HWooldridge
Hot Rolled
- Joined
- Aug 29, 2005
- Location
- Central Texas
You would think this data would be easy to find...
I am doing a little machining on some spark plugs for a friend and need to chase the threads. There are enough plugs in the job that I could invest in a die and run it over the body to clean up the threads but I can't find thread standard data for the pitch of the various diameters. In other words, do American plugs use a 5/8 NF thread form or the equivalent in metric? If it's a 14mm diameter, what it the proper pitch - etc? Thanks for shedding any light or directing me to the right website.
I am doing a little machining on some spark plugs for a friend and need to chase the threads. There are enough plugs in the job that I could invest in a die and run it over the body to clean up the threads but I can't find thread standard data for the pitch of the various diameters. In other words, do American plugs use a 5/8 NF thread form or the equivalent in metric? If it's a 14mm diameter, what it the proper pitch - etc? Thanks for shedding any light or directing me to the right website.