Author Topic: stupid question about allen bolt sizes.. (Read 729 times)

griff · « **on:** January 18, 2012, 11:01 PM »

swapped the seat clamp on my mirraco for a profile slim jim, but despite having loads of allen keys none of them seem to fit
4mm is too small, 5mm too big so thinking it must be a weird imperial size? (helpful)

anyone know what size(s) this might be?
even better if anyone going to boardroom on saturday has one please can you bring it with you so I can tighten it up?

cheers

griff

Betty · « **Reply #1 on:** January 18, 2012, 11:11 PM »

Don't know the size you're after but it'll be imperial, all profile stuff is...

dan-dare · « **Reply #2 on:** January 18, 2012, 11:13 PM »

3/16"

griff · « **Reply #3 on:** January 18, 2012, 11:15 PM »

Quote from: Betty on January 18, 2012, 11:11 PM

Don't know the size you're after but it'll be imperial, all profile stuff is...

bloody yanks

cheers betty/dan

jT Racing · « **Reply #4 on:** January 18, 2012, 11:37 PM »

About 3 or 4 quid a full set at b&q. Shite quality, but good enough for a few Bmx bits and bobs.

BENDYCAT ELEVENTEEN · « **Reply #5 on:** January 18, 2012, 11:47 PM »

I have two sets of allen keys on a rings - metric and imp - save loads of time and bolts getting it right and not stripping out the head (to which i have done many a times

)

griff · « **Reply #6 on:** January 19, 2012, 12:17 AM »

result - just had another rummage in the spare room and discovered the screwdriver ratchet set I've never ever used has a set of imperial bits

put a big allen key through the hole in the handle of the screwdriver for leverage and it worked a treat

now I just need to find a polished top loading stem to match the seat clamp