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: M6 Length mm: 40 Head Type: Dome Head Dia. mm: 14.0 Recess Type: Cross Point Type: B Point Finish: Zinc Material: Carbon Steel Timco Roofing Bolts & Square Nuts - Zinc (Size M6 x 40 - 110 Pieces) in Silver