Custom-Knives.Com

Counterbores


#874 is for Socket and Fillister head screws. I have two for 1-72 screws. I have three for 0-80 screws. The bottom left one is used, I didn't want to remove the protective cover to photograph them.
 
#875 has a 82 degree angle for Flat head screws. I have seven of these, they are all for 0-80 screws.

MSC stopped selling these around 4 or 5 years ago. $25.00 each

 

 

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