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| kayzed1:
i have a couple or four studs to make for a mates dad's old BSA motorcycle side car, they are 7/16 and also a couple of 3/8th BSF threads...could some find person tell me the hole size and bar size i need to do these :doh: ..much grassy arse...i can do metric but have forgotten all the stuff my dad and school taught me.. Many thanks..Lyn. |
| Joules:
The tapping drill sizes are: 3/8" = 8.3mm 7/16" = 9.7mm Bar size 3/8" = 9.5mm 7/16" = 11.1mm Hope that is the info you want Lyn. |
| Lew_Merrick_PE:
The attached document is written for 60° V-threaqds (though it ought to be fairly simple to recalculate "factors" for Whitworth threads -- I have never had a need to do so. -- Lew |
| tom osselton:
I cut down some bolts and just rethreaded them using a 55 degree hhs cutter it worked out fine. |
| kayzed1:
Many thanks one and all, i will do the deed tomorrow now. :thumbup: Lyn. |
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