Hex Bolt Application. Rock bolt used in tunnel construction to stabilize walls. This has a hex shaped head that allows for easy manipulation while tightening or loosening the fastening.
The earliest bolt heads in use were the square heads. The most common type of bolt head types includes square hex slotted hex washer and socket cap. The most common stainless steel for general hardware use.
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They are commonly used for machinery and construction projects both residential and commercial. This has a hex shaped head that allows for easy manipulation while tightening or loosening the fastening. Rock bolt used in tunnel construction to stabilize walls. Preparation for the insertion and installation of the machine bolt requires a pre drilled or pre taped hole.