- Feb 15, 2015
I want to tap and drill some 2-56 holes in stainless with very little edge clearance and very little width to do so. I have enough material to hold the screw but I have a problem with countersinking the cap secrew in a aluminum plate that will attach to the stainless. See the sketch.
- How close to the edge can you get in aluminum before a clearance hole starts to tear through the side? The hole will be around #27 or 0.144.
- How close to the edge can you get in stainless for a threaded hole? I only have 0.134 wide material to work with and I need to offset slightly for the cap screw as noted in 1.