Metallics JCPD3 9 x 2-1/2 in. Bugle Head Square & Phillips Deck Screws - Steel Ceramic - Type 17 - Coarse Threads - Each

Yes. The JCPD3 carries a ceramic polymer coating over steel that is rated for use in pressure treated lumber and resists corrosion roughly twice as long as dacrotized steel deck screws. It also holds up to UV exposure, which matters on exposed deck boards and outdoor framing.

The JCPD3 uses a Type 17 point, which is an auger-cut tip made to start and clear chips without a pilot hole in wood. That is what keeps decking from splitting at board ends in most cases. Dense or brittle hardwood is still worth a pilot hole.

No. The JCPD3 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.

A #2 bit. The head takes a combination square/Phillips recess, so either a #2 square or a #2 Phillips driver works. The square recess runs 0.110 to 0.113 inch wide and 0.064 to 0.075 inch deep; the Phillips recess is 0.176 to 0.201 inch in diameter and 0.124 inch deep. Crews that prefer square drive for less cam-out can run it that way without changing screws.

Bugle head with nibs under the head, so it self-countersinks and seats flush in softwood without a separate countersink bit. The head measures 0.334 to 0.363 inch across with a head height of 0.020 to 0.039 inch, so it sits low and leaves a small footprint on the board face.

Yes, coarse is what you want in softwood and treated lumber. The JCPD3 runs a coarse UNC thread at 8 threads per inch, which bites fast and holds in wood fiber. Fine threads are for metal or dense material, not deck boards.

They ship in a jar of 100, and 100 is the order minimum. The jar weighs 1.18 lbs. Useful if you are stocking a service truck rather than buying a contractor bucket.

The CPD series is stocked for the electrical, plumbing, and HVAC trades, where these screws get used for mounting panels, backer boards, strut, and exterior equipment supports into wood. It is the same fastener a deck builder would use, just carried for mechanical trades.

Treat them as a guide. There is no single industry standard for bugle heads or for deck screw dimensions, so Metallics publishes the head width, head height, and recess figures as nominal ranges and slight deviations are acceptable. The ranges are tight enough to confirm driver fit and whether the head will seat in your counterbore.