Custom Hex Flange Eccentric Bolts – Hetai
Hetai Custom Fasteners | Precision Machining | OEM & ODM
Hetai specializes in manufacturing Custom Hex Flange Eccentric Bolts for mechanical assemblies that require precise positioning, offset adjustment, or customized fastening geometry. Combining a hexagonal flange head with an eccentric shaft or offset feature, these bolts provide both reliable clamping and practical alignment capabilities.
Unlike conventional bolts with a concentric shank, an eccentric bolt is intentionally machined with an offset centerline. By rotating the eccentric section during installation, engineers can make controlled positional adjustments between mating components. This makes the design particularly useful in assemblies where precise alignment or compensation for dimensional tolerances is required.
Unique Eccentric Design
The key feature of the Hetai Eccentric Bolt is its precisely controlled offset geometry.
The eccentric shaft is manufactured with the required offset from the bolt’s primary axis. When the bolt is rotated, the eccentric section moves relative to the surrounding hole or mating component, allowing the position of the connected part to be adjusted.
Depending on the application, Hetai can customize:
- Eccentric offset
- Shaft diameter
- Head dimensions
- Flange diameter
- Thread size and pitch
- Overall length
- Eccentric section length
- Shoulder dimensions
- Chamfer and radius
- Threaded and unthreaded sections
This enables the bolt to function not only as a fastening component but also as a precision positioning and alignment element.
Hex Flange Head for Reliable Fastening
The integrated hexagonal flange head provides several advantages over conventional bolt designs.
The hexagonal profile allows the bolt to be securely tightened with a standard wrench or socket, providing efficient torque transmission during assembly.
The integrated flange increases the bearing surface beneath the head, helping distribute clamping forces over a larger area. This can reduce localized surface pressure and minimize the risk of damage to the mating component.
The flange also eliminates the need for a separate washer in many applications, simplifying assembly and reducing the number of individual components.
Precision Position Adjustment
One of the primary advantages of an eccentric bolt is its ability to compensate for small positional deviations.
When the eccentric section is rotated, the connected component can move slightly relative to its original position. This makes the bolt particularly useful for:
- Component alignment
- Hole-position compensation
- Mechanical adjustment
- Suspension alignment
- Fixture positioning
- Hinge adjustment
- Guide mechanism alignment
- Manufacturing tolerance compensation
The required eccentricity can be precisely controlled according to the customer’s engineering drawings and functional requirements.
Custom Manufacturing by Hetai
As a professional manufacturer of custom and non-standard fasteners, Hetai can produce eccentric bolts according to drawings, samples, CAD files, or specific application requirements.
Our manufacturing capabilities include:
- CNC Turning
- Automatic Lathe Machining
- Cold Heading
- Thread Rolling
- CNC Milling
- Drilling
- Secondary Machining
- Precision Grinding
- Surface Treatment
Complex eccentric profiles can be produced with controlled dimensional tolerances to ensure consistent positioning performance during assembly.
Material Options
Hetai offers a wide selection of materials to meet different mechanical and environmental requirements.
Carbon Steel & Alloy Steel
Suitable for applications requiring high mechanical strength, wear resistance, and cost efficiency.
Stainless Steel
304 and 316 stainless steel are available for applications requiring enhanced corrosion resistance and long-term durability.
Aluminum Alloy
Lightweight aluminum alloys can be selected for weight-sensitive applications where high strength-to-weight performance is important.
Titanium Alloy
Titanium alloys such as Ti-6Al-4V can be supplied for demanding applications requiring excellent strength-to-weight ratio, corrosion resistance, and lightweight construction.
Surface Finishes
To improve corrosion resistance, wear resistance, and appearance, Hetai can provide a range of surface treatments, including:
- Zinc Plating
- Nickel Plating
- Chrome Plating
- Black Oxide
- Electrophoresis
- Passivation
- Anodizing
- Custom Coatings
Different finishes and colors can also be customized according to the customer’s requirements.
Applications
Custom Hex Flange Eccentric Bolts are widely applicable to precision mechanical assemblies and equipment, including:
- Automotive Suspension Systems
- Steering Components
- Chassis Systems
- Industrial Machinery
- Robotics
- Automation Equipment
- Fixtures and Jigs
- Hinges and Linkages
- Agricultural Machinery
- Construction Equipment
- Precision Mechanical Assemblies
In automotive applications, eccentric bolts can be particularly useful for alignment and adjustment mechanisms where controlled positional changes are required.
Quality Control
Hetai maintains strict quality control throughout the manufacturing process.
Depending on customer requirements, inspection may include:
- Material Composition Analysis
- Dimensional Inspection
- Thread Gauge Inspection
- Hardness Testing
- Tensile Strength Testing
- Concentricity and Runout Inspection
- Eccentricity Measurement
- Optical Inspection
Critical eccentric dimensions can be inspected using precision measuring equipment to ensure repeatable positioning and reliable assembly performance.
Why Choose Hetai?
Hetai has extensive experience in manufacturing custom non-standard screws, bolts, nuts, and CNC-machined fasteners.
From prototype development to mass production, our engineering team works closely with customers to optimize the product structure, material, tolerances, machining process, and surface finish.
Whether you require a simple eccentric bolt or a highly specialized fastening component with multiple precision features, Hetai can manufacture it according to your specifications.
Send us your drawings or samples and let Hetai turn your custom fastening concept into a precision-manufactured component.
