Trying to figure who’s screw this is. It appears to have a ceramic coating, has a special head so it will cut the fibers and not fuzz up, torx drive, cutting point on the screw tip with reverse threads so the material won’t ride up. The most unique feature is the screw shank which has a triangular shape to it. The portion with the reverse threads is round.
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Replies
1110
GRK has screws similar to what you show, but have only seen them in white or bronze.
Fastenmaster has several colors and I think the same reverse thread. (With composite matching color plugs.
check those out.
edit: here's a similar thread design from fastenmaster
https://www.fastenmaster.com/details/product/trapease-3-composite-deck-screw.html
i looked at my GRK and they have a break at the thread change, that those linked above do not. Also, some fastenmasters I have look the same. You might just have to search decks crews and spend time hunting if you need an exact match. Otherwise, most of the others have something in that thread change.
Thanks, it's a Fastenmaster Trapeze 3.
Alternative
Here is a composite deck screw, 17 colors available (10 in stainless), coating has endured a 1000 hr. salt-spray test.
http://www.screwsolutions.com/Composite-Deck-Screws_c_16.html
Ok, since you brought your own website...
I'm looking for a screw to attached cement board siding to 3/4" wood sleepers. The siding is the discontinued Certainteed product and it will be installed vertically using a board-on-board pattern with a 5/16" thick spacer to provide a shadow line. This means the screw will be punching trhough 15/16" of cement board and I'd sure like to not predrill. With 1/2" of sheathing I'm looking for a screw around 2" long so it won't over penetrate. The head will be exposed which is why I was considering the composit deck screw. Problem is the screw pictured above is only available as a 2-1/2". Prefer Torx drive, but I'd consider a R2. Currently thinking about a GRK #8x2" cabinet screw which is exterior rated, but the large head will be exposed. Looking for around 5,000 fasteners.
Star drive cement board screws
These coated cement board screws are 1-5/8" long, which will nearly penetrate the wood sleepers. I am assuming that the heads will be exposed/painted?
http://www.screwsolutions.com/Cement-Board-Screws-Sharp-Point_c_36.html
If that won't work for you, these will
http://www.screwsolutions.com/-BTX-08134-8-x-1-34-inch-Bronze-Star-ACQ-Compatible-Star-Drive-Wood-Screws-4M-per-carton_p_268.html
I think that the washer style head would be too large, the standard flat-head would be a good alternative.
The composite screw head would be too small to draw the material up tight but either of these two options would be a good choice.
Yes, these will be painted after installation, but I still want a exterior rated screw. I had thought of using a cement board screw, but I have two issues with them.
1. The displaced material fuzzes up around the head.
2. It takes a ton of power to sink the screw so you really need to predrill. Predrilling may help with #1, however I really don't want to predrill 5,000 holes.
I'm not familiar with the second screw option. How will perform in relation to my two items of concern?
Options
I don't think that you will have to pre-drill. I have experienced what you are talking about with the "fuzz-out", don't think that you will find a way to get around that. There will always be some displaced material with screwing cement board. Some samples might be in order for a trial, feel free to request some.
Do you have any idea how fast you can sink stainless steel ringshank nails with a siding gun? And they will not pull out, they probably hold better than screws. No fuzz either. Just smooth heads with no driver holes or marks. And you can buy a great siding gun and a box of nails for probably a good bit less than a box of screws. Screws definately have their place, but nails flat out work.
Well, that is a drawback of nails. Normally I don't plan on removing siding, but if the screws are for a special application, that's different.