5/16-24 Pionex Form Tap, Semi-Bottom DIN 371 Standard, HSS-E-PM (PM Cobalt), H7/H8, TiCN Coated With Oil Grooves Type: Form Tap,Number of Flutes: 5,Hole Type :Blind Hole 90mm Overall Length, 8mm Shank Diameter, 35mm Threading Depth, Without Coolant Through, Chamfer Form C: 2 to 3 Lead Threads Series No. 4492, Order Code 07.9380, Guhring Part #9044920079380