The Pozi Flange Self Tapping Screw is a steel fastener with a black oxide finish, designed for easy drilling and tapping into various materials. With a thread size ranging from No6 to No10 and a length ranging from 1/4" to 1 1/2", this box is suitable for a variety of industrial and commercial applications. The Pozi drive style and flange head design ensure a secure and reliable hold, making it a versatile and practical choice for fastening needs.