Hex bolts are bolts with a hexagonal or six sided head.  

Hex bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. Hex bolts with forged heads are also commonly used as headed anchor bolts.

Size: M6-M42,

       other diameters are available upon request

Length: as per size

Thread type: right thread, metric thread

Thread length: half thread

Material: steel

Grade: 4.8/6.8/8.8/10.9/12.9

Finish: plain/black oil/zinc plated/hot dip galvanized (HDG),

          other surface treatment are available upon request

Technical info: DIN 931