ANSI 18.22.1 is the U.S. standard for flat washers and covers two general types of flat washers, known as Type A and Type B. These washers are typically used in conjunction with bolts, screws, or nuts to increase the contact area of the connected parts, reduce pressure concentrations, prevent the surfaces of the parts from being pressed through or worn, and also to help prevent loosening of the fasteners.

Carbon Steel: Typically used for general applications.

Stainless Steel: For environments where corrosion resistance is required.

Alloy Steels: Used in applications requiring high strength or high temperature resistance.

Advantage:

Standardized Manufacturing: ANSI 18.22.1 provides detailed dimensional and tolerance requirements to ensure consistency and interchangeability of washers. Material Versatility: These washers can be made from a variety of materials, such as carbon steel, stainless steel, etc., to suit different application environments and corrosion resistance needs. Surface treatment: The surface of the washers may be galvanized, nickel plated or otherwise treated to improve corrosion and wear resistance.

Scope of Application

Machine building: In machine and equipment building, for fixing and adjusting machine parts such as bearings, gears and motors. Construction industry: In building and civil engineering, they are used to connect beams, columns and other structural components, providing a stable and reliable connection. Chemical industry: in the construction of chemical plants, these washers are used to connect and secure equipment such as pipes, pressure vessels and heat exchangers due to their good corrosion resistance. Automotive industry: In automotive manufacturing, they are used to connect automotive components such as chassis and body fixings.