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In addition to the standard dimensions, DIN 20921 washers are also available in different materials and finishes to meet specific application requirements. These washers are commonly made from materials such as stainless steel, carbon steel, and brass, which offer different levels of strength, corrosion resistance, and durability. The finishes of DIN 20921 washers can also vary, including plain, zinc-plated, and hot-dipped galvanized finishes.

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HEBEI YUETONG FASTENERS 3 4 stainless steel threaded rod

In addition to their strength, 18mm anchor bolts are also easy to install and require minimal maintenance. To install these bolts, a hole is drilled into the base material, and the bolt is inserted into the hole. As the nut is tightened, the bolt expands and creates a tight grip on the surrounding material, forming a secure connection. Once in place, anchor bolts are designed to remain in position for an extended period without the need for adjustments or replacements.

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HEBEI YUETONG FASTENERS 3 4 stainless steel threaded rod