Metallics JCPD4 9 x 3 in. Bugle Head Square & Phillips Deck Screws - Steel Ceramic - Type 17 - Coarse Threads - Each

Yes. The JCPD4 carries a ceramic polymer coating over steel that is rated for use in pressure treated lumber and resists corrosion for roughly twice as long as dacrotized steel deck screws. It also holds up to UV exposure, which matters on exposed deck surfaces and rooftop work.

The JCPD4 has a Type 17 point, which is a cut auger tip that clears material as it enters, so it self-starts in wood without a pilot hole in most softwood and treated decking. Near board ends or in dense hardwood, pre-drilling is still the safer call to avoid splitting.

No. The JCPD4 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your project carries domestic sourcing requirements, this screw will not satisfy them.

Either. The head is a combination square/Phillips recess, so a #2 square or a #2 Phillips bit both drive it. The square recess runs 0.110 to 0.113 in. wide at 0.064 to 0.075 in. deep; the Phillips recess is 0.176 to 0.201 in. diameter at 0.124 in. deep. On a long 3 in. run most installers prefer the square drive for less cam-out.

That is what the bugle head is for. The tapered underside of the head pulls itself into the wood surface as it seats, so no separate countersink step is needed on softwood or composite-over-wood decking. Head width measures 0.334 to 0.363 in. with a head height of 0.020 to 0.039 in., so it leaves a small footprint on the board face.

The JCPD4 ships in a jar of 100 screws, and 100 is the order minimum, so you are buying by the full jar rather than by the piece. Jar weight is 1.39 lbs.

Coarse UNC thread at 8 threads per inch. That wide pitch is what you want in wood and treated lumber, since fewer, deeper threads bite softer fiber and pull boards down tight. It is not a fine-thread fastener and is not intended for metal-to-metal work.

They get used well beyond deck building. Metallics lists the CPD series for the electrical, plumbing, heating and air conditioning trades, where a corrosion resistant 3 in. wood screw is handy for mounting backer boards, strut backing, condenser pads and equipment blocking. The ceramic polymer coating and UV resistance are what make it suitable for exterior and rooftop locations.

Yes, Metallics builds the CPD bugle head Type 17 coarse thread deck screw in other diameters, lengths and pack quantities beyond the #9 x 3 in. jar of 100 sold as JCPD4. Specify the diameter, length and pack size you need when you order.