Screw Type: 100 PCS x #8 x 1/2" Hex Washer Head Self Drilling Screws/ Sheet Metal Tek Screws
Thread Dia: 4.2 mm; Thread Legnth: 1/2 inch (measured from under the head)
Material: Made of 410 Stainless Steel with black coating outside, provides better strength and corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance
Hex Drive: 7.0 mm; Flange Dia (max): 8.8 mm
Ideal use for wood, metal or other tough materials and known for their effecient application performance and endurance