Product Details

This product is a national standard Q235 carbon steel flat-head washer, also known as a flat washer. It is a core component for fastening bolts and studs in steel structures. Featuring an enlarged and thickened design for increased pressure resistance, it is an essential accessory for steel structure fastening. The product is made from high-quality carbon steel through multiple processes including precision stamping, polishing, galvanizing for corrosion protection, and dimensional inspection. It boasts a precise inner diameter, regular outer diameter, smooth surface without burrs, and flat edges without curling. The thickened design effectively distributes the tightening pressure of the bolt, preventing scratches or indentations on the steel component surface by the bolt head, while increasing the stress area for a more secure bolt tightening. The surface is electro-galvanized for corrosion protection, providing excellent rust resistance. It is suitable for various indoor and outdoor steel structures, equipment installation, and bolt tightening applications. Each batch undergoes dimensional tolerance and flatness testing, ensuring stable quality and a complete range of specifications. It is an essential component for steel structure engineering and hardware assembly.

Core Technical Parameters

Material: Q235 high-quality carbon steel
Surface Treatment: Electro-galvanized
Specifications: Φ6 Φ8 Φ10 Φ12 Φ16 Φ20 Φ24 Φ30 (Regular stock available, thin/thick versions optional)
Testing Standards: Dimensional tolerances, flatness, and thickness all meet the requirements of national standard GB/T 97.1

Core Application Scenarios

Steel structure bolt fastening, steel component connection pressure-bearing gaskets, equipment frame mounting gaskets, door and window steel structure frame fixing, photovoltaic bracket matching gaskets, lightweight steel structure splicing protection

Compatible Standards & Recommended Accessories

Execution Standard: National Standard GB/T 97.1
Recommended Accessories: 8.8/10.9 grade steel structure bolts, hexagonal nuts (essential accessories for bolt fastening, one-stop shop for complete accessories)