Six-lobe Countersunk Head Bolt

Size: 6*26

Grade: 10

Material: 10b21

Finish: Black, Heat treatment

Key Features:

1. Six-Lobe Drive:

   • The six-lobe drive (also known as Torx) provides superior grip between the tool and fastener, allowing for high torque transmission without slipping or stripping the bolt head.
   • This design is especially beneficial in high-torque applications, reducing the likelihood of cam-out (slippage of the tool from the fastener) and offering more secure fastening than traditional drives like slotted or Phillips.

2. Countersunk Head:

   • The countersunk head has an angled shape designed to sit flush with the surface of the material once installed. This makes it ideal for applications where a smooth, flat surface is required or where a low-profile fastener is needed.
   • The countersunk design helps prevent the bolt from catching or snagging on surrounding materials, making it useful for areas with tight clearances or for aesthetic purposes.
   • It also allows for more secure fastening, as the angled head helps distribute the load more evenly across the surface.

3. Material:

   • Steel: Standard material for general-purpose fasteners, offering durability and strength.
   • Stainless Steel: Ideal for corrosion-resistant applications, such as in outdoor, marine, or food processing environments.
   • Alloy Steel: Used for high-strength applications, such as heavy machinery or automotive uses, where additional strength is needed.
   • Brass or Aluminum: For lightweight or non-corrosive applications, such as electronics, or in areas requiring electrical conductivity.

4. Size and Thread Type:

   • These bolts are available in metric and imperial sizes, ranging from small M3 or M4 bolts to larger sizes (e.g., M6, M8, M10).
   • The threads can be coarse or fine, depending on the application's load-bearing requirements.
   • Lengths vary, providing options for shallow or deeper fastenings, depending on the material thickness.

5. Coatings and Finishes:

   • Zinc Plating: Provides corrosion resistance and a shiny finish, commonly used in general applications.
   • Black Oxide: Offers mild corrosion protection and a sleek black finish, often used for aesthetic purposes or in machinery.
   • Galvanized: Used in outdoor or harsh conditions, providing enhanced protection against rust and corrosion.
   • Phosphate Coating: Often applied in industrial applications for wear resistance and reducing friction.

Common Applications:

1. Electronics:

   • These bolts are commonly used in electronics where a flush, low-profile fastener is needed to secure internal components or enclosures. The six-lobe drive prevents tampering and ensures that the assembly is secure.

2. Automotive:

   • In the automotive industry, countersunk bolts are often used for securing trim pieces or panels that need to remain flush with the vehicle's body or chassis. The six-lobe drive ensures a secure, high-torque fastening in areas where standard screws might slip.

3. Furniture:

   • Furniture assembly often utilizes countersunk bolts, especially for modern or flat-pack furniture, where flush installation is necessary for aesthetics or functionality.

4. Aircraft and Aerospace:

   • In aerospace, where both strength and a low-profile finish are crucial, these bolts are used to secure panels or interior components in tight spaces.

5. Machinery:

   • These bolts are also found in machinery where vibration resistance and secure fastening are necessary, especially in equipment with tight tolerances or where surface smoothness is a concern.

6. Marine Applications:

   • Marine applications use stainless steel six-lobe countersunk bolts for securing parts like boat fittings, where corrosion resistance and a flush fit are required.

Advantages:

1. High Torque Capability: The six-lobe drive allows for more efficient torque transfer without slipping, ensuring a secure, tight fit.
2. Flush Finish: The countersunk head allows for a low-profile, flush installation, making the fastener ideal for applications where a smooth, unobtrusive surface is needed.
3. Tamper Resistance: The six-lobe drive reduces the risk of tampering or unauthorized removal, making the bolt ideal for secure, high-torque applications.
4. Aesthetic Appeal: The flush installation provides a clean, sleek appearance, ideal for use in consumer products, furniture, or automotive applications where appearance matters.
5. Load Distribution: The countersunk shape helps distribute the load over a larger area, reducing stress on the material being fastened.