Double Thread Hex Washer Head Self Drilling Screw

Jinrun is a factory of double thread hex washer head self drilling screw in China. The company has professional technical equipment and technical personnel. The customized double thread hex washer head self drilling screwl is also a non-standard product, showing a double thread style in the rod part. The common sizes are 6.3/5.5 and 5.5/5.5 threads. It means that it can be two threads of different sizes or two threads of the same size. It can be applied to special steel plates and has special fastening effect, There are free samples available at cheap prices and also quality products that can be customized.