Metallics CPD5V 10 x 3-1/2 in. Bugle Head Square & Phillips Deck Screws - Steel Ceramic - Type 17 - Coarse Threads - Each

Yes. The CPD5V deck screw is steel with a ceramic polymer coating that resists corrosion and is called out for use in pressure treated lumber, with good wear resistance and strong resistance to UV. That matters because modern ACQ-type treated wood is hard on bare or plain-plated steel fasteners.

No. The CPD5V is listed as not Buy American compliant and not ARRA compliant, with multiple countries of origin. For a project with domestic sourcing requirements you'll need a fastener specifically certified to them.

The Type 17 point is the auger-style tip ground into the end of the CPD5V, and it cuts its own clearance in wood so the screw starts fast and pulls through without pre-drilling in most decking and framing lumber. Near board ends or in dense hardwood you still want a pilot hole to avoid splitting.

The head is a combo square-Phillips recess, so you can run it with either a square drive or a Phillips. Listed driver size is #2. Square recess width is 0.110 to 0.113 in. with 0.064 to 0.075 in. depth; the Phillips recess runs 0.190 to 0.204 in. diameter and 0.124 in. deep. A power bit ships with the screws.

It's a bugle head, which is designed to seat itself flush in wood without a countersink. Head width measures 0.334 to 0.363 in. with a head height of 0.020 to 0.039 in., and the head carries nibs that cut the fibers as it pulls down so it sinks clean instead of mushrooming the board. Bugle heads have no single industry dimensional standard, so slight deviation from those figures is normal.

They ship in a box of 500 each, and 500 EA is the order minimum, so this is a bulk buy rather than a handful. Box weight is listed at 9.32 lbs. Metallics does offer other sizes and quantities by request.

Coarse, at 8 threads per inch, in a UNC thread form. Coarse pitch is what you want in wood and composite framing because the deeper thread grabs soft fiber and draws the board down fast; a fine pitch screw of the same diameter would strip in softwood.

The CPD series is catalogued for the electrical, plumbing, and heating and air conditioning trades, so it's a general wood-fastening screw for blocking, backer boards, strut backing, and other framing attachment on those jobs. It is a wood screw, not a structural fastener or a concrete anchor, so anything carrying a load rating needs a product rated for that use.