What's your favourite thread size?

[jackofall84]

...For me it's got to be M6, it's just a lovely size, not to big, not too small, easily available, a lovely 1mm pitch, 10mm A/F or a 5mm hex key and obviously as a 10.9 zinc plated, I mean what's not to like?

Asked a couple of my colleagues - one loves an M12 as he thinks that's the start of the big sizes, another likes an M3 (though he's an electronics engineer so what do you expect?) Another colleagues favourite was "Are you being serious you sad fing basrd"

So come on, what's your favourite?

[jackofall84]

Huntsman said:

M7. Love the quirkyness,

Unless of course we're not just talking metric, in which case, i just love BA!

BSP - nasty mess!

I always thought I was alone and a threads nerd.

Definitely not restricted to metric, I have to use BSP threads a lot and i always have to remind myself in books/tables how big/small they actually are, 1"...no no no you mean 33.25mm

[jackofall84]

Gary C said:

13mm every time.

It's almost 1/2" so you can use either spanner

Are you pulling my leg? There's no standard M13, I mean M14 exists but it's not a preferred size, an M12 is 19 A/F though and a 1/2" is 3/4 across the flats so you could probably get away with a 3/4 spanner on an M12 bolt and a 19mm spanner on a 1/2" bolt.

[jackofall84]

I've changed my mind, after having to torque up 180 1-1/4" bolts yesterday to 700Nm, I just like any size that only requires torquing to 150Nm...my arms are in agony this morning!

[jackofall84]

gazza285 said:

Hire one of these next time.

I will be for the remaining pipe flange bolts, unfortunately 3 of the flanges do not have enough clearance between the flange face and the tank to get a gun in, so it was down to a good old fashioned torque wrench and heaving!