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Quick metric imperial conversion
tegwin - 12/5/08 at 08:39 PM

Im having a blonde moment and my trusty zeus book of truths has let me down...


What is 10/32 (unf) in metric? I stoopidly thought it was close to 8mm....so ordered the part, and its waay smaller


nasty-bob - 12/5/08 at 08:42 PM

about 5mm methinks


Coose - 12/5/08 at 08:44 PM

quote:
Originally posted by tegwin
What is 10/32 (unf) in metric? I stoopidly thought it was close to 8mm....so ordered the part, and its waay smaller


10/32 UNF? No such thing - you mean 5/16, which is just under 8mm.


mistergrumpy - 12/5/08 at 08:45 PM

Odd. I get 7.9mm too.
25.4 /32 = 0.79
0.79x10= 7.9mm


tegwin - 12/5/08 at 08:46 PM

I bought this

http://cgi.ebay.co.uk/ws/eBayISAPI .dll?ViewItem&Item=160219605453&Category=15271&_trksid=p3907.m29


Kinda assuming it was almost 8mm....not sure what the heck they are on about....


Coose - 12/5/08 at 08:52 PM

Hmmmm, I've just found a chart on t'interweb that refers to UNF thread sizes 0-12, then from 1/4" upwards. Have a look here. After many years working on obsolete machinery I've never come across this before

You're looking at a number 10, 32tpi and an external diameter of approximately 4.5mm.


tegwin - 12/5/08 at 08:54 PM

LOL!!! oops...my mistake.....BUGGER!

I dont think my shiny new 8mm rod ends will fit...


Has anyone seen any rod ends or clevises with such a weird thread?...Or am I going to have to resort to glue and bluetack?..


(its for my BEC gearchange)


trikerneil - 12/5/08 at 08:56 PM

10-32 UNF common as muck in the piezoelectric sensor world.

Neil


keith2lp - 12/5/08 at 08:56 PM

10/32 unf is,

Major Dia, 0.189" or 4.80mm.

[Edited on 12/5/08 by keith2lp]


Coose - 12/5/08 at 08:57 PM

Chewing gum and a bit of dog spit fixes everything!


nasty-bob - 12/5/08 at 08:58 PM

knew I wasn't going mad

linky


Alan B - 12/5/08 at 09:02 PM

Definitely 10-32 NOT 10/32

Its a number "10" size with 32 tpi pitch and is very similar to M5.

The equivalent coarse thread is 10-24


tegwin - 12/5/08 at 09:03 PM

so an M5 nut would fit with some persuasion?


Alan B - 12/5/08 at 09:06 PM

Wouldn't need any persuasion...would be a touch loose if anything...be tight the other way round..

However I could not condone such a bodge...


nasty-bob - 12/5/08 at 09:06 PM

yeah M5 nut fits fine just a little sloppy


tegwin - 12/5/08 at 09:08 PM

Hmm....Looks like I am going to be making some adapters then.....

Shame I dont have a lathe....I wonder if you can turn 8mm threaded rod into 5mm threaded bar using an angry grinder

(Im not seriously going to try it!)


mr henderson - 12/5/08 at 09:16 PM

quote:
Originally posted by tegwin
so an M5 nut would fit with some persuasion?

Your local nut and bolt shop can probably sell you the correct nut


rallyingden - 13/5/08 at 06:35 AM

You can get the correct nuts HERE

RD