The British Steelies Society

All you chaps looking to source or make parts ...... You may find this a tad handy!

I've only copied up to ½" as it's is unlikely you will use higher than that!

For anyone doing any metal work, a handy little book we all use in the trade is a "Zeus" book.

It's got most of the common thread details for tapping and other reference tables, in a top-pocket size form.