Carriage Bolt; cup square hex, 20mm mushroom head, BZP finish (Bright Zinc Plate). Designed for bolting through timber.
Square hex refers to the square section attached to the mushroom head, this sinks into timber and stops the bolt from spinning when the nut is tightened.
Supplied with one standard hex nut, washers sold separately.
A self tapping bolt suitable for concrete, stone, brick, marble, wood and block (solid or hollow). Safe anchorage achieved without the need of high tightening forces. Can be removed and re-fixed into the same hole, providing the thread is correctly aligned. No expansion forces enables close to the edge fixing.
Drill Bit Dia. - 8mm Anchor Length - 130mm Washer Size - 10mm (M10) Min Hole Depth - 55mm Min Over Drill Depth - 15mm Min. Embed Depth - 40mm Max. Fixture Thickness - 90mm Drill Bit Dia. for clearance - 10mm (to prevent binding when tightening bolt) Head Type - Hex Head, 15mm (Across Flats) Driver Type - Impact driver, socket, spanner Max Tightening Torque - 40Nm