Standard Pack = 1 piece(s). Tap Size = 1/4 inch ; TPI / Pitch = 28 ; Tap Style = Spiral Point ; Thread Limit = H4 ; Chamfer = 3.5P-4.5P ; Flutes = 3 ; Material = VC-10 ; Coating = V ; Overall Length = 150 mm ; Thread Length = 17.9 mm ; Neck Length = 16.1mm ; Tapping Depth = 34mm ; Shank Diameter = 0.255 inch ; Square Size = 0.191 inch ; Coolant Thru = No ; Class of Fit = 2B ; Length = 6.2 ; Width = 0.45 ; Height = 0.3 ;