Thread Size: #4-40; Thread Pitch: 40 threads per inch; Screw Length (includes the head part): 3/4 inch
Package: 100 pcs; Drive Size: No.1, #1
Head Diameter:0.19 inch (min)--0.21 inch (max); Head Height: 0.067 inch
Material: 304 Stainless Steel 18-8 that you will probably see in your pans and cookery tools. It's used for a wide variety of home and commercial applications. Because of its slightly higher strength and wear resistance than type 316, it's also used for nuts, bolts, screws and other fasteners.