Product Description The square gasket is a square metal sheet that expands the contact surface between the nut and the connected part. It is widely used in construction sites, machinery and industrial equipment and other related scenes. It can play a limited role in shock absorption and buffer to protect the safety of equipment. Product Characteristics -0.18 Inch/ 5mm thickness, it is hard and thick that not easy to deform -Widely used in construction sites, machinery and industrial equipment and other related scenarios, with a wide range of applications -Carbon steel material with galvanized surface, it is not easy to corrode so it has long service life and high cost performance -Square washer disperses the pressure of surface to protect the connecting surface, and prevent the nut from loosening, which is highly protective -Slow down the impact of equipment vibration on the nut, play a buffering role, and prevent the nut from loosening Product specification Inner diameter x Length x Width x Thickness: 1/2 X 2 X 2 X 3/16 Inch( M12*50*50*5mm) Material: carbon steel with galvanized cover. (High cost-effective Product, anti-rust, but the gasket outlook is not smooth than 304 stainless material Packing list: 50pcs