ROBERT CHARLES COUNTERSUNK 5855 1/8 X 120 DEG

M35-HSS-E 5% Cobalt 3 fluted Piloted Countersink HSS with 5% Cobalt for longer tool life Fixed pilot helps to produce a concentric countersink Used to prepare holes for screws or rivets Available in different angles to suit a multitude of screws and rivets Precision ground to ISO 9001 Industries: Aerospace, automotive and general engineering 3/16" Shank diameter on 2.5mm to 6.0mm pilot diameter countersinks 3/8" Shank diameter on 8.0mm to 12.0mm pilot diameter countersinks Overall length on all countersinks 1-3/4" Pilot diameter tolerance = -0.0005"  -0.0015" Additional sizes and angles are available on request