Torx Flange Head Bolt

Size: 8*20

Grade: 8

Material: 10b21

Finish: White zinc plating

Key Features:

1. Torx Drive:

   • The Torx drive (sometimes referred to as a six-lobe drive) features a star-shaped pattern that is designed to provide better torque transmission than traditional slotted or Phillips screw heads.
   • The six-point pattern increases the surface contact between the tool and the bolt, reducing the risk of cam-out (where the tool slips out of the bolt head during tightening), which is especially important in high-torque applications.
   • Torx bolts allow for higher torque without slipping or damaging the fastener, making them ideal for heavy-duty use, including automotive, industrial, and electronics assembly.

2. Flange Head:

   • The flange head is a type of bolt head that incorporates a flat, wide integrated washer underneath the head of the bolt. This flange increases the bearing surface area and helps distribute the load over a larger area, reducing the risk of damaging the material being fastened.
   • Flanged heads also help prevent the bolt from loosening over time, as the wider surface provides additional grip and resistance to movement, especially in applications with vibration or frequent movement.
   • The flange design also eliminates the need for an additional washer in many cases, making installation quicker and reducing the number of parts needed.

3. Material:

   • Steel: Common for general-purpose fasteners, steel Torx flange head bolts offer good strength and durability.
   • Stainless Steel: Often used in applications that require resistance to corrosion, such as in marine, food processing, or outdoor environments.
   • Alloy Steel: Used in high-strength applications, especially where the bolt will be exposed to heavy loads or harsh conditions.
   • Brass or Aluminum: Available for applications requiring non-ferrous materials, such as for electrical or lightweight assembly needs.

4. Size and Thread Type:

   • Available in a wide range of metric and imperial sizes, with common sizes such as M4, M5, M6, M8, and larger options (e.g., M10, M12).
   • Coarse and fine threads are available, depending on the application. Fine threads are often used where greater precision and a more secure hold are required.
   • The bolt length varies according to the requirements of the assembly, with the threads typically extending along the full length or part of the length of the shank.

5. Coatings and Finishes:

   • Zinc Plating: Common for corrosion resistance, zinc plating helps to protect steel bolts from rust and corrosion.
   • Black Oxide: Provides a sleek black finish, offering mild corrosion resistance and increasing wear resistance.
   • Galvanized: Often used for bolts exposed to harsh weather or environments, galvanizing offers robust protection against corrosion.
   • Phosphate Coating: Helps reduce friction and is often used in high-stress or high-wear environments.

Common Applications:

1. Automotive:

   • Torx flange head bolts are widely used in the automotive industry for securing body panels, trim, and various interior components. Their ability to withstand high torque and resist loosening due to vibrations makes them ideal for use in vehicles.
   • They are also used in critical engine components where a secure and strong connection is needed.

2. Industrial Machinery:

   • Used in heavy-duty industrial equipment, Torx flange head bolts are often used to assemble machinery where high torque is required for secure connections. The flange head helps distribute the load, reducing stress on the components being fastened.

3. Electronics:

   • In electronics and appliance manufacturing, these bolts are commonly used for securing internal components and enclosures. The Torx drive prevents tampering or unauthorized disassembly, while the flange provides a secure, stable hold for components inside sensitive devices.

4. Furniture Assembly:

   • Torx flange head bolts are often used in furniture assembly, especially for modular or flat-pack furniture, where ease of installation, load distribution, and resistance to loosening are important. The flange eliminates the need for separate washers, speeding up the assembly process.

5. Outdoor and Marine Applications:

   • In marine or outdoor environments, where bolts are exposed to moisture and other harsh conditions, stainless steel or galvanized Torx flange head bolts are used to prevent corrosion while maintaining a secure fastening.
   • These bolts are ideal for securing outdoor equipment, boat fittings, and hardware that must withstand the elements.

6. Bicycles and Motorcycles:

   • Used in bicycles and motorcycles, where secure and vibration-resistant fastenings are necessary. Torx flange head bolts are used for securing parts such as handlebars, seat posts, and trim components.

7. Construction and Infrastructure:

   • Torx flange head bolts are also used in construction and infrastructure applications, such as for securing structural components, equipment, and panels where load distribution and vibration resistance are critical.

Advantages:

1. Higher Torque and Secure Fastening: The Torx drive allows for higher torque transmission without slipping, providing a more secure fastening than traditional drives like slotted or Phillips.
2. Load Distribution: The flange head increases the bearing surface area, distributing the load evenly across the material and reducing the risk of damage.
3. Vibration Resistance: The flange helps keep the bolt securely in place, preventing loosening due to vibration or movement.
4. Ease of Installation: The flange eliminates the need for a separate washer, simplifying installation and reducing the number of components needed.
5. Tamper Resistance: The Torx drive helps prevent unauthorized removal or tampering, making these bolts ideal for high-security applications.