DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Roofing and Siding > self-drilling zip screws for leader extensions

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Old 09-26-2010, 10:17 AM  
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Default self-drilling zip screws for leader extensions

I had a few left over white hex 8 x 1/2" self-tapping screws from the new aluminum gutter install but I needed a few more. I have been to home depot and several big hardware stores but can only find them online. (See attached photo)

There are apparently various types of self-tapping screws, but from I gather I shouldn't be using the ones that have that special look at the point. The ones in the photo have very sharp edges and were very easy to install.

My leaders are aluminum and I assume the screws should be aluminum too, though they seem to be hard to find. One store sold me some stainless steel phillips head 8x 1/2" as a backup but don't know about the interaction between aluminum and stainless steel. Any thoughts?

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Old 09-26-2010, 10:37 AM  
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You shouldn't have a reaction between aluminum and stainless. Problems occur when you have copper and aluminum together. If you are trying to find the screws they used for your gutters look in the phone book and find a gutter or siding supply house. They will have different colors to match your application.

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Old 09-26-2010, 04:43 PM  
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You could also check with your local roofing supplier but, expect to have to buy them in a minimum quantity box (100ct.).
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Old 09-27-2010, 09:36 AM  
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The stainless should be fine altho more expensive than what you need.
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Old 12-09-2010, 08:38 PM  
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We sell these screws to gutter installers all the time for their aluminum gutters with no problems. Check out our home page which has pictures of the same screws. By the way, don't call these self-drilling screws or you will get the wrong part. Ask for needlepoint or zip screws.

Zip Screws Self Tapping Screws Self Drilling Screws Tek Screws  Fasteners Nuts Bolts Rivets- All Points Fasteners

All Points Fasteners, Inc.

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Old 12-10-2010, 09:36 AM  
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Thanks MaryLouise, but can I just buy 100? I'm only a homeowner don't need quantity. That would be part #10006 8 x 1/2" white indented hex washer head slotted needlepoint screws. If you don't sell direct, please give me some stores that carry them either near zip code 10520 or new york city. Thanks.

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