Stainless Steel Screws Hexagon Phillips Cross Flange Head Hex Bolts

high precision hand tighten 304 stainless steel factory hardware making flange face bolts for chipboard

Flange bolts, also known as flanged hex bolts or flange head bolts, are a type of bolt designed with an integral flange beneath the bolt head. The flange provides a wider bearing surface and eliminates the need for a separate washer.

Here are some key features and details about flange bolts:

1. Flange Design: Flange bolts have a built-in flange or washer-like structure beneath the bolt head. The flange is typically circular and wider than the diameter of the bolt shank. It acts as a flat load-bearing surface and helps distribute the load over a larger area.

2. Hex Head: Flange bolts have a hexagonal (six-sided) head, which allows for easy tightening or loosening using a standard wrench or socket. The head is typically larger than the bolt's diameter to accommodate the flange.

3. Threaded Shank: Flange bolts have a threaded shank that allows them to be inserted into a pre-tapped hole or nut. The shank can have various thread types, such as coarse or fine threads, depending on the specific application requirements.

4. Material and Finishes: Flange bolts are available in various materials, including carbon steel, stainless steel, and alloy steel. The choice of material depends on factors such as strength requirements, corrosion resistance, and environmental conditions. They can also be coated or plated with finishes like zinc, galvanized coating, or other corrosion-resistant coatings for enhanced durability.

5. Applications: Flange bolts are commonly used in applications where a wide load-bearing surface, combined with the convenience of a built-in washer, is required. They are often used in automotive, construction, machinery, and other industries where strong and secure fastening is necessary.

6. Installation: Flange bolts are installed by inserting the threaded shank into a pre-tapped hole or through a nut, and then tightening the bolt using a wrench or socket. The flange provides stability during installation and prevents the bolt from sinking into the material.