There are many ways of connecting industrial aluminum profiles, and if you want to ask which connection method is firm, it is best to use hex bolts. Why is a small bolt so strong? This is because in the connection process, it is necessary to tap the thread, increase the friction, and then use the elastic fastener and the special half-round head bolt, and the connection strength is high.

The specifications of the socket head bolts respectively: M (thread size) * 6/8/10/12/16/20/25/30/35/40 (behind the Numbers for the length, the unit is mm).

M(thread) Specifications: M4/M5/M6/M8/M10/M12(general thread of corner fitting <M8), select the corresponding bolt thread according to the matching nut.

Suggestion: The length of bolt used for assembling each series of profile corner parts is as follows:

20 series (corner parts) using bolt length: 10mm.

30 series (corner parts) using bolt length: 12mm.

40 series (corner parts) use bolt length: 16mm.

Hex bolts can be used not only to connect profiles, but also to connect various accessories. When connecting accessories, it needs to be used with nuts. There is a difference between the nuts used for national and European standard profiles. For example, the European standard profile is often matched with T-nut or slider nut, and the national standard profile is often matched with T-nut or square nut.