Where Hexagon Geometry Solves the Assembly Problem
OSENC uses hexagon geometry when the assembly needs anti-rotation positioning, polygonal fit, repeatable edge references or a defined in-plane orientation. When those functions are not required, we move the design to a simpler disc or block geometry.
Anti-Rotation Positioning
Flat sides create repeatable mechanical orientation in a matching pocket or fixture.
Polygonal Housings
A hexagonal profile can match six-sided cavities where a disc or block leaves unnecessary space or changes the assembly geometry.
Edge-to-Edge Layouts
Equal sides support repeatable packing and modular layouts when the magnetic circuit is designed around the polygon.
Side-Referenced Magnetization
Across-flats and across-corners axes provide repeatable mechanical references when the magnetic field must align to a specified in-plane direction.
Hexagon Neodymium Magnet Dimension Definition
| Dimension | OSENC Drawing Definition | Engineering Control |
|---|
| Across Corners D | Primary D definition used on this page | The straight-line distance between two opposite vertices of a regular hexagon. |
| Side Length | 0.5 × D | Geometric relationship for a regular hexagon. If side length is the purchasing dimension, the drawing controls. |
| Across Flats | 0.8660 × D | Geometric relationship for a regular hexagon. Critical Across-Flats fit dimensions should be called out directly. |
| Height H | Independent drawing dimension | Height is reviewed together with the complete hexagon geometry, holes, chamfers, coating and magnetization requirement. |
| Internal Angle | 120° for regular hexagons | Irregular six-sided parts follow the angles and side dimensions on the approved drawing. |
Size capability is project-confirmed. OSENC reviews the complete D × H geometry, remaining wall thickness, machined features, coating and magnetization before releasing a manufacturing specification. We do not treat independent extreme dimensions as one guaranteed part size.
Send the complete drawing and OSENC will confirm the manufacturable geometry and the dimensions that should control inspection.
Send Your Hexagon Magnet Drawing
Hexagon vs Disc vs Block Magnets
The correct magnet shape starts with the mechanical interface and magnetic circuit. OSENC uses the geometry that solves the assembly requirement instead of forcing a special shape where a simpler magnet already works.
| Shape | Best Choice When | Main Mechanical Advantage |
|---|
| Hexagon | Orientation, polygonal fit or repeatable edge references matter. | Six flats and six corners provide defined mechanical indexing. |
| Disc | Rotational symmetry and simple round mounting are preferred. | Simple geometry and no required in-plane orientation. |
| Block | Rectangular mounting surfaces and straightforward dimensional control are preferred. | Simple length × width × thickness interface. |
When a Hexagon Magnet Is Not the Best Choice
OSENC keeps the hexagon shape only when it solves a real mechanical or magnetic requirement. If the polygon adds machining without adding function, we simplify the part before production.
| Assembly Requirement | OSENC Direction |
|---|
| No anti-rotation requirement | Use a disc when rotational symmetry gives the simpler assembly. |
| Rectangular mounting pocket | Use a block when the interface is naturally defined by length × width × thickness. |
| Hexagon adds machining without functional value | Simplify the geometry and remove unnecessary processing. |
| Defined polygonal orientation is required | Keep the hexagon and control Across Corners, Across Flats and the required in-plane reference on the drawing. |
Buyer Risk Control
What OSENC Helps Prevent in Hexagon Magnet Production
Special geometry only adds value when the drawing, magnetization and finished-part inspection all use the same definition. OSENC locks the points below before repeat production so a mechanically correct-looking part does not become an assembly failure.
Dimension Definition Errors
Across Corners, Across Flats, H and any purchasing dimensions are identified before quotation so one “D” callout does not turn into two different interpretations.
Magnetization Direction Errors
Pole faces and in-plane field direction are marked against the drawing before magnetization, especially when Across Flats or Across Corners controls orientation.
Assembly Fit Problems
Critical fit dimensions are controlled on the finished coated part so coating build and machined features do not silently change the assembly interface.
Sample-to-Production Drift
Approved geometry, grade, coating, magnetization and inspection items become the controlled basis for repeat production after sample approval.
NdFeB Grades for Hexagon Magnets
OSENC selects the material around the required magnetic output, geometry, working temperature and magnetic circuit rather than choosing grade by maximum energy product alone.
Core Grades
N35, N38, N40, N42, N45, N48, N50 and N52 cover the core grade families used for this page.
High-Coercivity Families
M, H, SH, UH and EH families are used for applications that require a different coercivity and temperature margin.
Engineering Selection
We select grade together with magnet geometry, working gap, operating temperature and the magnetic circuit so the material choice matches the finished assembly.
For temperature-sensitive designs, send the continuous working temperature and the expected peak or storage temperature. Thin geometry and unfavorable load lines can change demagnetization margin, so OSENC confirms the grade against the actual application rather than relying on a catalog temperature label alone.
Compare OSENC Neodymium Magnet Options · How to Measure Magnet Strength
Coatings and Finished Dimensions for Hexagon Neodymium Magnets
OSENC manufactures hexagon NdFeB magnets with Ni-Cu-Ni, zinc and epoxy coating options selected around the environmental and assembly requirements defined for the project.
When coating build affects assembly clearance, we control the project around the finished coated dimensions. Put critical fit dimensions on the purchasing drawing so inspection follows the finished part that actually enters your assembly.
Ni-Cu-Ni
A common metallic protection system for general industrial and controlled-environment applications.
Zinc
A thin metallic coating option for projects where the environment and finished-dimension requirement suit this finish.
Epoxy
An alternative protective finish for projects where corrosion exposure, surface behavior or the assembly requirement calls for a non-metallic coating system.
Production Definition
From RFQ to an Approved Hexagon NdFeB Production Specification
A short RFQ is enough to start. Before repeat production, OSENC converts the request into one controlled finished-part specification so geometry, material, coating, magnetization and inspection use the same drawing basis.
| Your RFQ Input | OSENC Confirms |
|---|
| “D20 hexagon” | Whether D means Across Corners, Across Flats or another controlled dimension, plus H and the critical geometry. |
| “N52” | Grade suitability together with working temperature, geometry, magnetic circuit and the required validation target. |
| Side-direction field | The exact pole faces or in-plane direction, such as Across Flats or Across Corners. |
| “Nickel coating” | The coating system, finished dimensions and the environmental or assembly requirements that affect the finish. |
| Tight tolerance | Which dimensions are function-critical and the manufacturable tolerance for the requested geometry. |
| Large or unusual geometry | The complete geometry is reviewed as one part rather than treating isolated outer-size and height values as guaranteed capability. |
Five-Step Production Lock
- Define the geometry. Lock D, H, Across Flats, side length, holes, chamfers and irregular-profile dimensions.
- Confirm the magnetic specification. Match grade, working temperature and magnetization direction to the application.
- Confirm the finished surface. Lock coating and finished coated dimensions.
- Define inspection items. Identify dimensional, coating, pole-direction and project-defined magnetic checks.
- Release repeat production. Use the approved sample specification as the controlled basis for repeat production.
