Quick bolt size question

Posted on Mon 17th, August 2009

• #1

Wicksie

and it may be a stupid question, but if a bolt takes a 5mm alan key, does that mean the bolt is 5mms?

Braces self to be shot down in flames...
• #2

ehren_fried_chicken

I'm having a Deja Vu.

If a bolt takes a 5mm allen key it means that the hexagonal "hole" where you put the key in is 5mm across, measured from one flat bit to the opposite flat bit - not from pointy to pointy.
• #3

noah

but yeah no relation to actual bolt size
• #4

Wicksie

I thank you.
• #5

ehren_fried_chicken

You were lucky that noah and I happen to spot this thread. It could've turned ugly...and probably will.
• #6

Wicksie

Because I haven't read all the threads on the forum to make sure it hasn't been broached before and because I don't spend time doing mechanics so don't know about these sort of things?

Sighs.

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