Metallics JDWS75C 6 x 3/4 in. Bugle Head Phillips Drywall Screws - Steel Black Phosphate - Fine Threads - Each

Fine thread with a sharp point puts these on light gauge steel framing. The 18 threads per inch fine spacing is the standard drywall screw configuration for metal studs, where coarse thread is what you want for wood framing. The sharp point pierces light gauge steel track; for heavier gauge steel you need a self-drilling point instead.

No. Black phosphate is a dry interior finish only, and the JDWS75C is steel with a black phosphate coating. It will bleed rust through paint in bathrooms, exteriors, or anywhere there is moisture or treated lumber. Use a corrosion resistant coated or stainless fastener in those spots.

A #2 Phillips. The bugle head takes a Phillips recess 0.176 to 0.201 inch in diameter and 0.106 inch deep, which is what a standard #2 bit seats into. Worn #2 bits cam out on phosphate screws, so swap the bit before you blame the fastener.

That is what the bugle head is for. The head measures 0.315 to 0.347 inch across with a head height of only 0.020 to 0.031 inch, so the tapered underside pulls the paper face down without cutting it and the crown sits just below the surface for joint compound. Set your driver depth stop so the head dimples rather than tears.

They ship in a jar, with a minimum order of 100 count. Jar packaging weighs 0.31 lbs and is handy for a service truck or a punch list cart rather than a full hanging job, where bulk boxes or collated strips make more sense.

The JDWS75C is flagged compliant for both ARRA and Buy American in the manufacturer data. Country of origin is listed as multiple, so if your specification requires a single documented origin for the submittal, that is the detail to pin down with the order.

The JDWS75C is case hardened to Rockwell C44 on AISI 1018 steel, which is the normal range for a drywall screw driven into light gauge steel. That hardness is what keeps the sharp point from rolling over, but it also means the shank is brittle: over-torque it in heavy framing and it will shear rather than bend.

It will drive, but it is a panel fastener, not a structural one. The bugle head is shaped to countersink into gypsum paper, so it does not bear well against a steel box flange, and 3/4 inch gives very little purchase. For mounting boxes and brackets, use a pan or hex washer head screw where the flat seat clamps the flange.

No, and Metallics says so directly: there is no single industry standard for bugle head or drywall screw dimensions, so the published head and recess figures are a guide and slight deviations are acceptable. In practice that means head diameter and recess fit can vary slightly brand to brand, which matters if you are matching collated strips to a specific auto-feed gun.