Manufactured with a large flat head, which distributes the load across the fixing to increase the clamping effectiveness. Making it ideal for clamping thin sheet metal, plastic and wood. Thread Dia. mm: M5 Length mm: 12 Head Type: Dome Head Dia. mm: 12.0 Recess Type: Cross Point Type: B Point Finish: Zinc Material: Carbon Steel Timco Roofing Bolts with Square Nuts - Zinc (Size M5 x 12 - 200 Pieces) in Silver