Metallics DWC4B 6 x 15/8 in. Bugle Head Phillips Drywall Screws - Steel Black Phosphate - Coarse Threads - Each

Coarse thread is the wood stud option. The DWC4B is a coarse, UNC thread with a sharp point, and Metallics lists its field applications as wood to wood, drywall to wood, and cabinet installations. On light gauge metal studs you want a fine thread drywall screw instead, since coarse threads tend to strip or spin in sheet steel.

No. Black phosphate is a dry interior coating, not a corrosion barrier, and the DWC4B is a black phosphate steel screw. Use it for interior board, wood to wood, and cabinet work. For exterior decks, soffits, or anywhere that sees moisture, order a coated or galvanized exterior screw instead.

A #2 Phillips. The DWC4B recess is 0.176 to 0.201 inch in diameter and 0.106 inch deep, which is standard #2 Phillips geometry. Metallics includes three power bits with the box, so you are covered for the first runs before you have to pull spares from the truck.

That is what the bugle profile is for. The DWC4B head is 0.315 to 0.347 inch wide with a head height of 0.020 to 0.031 inch, so it is a wide, shallow curve that seats into the paper face and leaves a dimple you can skim with compound instead of cutting through it. Set your screw gun depth stop rather than driving by feel.

The DWC4B ships as a box of 5,000 screws, with an order minimum of 5,000 each, and the box weighs 23.4 lbs. Metallics notes other sizes and quantities are available by request, so a smaller count on the same screw can be asked for.

No. The DWC4B is listed as not Buy American compliant and not ARRA compliant, with country of origin shown as multiple. If you are buying for a federally funded job with domestic sourcing requirements, this screw will not satisfy it.

The DWC4B is case hardened to Rockwell C45-64 and made from AISI 1018 steel, which is the normal hardened drywall screw spec. That hardness is what lets the sharp point pull into framing and the recess hold a #2 bit under power. It also means the screw is brittle in shear, so these are a board fastener, not a structural fastener.

Expect small variation. Metallics states outright that there is no single industry standard for bugle head or drywall screw dimensions and that its published figures are a guide with acceptable deviation. Practically, the head width of 0.315 to 0.347 inch and #2 Phillips recess put the DWC4B in line with standard #6 drywall screws, so your existing bits and depth setting carry over.