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hugo7

Does anyone know what at what length M6 bolts start having shoulders?

(I'm after a 30mm socket cap head bolt, but ideally with a full thread. Can always cut more a thread if needed, but would also think of other workarounds if it's likely to have a shoulder)

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freezing77 in reply to @hugo7

Generally if it has thread along the whole length it is a screw, if it does not it is a bolt. But of course not everyone sticks to the naming convention.

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JurekB in reply to @freezing77

Set screw?
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hugo7 in reply to @freezing77

Interesting.

I thought it was to do with whether is had a point (to be screwed into something) or flat (requiring a bolt)

Nonetheless, a 20mm m6 thing with an allen head has a thread the whole way up. Is a 30mm m6 likely to have a shoulder?

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