A traditional heavy duty woodscrew mainly used for timber to timber applications, attaching ironmongery to timber or into masonry with the use of a nylon plug. Pilot drill holes may be required into certain hardwoods. NOTE: Thread length is 2/3 of the overall length screw. E.G. 100mm = 60mm thread length (approx.). Thread Dia. mm: 10.0 Length mm: 80 Thread Length mm: 48 Head Type: Hex Recess Type: N/A Point Type: Sharp Driver Bit Size: N/A Finish: Zinc Material: Carbon Steel Timco Coach Screws - Hex - Zinc (Size 10.0 x 80 - 4 Pieces) in Silver