Hex Head Class 3 Screw with Washer 12g 40mm

Hex washer head type 17 galvanised, 12g, with 11 threads per inch, full thread, 40mm screw with neoprene washer. For fixing to timber. The length is measured from the underside of the head. Class 3 finish to AS3566. Use with a 5/16ths nut setter driver bit such as these.