Stainless steel bolts usually refer to steel bolts that have the ability to resist corrosion from air, water, acid, alkali salt or other media. Stainless steel bolts are generally not easy to rust and are durable, and can be used in environmental protection equipment, medical equipment, communication equipment and other fields. According to the different alloy components, the focus is on rust resistance and acid resistance. Although some steels are rust-proof, they are not necessarily acid-resistant, and acid-resistant steels are usually rust-proof. In people's daily life, the stainless steel often referred to is also austenitic stainless steel.
Stainless steel bolts and nuts are used to fasten and connect two connected parts and structures with through holes. According to the type of stainless steel bolts, it can be divided into stainless steel hexagonal head bolts, stainless steel hexagonal flange bolts, stainless steel square head bolts, round head (square neck or tenon) bolts, countersunk (square neck or tenon) bolts, T-slot bolts , Stainless steel live joint bolts, stainless steel anchor bolts and other types.
Stainless steel hexagon head bolts are the most widely used type of bolts.
Generally, bolts are partially threaded. Full-threaded bolts are mainly used for bolts with shorter nominal lengths and occasions requiring longer threads. Bolts with holes are used where bolts need to be locked. The bolts with reamed holes can accurately fix the mutual position of the connected parts, and can withstand the shear and extrusion caused by the transverse force.
The head of the stainless steel hexagonal flange bolt consists of two parts: the hexagonal head and the flange surface. The "ratio of the supporting area to the stress area" is larger than that of the ordinary hexagonal head bolt, so this bolt can withstand higher pre-tightening force. The anti-loose performance is also good, so it is widely used in automobile engines, heavy machinery and other products.