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would you expect BSC to be specified on the die
It would be nice, but the manufacturer's mark matches these BB taps so they obviously made cycle tools.
Also, I was wrong earlier, UNC/UNF/UNEF threads are 60° flank angle, but 1" UNEF are 20TPI anyway so anything 1"×24TPI is almost certainly BSC
gbj_tester
Scilly.Suffolk
pdlouche
This is advertised as being for bike forks: would you expect BSC to be specified on the die, ie assume UNF if it doesn't say otherwise?