Home » Product » Heavy Hex Nut A563 Grade A Zinc

Heavy Hex Nut A563 Grade A Zinc

From: $0.11

BoltCraft’s Heavy Hex Nut A563 Grade A Zinc is engineered for robust applications, offering enhanced durability and corrosion resistance suitable for low-carbon heavy hex bolts in various industrial settings.


$50 minimum order


  • Designed for strength and reliability, BoltCraft’s Heavy Hex Nuts are manufactured to meet A563 Grade A specifications, ensuring compatibility with low-carbon heavy hex bolts. The zinc coating enhances corrosion resistance, making these nuts ideal for both indoor and outdoor applications.

Applications & Advantages

  • Ideal for structural, mechanical, and construction applications where a robust nut is required to ensure joint integrity.
  • The zinc plating provides an additional layer of corrosion resistance, making it suitable for use in a variety of environments.

Material & Specifications

  • These nuts are made from steel conforming to specific chemical composition requirements, with a maximum carbon content of 0.55% and controlled levels of phosphorus and sulfur to ensure strength and ductility.
  • The A563 Grade A specification denotes suitability for use with low-carbon heavy hex bolts, ensuring a reliable and secure fastening solution.

Hardness & Durability

  • The nuts are designed to achieve a hardness level within the Rockwell B68 – C32 range, offering a balance between strength and ductility for versatile applications.
  • The thicker and wider design compared to standard hex nuts provides a greater length of thread engagement and resistance to dilation, enhancing the overall durability of the assembly.

Proof Load & Finish

  • With a proof load suitable for low-carbon heavy hex bolt applications, these nuts ensure a secure fastening solution capable of withstanding significant stress and load.
  • The zinc coating not only provides an added layer of protection against corrosion but also ensures longevity and reliability in a wide range of environmental conditions.
Please Leave us a Message

Have a Question or Comment?

Talk to us.

Enter your details in the form or give us a call on +1-855-330-2210 and one of our experienced team members will get back to you for a no obligation chat.