Kevin77
Aluminum
- Joined
- Jan 5, 2006
- Location
- Sennett, NY
Well, I messed up and need your help. I tapped a 3/8-16 hole about 1/2" deep in some 303SS. The parts are about 1" square and 6" long. The hole is centered on one end, so the parts had to be stood up in the mill to be drilled. Well, some of the threads are off axis a little bit.
The hole is for a shoulder bolt, which needs to tighten up square. I guess my choice is to bore the existing hole, and install helicoils. Obviously being a little more carful with the setup this time. What I'm curious about, is the possibility of using an oversize tap to loosen up the threads, thus when the bolt tightens down, it will draw up nice to the face of the part. The original tap used was a 3/8-16 GH3.
What are your thoughts?
Thanks,
Kevin
The hole is for a shoulder bolt, which needs to tighten up square. I guess my choice is to bore the existing hole, and install helicoils. Obviously being a little more carful with the setup this time. What I'm curious about, is the possibility of using an oversize tap to loosen up the threads, thus when the bolt tightens down, it will draw up nice to the face of the part. The original tap used was a 3/8-16 GH3.
What are your thoughts?
Thanks,
Kevin