Metallics JRDS2 8 x 15/8 in. Bugle Head Square Drive Deck Screws - All-Weather - Type 17 - Coarse Threads - Each

A #2 square driver bit. The JRDS2 uses a square drive recess, and the recess measures 0.110 to 0.113 inch wide and 0.064 to 0.075 inch deep, so a standard #2 square bit seats fully. Square drive is chosen over Phillips on deck work because it transmits torque well and resists cam-out when you are driving a lot of screws with a gun.

Generally no. The JRDS2 has a Type 17 point, which is the auger-style cut tip that clears material as it enters, so it starts and drives into wood without pre-drilling and reduces splitting near board ends. Coarse UNC threading pulls the screw down fast in softwood.

Yes. These are all-weather coated, with a green ceramic coating over zinc that is intended to withstand 500 hours of salt-spray testing. That is the finish level you want for exterior deck boards, rooftop work, and damp interior spaces. For direct contact with pressure-treated lumber in permanently wet or ground-contact conditions, stainless is the usual step up.

No. The JRDS2 deck screws are not Buy American compliant and are not ARRA compliant, and country of origin is listed as multiple. On federally funded work with domestic sourcing requirements you will need a domestically produced fastener instead.

It will. A bugle head is a self-countersinking profile, and the JRDS2 head is low, 0.020 to 0.039 inch in height, with a head width of 0.315 to 0.363 inch. Driven with a #2 square bit it pulls down flush to slightly below the surface in softwood without a separate countersink. On hardwood, counterbore first if you need it truly sub-flush.

They ship in a jar of 100, and 100 is the order minimum. Jar weight is listed at 0.74 lbs. Other sizes and quantities in the same bugle head deck screw line are available by request.

The JRDS2 is made to AISI 1080 steel, a high carbon steel, with coarse UNC threading at 8 to 10 threads per inch. Coarse pitch at that count is what gives fast pull-down and holding power in wood rather than in metal; these are not a self-drilling metal screw.

Not to a single industry standard. Metallics states there is no one industry standard for bugle head deck screws, so the published figures (head height 0.020 to 0.039 inch, head width 0.315 to 0.363 inch) are a guide and slight deviations are acceptable. If you are matching an existing countersink or a trim washer, work to the ranges rather than one exact number.