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using longer flat head bolts
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Carnage


Oct 29, 2008, 10:20 AM
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using longer flat head bolts
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we needed more bolts and my boss accidentally ordered the ones with the angled heads instead of the square heads (the ones that use the small wrench not the big wrench). some of em are pretty big and have section that dont have threading. so on the square headed one this makes sense, but i cant for the life of me figure out why there would be any use of the angled heads on larger holds. the only time i use them is on foot jibs.

so am i not seeing something here? are there holds out there that use the angled heads that are big, or is there a way to use the angled heads on the larger holds?


acorneau


Oct 29, 2008, 10:29 AM
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Re: [Carnage] using longer flat head bolts [In reply to]
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Carnage wrote:
so am i not seeing something here? are there holds out there that use the angled heads that are big, or is there a way to use the angled heads on the larger holds?

Yes, there are larger holds that use Martini's. However, DON'T use a Martini on a cap-head hold or you'll mess up the washer insert.

Also, these bolts weren't originally designed for hand holds, they've been around longer than that.


spikeddem


Nov 1, 2008, 6:03 PM
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Re: [acorneau] using longer flat head bolts [In reply to]
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If the hold has metal in the plastic, use the big wrench bolts, if it has no metal, use the small wrench bolts.


gunkiemike


Nov 2, 2008, 1:00 PM
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Re: [spikeddem] using longer flat head bolts [In reply to]
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spikeddem wrote:
If the hold has metal in the plastic, use the big wrench bolts, if it has no metal, use the small wrench bolts.

I dunno. I've split a hold or two (that didn't have a washer IIRC) due to the wedging action of those taper-head bolts. Now I'm careful to match bolt head to seat shape.


fatoomchk


Nov 3, 2008, 5:58 AM
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Re: [Carnage] using longer flat head bolts [In reply to]
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argh. no wonder he ordered the wrong screws...



This is called a "standard head" socket cap screw.




This is called a "flat head" socket cap screw in the USA, and in other markets a "counter-sunk" socket head cap screw.

If you are worried about ordering screws, then get them from www.mcmaster.com

They are expensive, but they have very nice pictures of the screws, and even technical drawings if you want to be really sure.

Tell your boss so he doesn't "screw"-up again. (mwahahahahahaha) Laugh

and yes, it is real easy to break a hold without a washer if you use a flat head screw.


djlachelt


Nov 3, 2008, 8:33 AM
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Re: [fatoomchk] using longer flat head bolts [In reply to]
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fatoomchk wrote:



This is called a "flat head" socket cap screw in the USA, and in other markets a "counter-sunk" socket head cap screw.

It is also referred to as a "Martini" bolt.


fatoomchk


Nov 4, 2008, 12:58 AM
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Re: [djlachelt] using longer flat head bolts [In reply to]
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djlachelt wrote:
It is also referred to as a "Martini" bolt.

yeah... but that's a regional colloquialism. If you ask for a martini bolt in a lot of places you will get a strange look and a long wait.

I just mentioned the generally accepted names to help the OP


Partner ctardi


Nov 6, 2008, 11:12 AM
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Re: [fatoomchk] using longer flat head bolts [In reply to]
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Bringing in, sending in, or emailing a photo of what you want can also help. Wink


spikeddem


Nov 6, 2008, 4:55 PM
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Re: [gunkiemike] using longer flat head bolts [In reply to]
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gunkiemike wrote:
spikeddem wrote:
If the hold has metal in the plastic, use the big wrench bolts, if it has no metal, use the small wrench bolts.

I dunno. I've split a hold or two (that didn't have a washer IIRC) due to the wedging action of those taper-head bolts. Now I'm careful to match bolt head to seat shape.

I'm pretty sure what I said is correct. I think button-headed bolts can be used on anything . . . not that anyone asked.


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