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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.


๐Ÿ”ฉ 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.

Side profile of M6 countersunk hex socket bolt made from A2 stainless steel
Side view highlighting the smooth countersunk head and strong threading of the bolt

โœ… 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

โš™๏ธ Applications of Countersunk Concrete Anchor Bolts

โœ” Structural steel mounting โ€“ ensures flush bolt heads in beams and columns
โœ” Concrete anchoring โ€“ expansion or chemical anchors with countersunk heads for smooth surfaces
โœ” Architectural installations โ€“ handrails, brackets, and fittings needing aesthetic finish
โœ” Machine and equipment base fixing โ€“ flat head avoids obstruction in equipment mounting areas
โœ” Marine and offshore structures โ€“ stainless steel countersunk anchors for corrosion resistance and flush finishes


๐Ÿ”ง Advantages of Choosing Our Flat Head Anchor Bolts

โœ… Flush installation enhances safety and aesthetics
โœ… High load capacity with robust anchoring performance
โœ… Wide material options to suit diverse environmental conditions
โœ… Precision manufacturing ensures dimensional accuracy and ease of installation
โœ… OEM & ODM customization for head style, length, material grade, and surface finish

Detailed close-up of the threaded section of M6 stainless steel countersunk hex socket bolt
Thread pattern and finish of the M6 countersunk hex socket bolt ensuring secure fastening

๐Ÿ“ฆ Packaging & Supply Details

  • MOQ: 500 pcs per size
  • Packaging: Bulk cartons with pallets / small boxes with labels / OEM branded packaging
  • Lead Time: 7โ€“20 working days based on order size and customization
  • Customization: Diameter, overall length, head type, threading, coating, branding

๐Ÿ’ก Why Choose Our Countersunk Anchor Bolts?

As a professional countersunk anchor bolt manufacturer and supplier, we provide:

โœ” Strict quality control covering raw material selection, forging, machining, threading, and surface treatment
โœ” Competitive factory pricing with stable long-term supply
โœ” OEM & ODM services for construction companies, structural steel fabricators, and fastener distributors
โœ” Export experience to Europe, North America, Southeast Asia, and the Middle East


๐Ÿ”— Learn More

Looking for reliable countersunk concrete anchor bolts to achieve strong structural fastening with a flush finish?

๐Ÿ‘‰ Visit our product page here to view detailed specifications and place your order directly with the factory.


๐Ÿ“ฉ 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.