Countersunk hexagon socket bolts, also known as flat head Allen bolts or socket countersunk screws, are essential fasteners designed for flush mounting applications where a smooth surface finish and secure fastening are required. These bolts feature a conical flat head with an internal hex drive, ensuring strong torque transmission and an aesthetically clean assembly.
๐ฉ What are Countersunk Hexagon Socket Bolts?
Countersunk hexagon socket bolts are threaded fasteners with:
- Flat countersunk head that sits flush with the surface
- Hexagon socket drive (Allen drive) for easy torque tightening
- Manufactured according to DIN 7991 / ISO 10642 standards
They are ideal for projects demanding precision alignment, strong clamping force, and a snag-free finish.
โ Key Specifications
- Sizes Available: M3, M4, M5, M6, M8, M10, M12, M16, M20
- Lengths: 6mm to 100mm (custom lengths available)
- Material Options: Stainless steel 304 / 316, alloy steel grade 10.9 / 12.9, titanium grade 2 / grade 5, carbon steel
- Surface Finishes: Plain, zinc plated, black oxide, hot-dip galvanized, anodized titanium
- Thread Standards: Metric coarse / fine, UNC, UNF
โ๏ธ Applications of Countersunk Hexagon Socket Bolts
โ Construction steel structures โ beams, columns, and frames
โ Heavy machinery assembly โ machine bases, brackets, covers
โ Automotive industry โ underbody panels, engine components
โ Aerospace and marine โ structural fittings, corrosion-resistant joints
โ Electronics and robotics โ flush fastening of enclosures and frames
โ Bicycle and sports equipment โ lightweight, aesthetic fastenings
๐ง Advantages of Choosing Our Countersunk Hexagon Socket Bolts
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Flush mounting design ensures safety and smooth finishes
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Hex socket drive provides strong torque application without head deformation
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Wide size range to suit light duty to heavy structural fastening
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High tensile strength with reliable load-bearing capability
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Corrosion-resistant materials and finishes for various environments
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Custom lengths, threading, and surface treatments available
๐ฆ Packaging & Supply Details
- MOQ: 500 pcs per size
- Packaging: Bulk cartons with pallets / small boxes with labels / OEM packaging
- Lead Time: 5โ15 working days depending on order size and material
- Customization: Logo engraving, special finishes, and kitting services
๐ก Why Choose Our Countersunk Hexagon Socket Bolts?
As a professional countersunk hexagon socket bolt manufacturer and supplier, we provide:
โ Strict quality control from raw material sourcing to final inspection
โ Competitive factory pricing and stable supply
โ OEM & ODM services for distributors, construction, and machinery projects
โ Export experience to Europe, North America, Southeast Asia, and the Middle East
๐ Learn More
Looking for precision countersunk hexagon socket bolts to ensure secure and clean assemblies in your projects?
๐ Visit our product page here to view detailed specifications, material options, and place your order with confidence.
๐ฉ Contact Us Today
Get in touch for technical drawings, free consultation, and factory-direct quotations to support your engineering and construction needs.