES SECOND END IN |
| Teeth Quantity | 28 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | LEFT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.150 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.047 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | ONE PROTRUDING HUB, ONE RECESSED HUB |
| Material Document and Classification | QQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.6166 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 0.6496 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY 642 OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.100 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 |
|---|---|
| 326246 PRIMARY | Hamilton Sundstrand Corporation Div Mission Systems (USA) |
NSN 3020-00-137-1867 is a Gear,helical, manufactured by Hamilton Sundstrand Corporation Div Mission Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-137-1867 has 1 manufacturer part number on file: 326246 (Hamilton Sundstrand Corporation Div Mission Systems).
Key specifications for 326246: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Helix Angle: 45.0000 DEGREES; Hub Nominal Diameter: 0.188 INCHES FIRST END IN; Hub Nominal Diameter: 0.156 INCHES SECOND 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.