M.A. Ford 79T000013 Chatterless Single End Straight Shank Countersink Set, 1/4 in Min Head Diameter, 1 in Max Head Diameter, 90 deg Max Included Angle, 6 Flutes, 4 Pieces, HSS, TiN Coated

M.A. Ford Countersink Set, Chatterless Single End Straight Shank, Series: 79T, 1/4 in Minimum Head Diameter, 1 in Maximum Head Diameter, 90 deg Maximum Included Angle, 6 Flutes, 4 Piece, HSS, TiN Coated

All M.A. Ford HSS countersinks are heat treated in an electronically controlled vacuum furnace. This assures precise hardening and eliminates the possibility of decarburization. All heat treating is done in our own facilities for maximum control and assurance of desired hardness and toughness. Most M.A. Ford HSS countersinks receive an additional heat treat process known as the steam Homogeneous process. This process is like a final tempering, relieving internal grinding stresses. The result is a much tougher cutting edge that stays sharper, longer. Additionally, the steam Homogeneous process provides a tough, hard, porous oxide film on the tool that is sufficient enough to retain cutting oil, further reducing frictional heat and extending tool life.