5/16" x 7/64" Countersink


14 in stock (can be backordered)


Fuller  #C4 Type “C” four flute countersink.  Used to countersink and counterbore for heads of screws in woods, plastics and non-ferrous materials. Heat treated for long tool life.

The countersink is held in place with two hex-socket screws and is easily adjustable up and down the drill so only one countersink and length of drill is required for one screw size.

Cutting diameter 5/16″, drill  hole size 7/64″, overall length 7/8″.

Priced and sold individually.


Additional information

Weight 0.02 lbs