Countersunk hexagonal bolts combine a hex drive design with a flat countersunk head, ensuring flush mounting in mechanical, structural, and construction applications. These hexagonal countersunk bolts provide high torque transmission with a neat surface finish, enhancing safety and aesthetics in assembly projects.
๐ฉ What is a Countersunk Hexagonal Bolt?
A countersunk hexagonal bolt features:
- Head Type: Flat countersunk head for flush surface installation
- Drive Type: Internal hex socket for secure tightening
- Thread Types: Metric (M3, M4, M5, M6, M8, M10, M12) or UNC/UNF threads
- Material Options: Carbon steel, stainless steel (304 / 316), alloy steel, titanium
- Length: From 6mm to 150mm or customized based on project requirements
- Standards: DIN 7991 / ISO 10642
These countersunk hex bolts are designed for applications where a flush finish is needed without compromising fastening strength.
โ Key Specifications
- Thread Sizes: M3 โ M12 standard, other sizes customizable
- Material Grades:
- Carbon Steel (Grade 8.8 / 10.9 / 12.9): for heavy machinery and construction
- Stainless Steel 304 / 316: corrosion resistance for marine and outdoor use
- Titanium: lightweight high-strength fasteners for aerospace and medical
- Surface Treatments: Plain, zinc plated, black oxide, hot-dip galvanized, anodized titanium
โ๏ธ Applications of Hexagonal Countersunk Bolts
โ Mechanical assembly โ flush head ensures safety and aesthetics
โ Steel structures and construction โ high tensile strength for structural joints
โ Automotive components โ bodywork and chassis assembly with flush finish
โ Marine and offshore installations โ stainless steel countersunk hex bolts for corrosion resistance
โ Aerospace equipment โ titanium options for lightweight structural assemblies
๐ง Advantages of Choosing Our Countersunk Hex Bolts
โ
Flush head design enhances safety and appearance
โ
Hex socket drive provides secure torque application
โ
High tensile strength for heavy-duty applications
โ
Wide material options to suit diverse environments
โ
OEM & ODM customization for dimensions, threading, head type, material, and coating
๐ฆ Packaging & Supply Details
- MOQ: 1,000 pcs per size
- Packaging: Bulk cartons with pallets / small boxes with labels / OEM branded packaging
- Lead Time: 7โ15 working days depending on material and customization
- Customization: Diameter, length, head type, drive type, material grade, coating, branding
๐ก Why Choose Our Countersunk Hexagonal Bolts?
As a professional countersunk hexagonal bolt manufacturer and supplier, we provide:
โ Strict quality control from raw material sourcing to CNC machining and final inspection
โ Competitive factory pricing with stable long-term supply
โ OEM & ODM services for machinery manufacturers, construction hardware brands, automotive suppliers, and fastener distributors
โ Export experience to Europe, North America, Southeast Asia, and the Middle East
๐ Learn More
Looking for reliable hexagonal countersunk bolts to ensure strong, flush mounting in your mechanical and structural applications?
๐ Visit our product page here to view detailed specifications and place your order directly with the factory.
๐ฉ Contact Us Today
Get in touch for technical drawings, CAD support, free consultation, and factory-direct quotations to support your construction, machinery, automotive, and precision engineering projects.