I have a Presto tap marked '5/16" BRASS 26TPI'
5/16" Cycle thread (which is what I want to make a nut for) is also 26TPI, question is can I use the tap I have?I have Googled but cannot find any data on the Brass thread form and wondered if anyone here remembers brass threads? ISTR that they too were all
26TPI and used in the manufacture of gas light fittings. Having said that not all cycle treads are 26TPI though!Ian Phillips