Combintation Drill/Countersinks HSS Bell Type 60° Included Bright

Combintation Drill/Countersinks HSS Bell Type 60° Included Bright
Combintation Drill/Countersinks HSS Bell Type 60° Included Bright

 These “radius” combination drills and countersinks are designed to reduce the bearing surface of the center hole and provide a protected centering seat while reducing the risk of breakage.

  • Secondary angle to protect the bearing surface
  • 60 degree face angle for machining "on centers"
  • High Speed  Steel Bright Finish

Parts requiring turning on a lathe or cylindrical grinding are drilled with a combined drill/countersink to provide a seat or bearing surface for machining centers. When the parts machined pass through numerous operations, the protected center is accomplished by using a bell type countersink.