Hexagon socket bolts are also called cylindrical head hexagon socket bolts and hexagon socket screws. Commonly used levels are 4.8, 8.8, 10.9, and 12.9. Hexagon socket bolts are generally selected for grade 8.8, 10.9 and 12.9 when used on aluminum profiles, and the material is mostly carbon steel. However, in order to meet market demand, some hexagon socket bolts will be made of stainless steel 302 and stainless steel 304 or stainless steel 316 to order.
There are many sizes of hexagon socket bolts. Common specifications are 3*8, 3*10, 3*12, 3*16, 3*20, 3*25, 3*30, 3*45, 4*8, 4* 10, 4*12, 4*16, 4*20, 4*25, 4*30, 4*35, 4*45, 5*10, 5*12, 5*16, 5*20, 5*25, 6*12, 6*14, 6*16, 6*25, 8*14, 8*16, 8*20, 8*25, 8*30, 8*35, 8*40 and so on. The hexagon socket bolts used on industrial aluminum profiles are generally 4*20, 4*25, 4*30, 4*35, 4*455*16, 5*20, 5*25, 6*12, 6*16 , 6*25, 8*30, 8*35, 8*40 and so on. Because it needs to be used in conjunction with the groove width of the aluminum profile or the nut, these types are more used on the aluminum profile frame.
The application of hexagon socket bolts in the aluminum profile frame is mainly to connect the profile and the plate or the profile and the profile, which is very strong. Now tap the threaded hole in the fixed position of the aluminum profile, place the bolt and then install the matching nut.