Which nut for which bolt?

[bojoka4052]

If you have for example a M24 bolt, which nut type will you have to use for this bolt? Would you just say one has to use M24 type nut for a M24 type bolt? Do you classify nuts same way you do bolt sizes - M24, M26 etc?

 

[Ussuri]

You would refer to the specification for the bolts you are using. e.g BS 3692, ISO 898 etc

This table is taken from BS 3692 to give you an idea.

 

[bridgebuster]

You could say use comparable nuts and washers. However, it’s better to state the actual type you want to avoid misunderstanding.

 

[GregLocock]

You need to specify the bolt grade, not just its thread diameter. You should also specify the pitch, as a fine series is allowed even in metric. Apparently these days the rule of thumb is that the nut should be 0-1 strength grade higher than the bolt, which is a change of practice from when I was young.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[Spanky7]

See if this helps point you in the right direction

https://www.greensladeandcompany.co.../Engineering - Matching bolt & nut grades.pdf

https://www.portlandbolt.com/technical/nut-compatibility-chart/