Thread Mill Straight Flute Internal Threads - Thread Size 1/8 Pitch 27 End Mill Material Carbide Flutes 4 Length of Cut 0.758 In. Overall Length 3-1/2 In. Uncoated Shank Dia 3/8 In. Thread Type NPTF Dryseal Nomenclature - For Use With - Application For Use On Aluminum Brass Copper Plastic And Cast Iron