Metallics JDWC3C 6 x 1-1/4 in. Bugle Head Phillips Drywall Screws - Steel Black Phosphate - Coarse Threads - Each, 100 Pack

No, not the right choice. The JDWC3C has coarse UNC threads and a sharp point, which is made for wood framing. Metal studs need a fine thread screw with a sharp or self-drilling point so the threads engage thin steel instead of stripping it. Metallics' DWC/JDWC series covers coarse thread versions; for steel framing ask for the fine thread drywall screw in the same diameter and length.

No. These are sourced from multiple countries of origin and are listed as neither Buy American compliant nor ARRA compliant. On a federally funded job with domestic sourcing language, you will need a different fastener.

A #2 Phillips. The recess is a Phillips drive sized for a #2 bit, with a recess diameter of 0.176 to 0.201 inch and a depth of 0.106 inch. Any standard #2 Phillips insert bit or drywall gun bit seats correctly, so no special tooling is needed.

The bugle head is a shallow, flared profile, measuring 0.315 to 0.347 inch across and only 0.020 to 0.031 inch high. That flare lets the head dimple the paper face and seat just below the surface without tearing through, so it can be skimmed over with compound. It is the head shape you want for board work rather than a flat or pan head.

They ship in a jar of 100, and 100 is the order minimum. The packed jar weighs 0.43 lbs. Other sizes and quantities in the JDWC and DWC line are available by request, so if you need a different length or diameter for the same job it can be sourced.

Keep it indoors. The JDWC3C is AISI 1018 steel with a black phosphate finish, which is a mild corrosion coating meant for interior dry work, not weather exposure. For exterior sheathing, wet areas, or treated lumber, use a coated deck or exterior screw instead.

Case hardness runs Rockwell C45-64, which is the range hardened drywall screws are held to so the point penetrates and the Phillips recess resists cam-out under a gun. Drive with a #2 bit and a depth-setting nose piece and set the head just below the paper.

Because the trades buy it that way. Metallics lists the JDWC3C for the electrical, plumbing, heating and air conditioning trades alongside drywall-to-wood and cabinet work. Electricians use a #6 x 1-1/4 inch bugle head to mount device boxes, straps, and plates to wood framing, so it stocks on the electrical side of the truck rather than the finish side.

Slightly, yes, and that is normal. Threads run 8 to 10 per inch in a coarse UNC form. Metallics notes there is no single industry standard for drywall screw or bugle head dimensions, so the published head and thread figures are a guide and minor deviation is acceptable. It does not affect how the screw drives or holds.