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Chockstone Forum - General Discussion

General Climbing Discussion

Topic Date User
SS Coachscrews at Bunnings - Are they ok? 29-Jul-2014 At 10:46:16 AM nmonteith
On 29/07/2014 Mr Poopypants wrote:
>I reckon just don't use them as permanent bolts. They are no where near
>as strong as machine bolts. If you don't believe me get one and try screwing
>it into a hardwood post. They snap really easily.

They snap?! How? I don't see how they could be weaker than a similar sized machine bolt when used as a glue-in.

I've used quite a few of those coach-screws as glue in carrots in the last year. There are two reasons I have used them instead of normal machine bolts, they don't require additional grinding (the thread is wide, deep and goes almost all the way to the top of the bolt) and the second reason is cost. They are half the price of a normal machine bolts (something like $1.50 per bolt at Bunnings).

You will need to grind off the edges of the hex-head so PFH bolt brackets will fit.

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