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I've been googling this, but I'm hoping someone already with the knowledge can give me some guidance.
I'm getting my old tow bar assembly shot blasted and I'm going to get it galvanised. I want to buy new bolts for it as the current ones could well be 20yrs old and very rusty.
I'm not bothered about them being stainless, though that would be good. Is stainless strong enough? Would I have to ensure they were A70 or a different grade? If stainless is no good is there a grade of mild steel I should ensure I get.
The two bolts holding the ball to the back plate are approx 17mm or 5/8" diameter.
The bolts through the rear cross member and other fixings are approx 12mm or 7/16" diameter.
The smaller ones are M12 thread. I don't have a die big enough to check the 17mm bolts, so I'm assuming the thread is metric.
I'm getting my old tow bar assembly shot blasted and I'm going to get it galvanised. I want to buy new bolts for it as the current ones could well be 20yrs old and very rusty.
I'm not bothered about them being stainless, though that would be good. Is stainless strong enough? Would I have to ensure they were A70 or a different grade? If stainless is no good is there a grade of mild steel I should ensure I get.
The two bolts holding the ball to the back plate are approx 17mm or 5/8" diameter.
The bolts through the rear cross member and other fixings are approx 12mm or 7/16" diameter.
The smaller ones are M12 thread. I don't have a die big enough to check the 17mm bolts, so I'm assuming the thread is metric.