Sutton C105STF1 4 Piece 90° Three Flute Countersink Set - HSS

The Sutton C105STF1 is a 4 piece set of 90° three flute countersinks in HSS, with 4-10, 4-14, 5-20 and 6-28 mm ranges: item numbers C105 0901, C105 0902, C105 0903 and C105 0904.

The three flute design is for machine use on most materials including plastics, non-ferrous and ferrous metals. The bright finish suits general purpose use. Each size in the set is also available individually.

Where this product is used

• Countersinking and chamfering screw holes across the four sizes in the set.
• Machine use on most materials including plastics, non-ferrous and ferrous metals.

What is in the set

The 4 sizes in the set, with the item number of each size when bought individually.

Using the tool

• Match the countersink to the screw head so the head sits flush with the surface.
• Use a low to moderate speed, and go lower on harder materials and larger diameters.
• Use cutting fluid when working steel or stainless steel.
• Hold the work firmly and keep the tool steady to reduce chatter.

Key specifications

Related products

Individual sizes: the C105 range. Browse all countersink bit sets and deburring tools.