







Cross recessed bolt, also known as the cross groove recessed hexagonal head bolt, is a bolt that boasts a unique and distinctive groove shape coupled with a head design that's built for efficiency. Below is a comprehensive overview of the cross recessed bolt:
1, Basic structure
• Head: Featuring a hexagonal head, the cross recessed bolt allows for effortless tightening or loosening with the use of a socket, making it a convenient choice for various applications.
• Slot shape: At the heart of the bolt head lies a cross-shaped recess purpose-built to accommodate a Phillips screwdriver or a specialized tool, facilitating seamless rotational operations.
2, Characteristics and advantages
Effortless installation and disassembly: The innovative cross groove design empowers users to swiftly tighten or loosen the bolts using a cross screwdriver, thereby significantly enhancing work efficiency.
Enhanced stability: The thoughtfully crafted hexagonal head design enlarges the contact area between the bolt and the workpiece, offering superior stability and ensuring a secure connection.
Versatile applicability: Cross recessed bolts are a staple in the realms of mechanical equipment, automobiles, aerospace, and beyond, perfectly suited for a myriad of connection scenarios demanding disassembly and adjustment.
3, Specifications and materials
Specification: The cross recessed bolts come in a diverse range of specifications, with nominal diameters typically spanning from M1 to M16, and nominal lengths tailored to specific requirements, ensuring versatility.
Material: Available in an array of materials, including stainless steel, carbon steel, and high-strength alloy steel. Stainless steel is lauded for its exemplary corrosion resistance, ideal for damp or corrosive settings; carbon steel is cost-effective though susceptible to rust, suited for dry conditions; high-strength alloy steel stands out with its superior strength and wear resistance.
4, Surface treatment
To elevate both the corrosion resistance and visual appeal of bolts, cross recessed bolts are often treated with surface finishes such as galvanizing, nickel plating, or blackening. Eco-friendly electroplating options like colored zinc and blue zinc are swiftly gaining traction in the market.
5, Precautions for use
• Choose appropriate tools: When dealing with cross recessed bolts, it is crucial to select the right cross screwdriver or specialized tool to prevent damage from using tools that are ill-fitting, whether too large or too small.
• Control force: Exercise caution by properly controlling the force applied when tightening bolts, to prevent bolt breakage or damage to the workpiece.
Regular inspection: Regularly scrutinize the condition of cross recessed bolts in long-term use. If any damage or looseness is detected, they should be replaced or tightened promptly to maintain safety.
6, Related standards and testing
The creation and rigorous testing of cross recessed bolts adhere to pertinent national or industry standards, such as GB/T 9074.13. These standards meticulously outline requirements for appearance, size, mechanical properties, and more, along with detailed testing methodologies and specifications.
In summary, the cross recessed bolt is a remarkably compact, user-friendly fastener that promises easy installation and disassembly while ensuring stability. Widely utilized across diverse mechanical equipment and connection scenarios, it is vital to select suitable tools and manage force carefully, along with conducting regular inspections to uphold safety and dependability.