Which Countersunk Drill Bit To Use? (1 Viewer)

[LC_Hamma]

I need to countersink 32 holes in some 3/8" plate for a set of H1 beadlocks. The hole size is for 9/16" wheel studs & the angle of the lugnut is 60 deg. I'm not sure what bit to order from McMaster-Carr. I'm only familiar w/ the Step Saver one's:
McMaster-Carr

 

[zebrabeefj40]

Since you need a 120 degree C'Sink you're kinda stuck with the Step Saver style. I prefer the zero flute stuff if I have a choice though. They usually work with less chatter especially at the diameter you need to work with a lug nut face.

Nick

 

[brokenparts]

Did you figure out anything? I need to c'sink my flat centers on my H1 and was wondering what you came out with.

 

[zebrabeefj40]

MSC has a larger selection of 120 degree countersinks. You might wanna look there for a better tool bit.

Nick