Greenfield Threading Vermont Tap and Die® Spiral Point Machine Tap, Standard, Series: SPGP, Ground/UNC Thread Standard, #10-24 Thread, Plug Chamfer, 2 Flutes, HSS, Bright, Class of Fit: 2B, Right Hand Cutting Direction, 1/2 in Thread Length, 2.38 in Overall Length, 0.194 in Shank Diameter, 1/4 in Shank Length, Steel and Non-Ferrous Materials Material Application, H3 Thread Limit