Natural Nylon Binding Head Slotted Machine Screws, FT, 10-32 Thread Size x 1/2" Length Natural Nylon Binding Head Slotted Machine Screws, FT, 10-32 Thread Size x .500" Length, 200 Pcs Head Diameter .399", Head Height .123". Temperature Range -40° to 185° F. Length is measured from under the head.