Countersunk anchor bolts are specialized fastening solutions featuring a flat countersunk head designed for flush embedding into concrete, masonry, or structural steel surfaces. These flat head anchor bolts provide a neat, snag-free finish, improving both aesthetics and safety in construction, industrial installations, and architectural projects.
๐ฉ What is a Countersunk Anchor Bolt?
A countersunk anchor bolt combines the reliable anchoring strength of an expansion or chemical anchor with a flat countersunk head for flush surface mounting. It features:
- Head Type: Flat countersunk for flush installation
- Material Options: Carbon steel, stainless steel (304, 316), alloy steel
- Diameter Range: M6, M8, M10, M12, M16, M20, M24
- Lengths: From 40mm to 300mm or customized per structural design
- Thread Types: Metric coarse as standard, customized threads available
- Standards: DIN, ISO, ASTM anchor bolt specifications combined with countersunk head design
These countersunk concrete anchor bolts are ideal where surfaces need to remain smooth and bolt heads hidden after installation.

โ Key Specifications
- Diameter Range: M6 โ M24
- Material Options:
- Carbon Steel: high tensile expansion anchors for structural steel connections
- Stainless Steel 304 / 316: corrosion resistance for outdoor, marine, and chemical environments
- Alloy Steel: heavy-duty applications with high shear and tensile requirements
- Surface Treatments: Zinc plated, hot-dip galvanized, plain, black oxide
- Head Types: Flat countersunk, hex socket countersunk, Torx countersunk available
โ๏ธ Applications of Countersunk Concrete Anchor Bolts
โ Structural steel mounting โ ensures flush bolt heads in beams and columns
โ Concrete anchoring โ expansion or chemical anchors with countersunk heads for smooth surfaces
โ Architectural installations โ handrails, brackets, and fittings needing aesthetic finish
โ Machine and equipment base fixing โ flat head avoids obstruction in equipment mounting areas
โ Marine and offshore structures โ stainless steel countersunk anchors for corrosion resistance and flush finishes
๐ง Advantages of Choosing Our Flat Head Anchor Bolts
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Flush installation enhances safety and aesthetics
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High load capacity with robust anchoring performance
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Wide material options to suit diverse environmental conditions
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Precision manufacturing ensures dimensional accuracy and ease of installation
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OEM & ODM customization for head style, length, material grade, and surface finish

๐ฆ Packaging & Supply Details
- MOQ: 500 pcs per size
- Packaging: Bulk cartons with pallets / small boxes with labels / OEM branded packaging
- Lead Time: 7โ20 working days based on order size and customization
- Customization: Diameter, overall length, head type, threading, coating, branding
๐ก Why Choose Our Countersunk Anchor Bolts?
As a professional countersunk anchor bolt manufacturer and supplier, we provide:
โ Strict quality control covering raw material selection, forging, machining, threading, and surface treatment
โ Competitive factory pricing with stable long-term supply
โ OEM & ODM services for construction companies, structural steel fabricators, and fastener distributors
โ Export experience to Europe, North America, Southeast Asia, and the Middle East
๐ Learn More
Looking for reliable countersunk concrete anchor bolts to achieve strong structural fastening with a flush finish?
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 structural, concrete anchoring, and architectural projects.