assface421
Aluminum
- Joined
- May 18, 2016
Need to make a Nut for an acme thread on this old CRAVEN grinding machine we have in the shop. I went over to measure the thread, The major diameter is 1.900. I used an Acme pitch gauge and it fits a 29° 4N perfectly. So I went and looked up the thread on a chart and can not find it. The closest is 1.75 or 2.0 major diameters. What's going on? is this a weird thread or custom? Needed some advice on how to proceed.