Type：100 PCS #8 x 1/2" Flat Head Sheet Metal Screws or Wood ScrewsDriver System: Phillips Drive #2 Thread Size: #8; Screw Length: 1/2 inch or 13mm (including the height of the head) Point Style: The sharp, self tapping thread and piercing tip redefines efficiency; Designed to cut through metal, plastic or wood with minimal effort; The countersunk design sits flush with the surface, delivering a smooth, professional finish free of protruding edges Made of 304 stainless steel 18-8 (no coating outside) which is superior to regular steel and any zinc plated fasteners, provides good strength and corrosion resistance in bad environments Available in multiple lengths and thread diameters to accommodate everything from delicate trim work to heavy timber construction; Perfect for indoor and outdoor projects includes furniture assembly, electronics, automotive, architectural, DIY craft and more Flat head sheet metal screw has a flat top that tapers down to a cone shape at an 82 degree and will sit flush into a countersunk hole giving a finished appearance. They are ideal use for wood, metal or other tough materials and known for their effecient application performance and endurance. You could see them around because they are widely used in a variety of industries such as construction, manufacturing, engineering, assembling and so on. The high quality 304 (18-8) stainless steel provide perfect strength and good corrosion resistance in bad environments like high temperature, cold weather and high humidity areas without the need for time consuming and costly maintenance.