316 Stainless steel single auger point Deck Screws are excellent for outdoor applications. Self Drilling Type 17 Auger points are great for pressure treated lumber and other decking materials. You can't get away without predrilling your screwholes, but Auger points certainly make it easier to drive into the hardwoods. Marine grade Stainless Steel for excellent outdoor corrosion resistance.
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Stainless Steel 316
Do I need to predrill if using your 316 s/s auger point 3 1/2 in screws? Screwing cedar railings into cedar posts.
I always predrill.It's always something with something.
Cedar has a tendency to split. To be safe, I would predrill.
I would predrill the railings slightly smaller than screws, no need to drill posts.Â Have a great day Henry & Sandy
On a softwood like cedar, you shouldn't need to predrill.
JD Tech Team
Probably not but check to see how much torque is required to drive the screw. You don't want to be twisting of any heads.Dave
I am looking to fasten redwood planks to stainless steel angles with these screws and wanted to know the thread diameter for pre drill of the angle. What is the diameter of the threads or shaft?
The designer wants no surface hardware and no plugs in the planks.
I don't know the diameter and they are all in the deck so I can't measurethem. I'm surprised Jamestown can't measure one. I'm afraid your short cut won't be a long term solution . I'd use stainless bolts ,they cost moreand require more work but far more reliable.
CHARLES V KINSLEY
Thread dia. .150, so a 5/32" minimum drill will work but I would go with a 3/16"
I cannot give you a specific answer to your question but my first reaction is that this is the wrong fastener for your application. This is a wood screw not intended to fasten metal parts.
JohnThank you. I am fastening 2x6 redwood to a stainless angle in and exterior application. All good
How do I get these in phillips-head, not square drive?Does 6x 1 1/4 mean 6" long and threads go up 1 1/4" to the top?
6 x 1 1/4 means 1.25 inches long. The "6" refers to the shank diameter or size. Screws of all types are sized by shank size. I think typical deck or wood screws range from 4 to 12. As to availability of Phillips-head, Jamestown Distributors will have to answer that.
I have never seen them with phillips - head .Most aredriven using a power tool and the square is a lot easierto use.
CHARLES V KINSLEY
The figure 6 refers to the diameter of the screw, and 1 1/4 to the length. Stainless screws strip easily, and the square head is better than the Phillips head. Hope this helps.
Can I use stainles deck screws to apply the plywood of my boat. Bob ?
I used these screws to make repairs on my plywood Carolina boat and they worked wonderfully. They are much less likely to break or strip out than the brass screws.
I did not use these on a boat, however I did use them to attach Atlantic white cedar siding to my house at the beach and this would be a similar use to what you are considering. Be sure to use the square drive screws. I predrilled my holes but was able to countersink the screws perfectly using a variable speed drill with a clutch without using a countersink bit to dress the predrilled holes.
Ideally, use 316 stainless screws.
Yes, they will work excellent for that appliciation. I recommend you pre-drill and countersink tool. You can find the correct one to use on the "Users Also Bought" on the page were the screws are.
Out door applications such as what ?
Almost anything. 316 stainless is the most "stainless " of the stainless steels. It is what is used for salt water marine applications. These screws are perfect for decking because they won't rise or stain the wood. I used them to put together adirondack chairs.
I used them to build a deck - that's why they're called deck screwsgalvanized screws corrode when you use them in cedar or treated lumber - so stainless steel will give you best looking and longest lasting deck - but they are expensive and quite thin at the top so I ended up snapping a few - especially the longer ones where you need a lot of torque to drive them. This can be overcome by pre drilling slightly larger holes, using a lubricant and using a low torque setting on your driver. I also used them to build planters from cedar.
ADRIAN VAN SCHIE
I live on a small Caribbean island where salt fog rusts plated screws and even galvanized screws within a few years. I used these on a variety of projects including a chicken coop, a large outside battery box associated with a solar power system, a cover for a propane tank storage vault and others.
I have used these to attach Cedar decking to presure treated lumber, part of a small foot-bridge.
JOHN T. DAVENPORT
How many screws are in a box?
There are 100 in each box.
Are stainless deck screws marked in any way? By just looking at the screw how can I know it is 316 ss and not 305?
There are no markings on the screws. You just have to trust jamestown the box has 316 on the product label.
What is 316 stainless steel?
316 Stainless steel is a very high grade of Stainless steel. It is used extensively in marine applications.
Is it considered a non-ferrous metal?
Yes, since it is a metal that does not contain iron it is a "non-ferrous" metal. Ergo, rusts very little or none at all depending on the type of non ferrous metal it is. Stainless is very rust resistant.
I don't know. It seems like an easy question but a quick google search will reveal there's a lot to answering your question.Best,Rob M
Stainless steel contains iron; hence it is a "ferrous" material.
Can this screw be used as a cement screw like a tapcon?
I've never tried using them in concrete, and I personally would not attempt it. You really need a tapcon style thread for anchoring in concrete.
I used this screw to help build a new shower. It had to go through cement board and a few layers of "other stuff" that no other screw would. It did so beautifully, but I did not try drilling it into the slab itself. Hope that helps.
I would not know. I used them to secure an new hatch on my boat. The screws went into 2" solid fiberglass without stripping out the hole.
I would not use any ss screws in cement. Better hardware stores have cement screws that look almost like brass for the color of their plating.The threads look similar to those on the deck screws. Hope this helps.
Bob,I cannot say. I've only used the screws for wood.
HAVE NOT USED IN THAT APP
I would not think so.They are not the strongest screw aroundlew
Easy to use. Hold up in salt spray.
Used for walkway from beach house to ocean.
Chapel Hill NC
Don't screw around with lesser fasteners
Used these screws with the correct Fuller tapered bit for an Ipe deck project. They are working FANTASTICALLY! No stripping, no snapping - SUPER happy with them. I've pre-drilled and driven about 1000 of these so far and broke 2. (One broke during an experiment w/o pre drilling)quick shipping from JD has been a plus as well.