I brought some of these the other day
but cant seem to get any nuts to fit (metric or imperial).
The threads look identical to other M10 bolts i have and the nuts screw on them fine but these just wont.
Anyone know of any other reason they may not fit?
Different pitch? M10 x 1.00mm pitch or M10 x 1.25mm?
Duff batch? Too thick galvanising?
JC
[Edited on 17/6/09 by SeaBass]
I'd measure the pitch. The difference between 1 and 1.25 is quite tricky to spot unless you measure....
get a bolt you know these nuts go on to, and hold it against the thread of the new ones. if they all line up then could be a dodgy batch. if not, then different pitch
quote:
Originally posted by blakep82
get a bolt you know these nuts go on to, and hold it against the thread of the new ones. if they all line up then could be a dodgy batch. if not, then different pitch
yep you can run a die down it
sounds like they sent you the wrong bolts. send them back and get them to pay the return postage for thir mistake.
It's almost certainly a pitch problem. Most european M10 stuff is 1.5, ie 1.5mm between each thread. Jap stuff is all 1.25 which is much more
difficult to find. They will start alright (for half a turn or so) and then lock up. If you can find a bolt which does screw in then place that one
alongside the other one and see iff the threads correspond. If so it's a size problem, if not a problem with the pitch.
M10 X 1.00 is really rare. I doubt either will be 1.00.
ETA. You wont fix it with a die. BAD idea....
[Edited on 17/6/09 by MikeCapon]
it has gotta be pitch?
I cannot imagine a batch of bolts with galvanizing being too thick - you'd have throught the manufacturer would have take that into account. you
shouldn't need to run die on new bolts.
you can ask seller what pitch they are?
it is possible you got sent UNF or something else?
I brought a tap and die set yesterday and measured the pitch which was 1.5 so ran a die down it and the nuts go on fine so it must have just been
slightly too much galvinisation 