26-02-2022, 11:13 PM
Last week I wanted some 7/16 BSF bolts around 3 1/2" long so went out and bought some M12's longer than the threaded length I wanted.Turned them down and re threaded them and had to take about .010" off each hex flat to get the Whit size hexagon too,These M12 bolts were I think .462" about 010" down on true size.
The M20's may need more than a quick file to get to 3/4".Better if you've got a local friend with a lathe to reduce their size.If they're 2.5 pitch thread will be ok to use.
The original bolts were 3/4 along their plain dia reduced down the the (Austin std thread 5/8x14)
The M20's may need more than a quick file to get to 3/4".Better if you've got a local friend with a lathe to reduce their size.If they're 2.5 pitch thread will be ok to use.
The original bolts were 3/4 along their plain dia reduced down the the (Austin std thread 5/8x14)