Standard Pack = 1 piece(s). Tap Size = Number1 ; TPI / Pitch = 64 ; Tap Style = Spiral Point ; Thread Type = UNC ; Thread Limit = H2 ; Chamfer = 1.5P - 2P ; Flutes = 2 ; Material = HSS ; Coating = BRIGHT ; Overall Length = 1-11/16 inch ; Thread Length = 3/8 inch ; Shank Diameter = 0.141 inch ; Square Size = 0.110 inch ; Coolant Thru = No ; Length = 2.4 ; Width = 0.4 ; Height = 0.3 ;