Threaded Rod Question

[broadway]

Hi Folks,

I hope someone can help? I need to buy some threaded rods however all the ones I look at online seem to have a "M" figure, ie M8, M10, etc. I assume these are some sort of measurement but wondered if someone could confirm?

[zazen999]

Unified and Metric Thread Forms

m is the Diameter - M10 is 10mm.

[shirlthegirl43]

Yup, they are measurements - not quite sure how the measurements work but you can also buy the nuts sized the same way. Hope that helps you a bit

[broadway]

Doh!

Thanks ladies

[zazen999]

Oh - sorry - should have waited for the boys on a mechanical engineering question.

[bubblewrap]

M = thread size
Across the flat sizes of the nuts(Spanner size)
so For a M10 nut you need a 17 A/F Spanner for a M12 a 19 A/F spanner.
By the way M6 & OBA are the same thread.

[bubblewrap]

There are lots of other threads
BA
BSF
BSW
BSF
BSP
UNF
UNC
Conduit.
Metric sizes are usually sold in coarse thread but you can get metric fine.

[pigletwillie]

M10 will need a metric 17mm spanner and an M12 will need a 19mm metric spanner. The many varieties of imperial pitch spanners are (mainly) consigned to history thankfully.

In fact for most purposes a 10mm spanner for M6 bolts, a 13mm spanner for M8 bolts and the two mentioned above will suit most domestic applications. The M size is for the threaded part of the bolt, not the size of its head.

The drain rods wont need spanners as they just screw together, each lenth of rod having a male and a female end.

Try either machine mart or screwfix, both will give you a good deal.

[Snadger]

Oh - sorry - should have waited for the boys on a mechanical engineering question.

And don't you forget it!

[pigletwillie]

Snadger, shorten the chain, keep her nearer to the sink. We cant have the girls gettig above their station and actually understanding mechanical things.

[NOG]

What happened to Whitworth. When I was an apprentice I had 3 sets of Spanners. Imperial, W and Metric

[jacob marley]

[. .. The many varieties of imperial pitch spanners are (mainly) consigned to history thankfully.

.
Here what's this all about i still use whitworth nut's and bolt's and spanner's they still work fine....jacob

[allotmentlady]

this threads is too technical for me ***runs out the room***

[bramble]

Have to say, the women stood out on their own in this thread.
And rightly so, we women all knew it, just waiting for an oppertunity to prove it.

[bubblewrap]

What happened to Whitworth. When I was an apprentice I had 3 sets of Spanners. Imperial, W and Metric

I did mention BSW in an earlier post. What about BSF the A/F size of the nuts were the same as BSW.
The place I worked at went metric in 1971