Custom 18-8 stainless steel u bolts we supply include square, round, and V shaped versions with both cut and rolled threads. Most of these u bolts are made using 304 stainless steel material with no finish but every once in a while we get a request to zinc plate the parts as well. Getting custom u bolts made in 304 stainless steel is typically the fastest way to get the parts manufactured, especially when a rush option is exercised.