A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. NOTE: Nuts included and markings visible on the domed head. Fully threaded up to and including 150mm, partially threaded thereafter. Manufactured from grade 4.8 carbon steel" Thread Dia. mm: M6 Length mm: 30 Thread Length mm: N/A Thread Type: Metric Head Type: Dome Head Dia. mm: 16.00 Finish: Zinc Material: Carbon Steel Timco Carriage Bolts & Hex Nuts - Zinc (Size M6 x 30 - 200 Pieces) in Silver