Metallics WDW3B 8 x 1 in. Wafer Head Phillips Sharp Point Drywall Screws - Steel Zinc - Each

Sharp point is what the WDW3B uses, so it is meant for wood framing and light gauge steel studs it can pierce on its own. It is classed as a self-piercing and tapping drywall screw, so it forms its own hole and thread as it drives. For heavier gauge steel you want a drill point (self-drilling) screw instead, since a sharp point will walk or snap before it penetrates thick stock.

The WDW3B goes out at a 10,000 piece minimum, each, supplied in box pack. That is a bulk buy sized for a crew or a stocking shelf rather than a single repair. Metallics offers other sizes and quantities in the WDW series by request.

No. The WDW3B is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your job carries domestic sourcing requirements, this screw will not satisfy them.

The wafer head on the WDW3B sits low and spreads load over a large bearing surface, which is what you want when you are fastening sheet material or light bracketry and cannot have the head pull through. Head width runs 0.426 to 0.446 in. with a head height of 0.082 to 0.098 in. A bugle head, by contrast, is shaped to countersink itself into gypsum paper for a flush finish. If you are hanging board for taping, a bugle head is the better choice; if you need clamping over a thin flange, use the wafer.

A #2 Phillips bit drives the WDW3B, and three power bits ship with the order at no extra charge. Standard cordless screw guns and drywall guns take the bit directly.

Zinc plating over steel is the finish on the WDW3B, which handles normal interior conditions and incidental moisture. It is not a coating for sustained exterior exposure, pressure treated lumber, or wet locations; for those use a hot dip galvanized or stainless fastener.

Case hardness is Rockwell C28-38 with a minimum torsional rating of 45 Kg/cm, and the steel is AISI 1018-1022. That combination is what lets the point tap its own thread without the Phillips recess camming out, provided you use a #2 bit and keep the gun square to the work.

Yes. Metallics lists the WDW3B for the electrical, plumbing, heating and air conditioning trades, and the large bearing surface of the wafer head is what makes it work on strap, clip and bracket flanges where a bugle head would pull through. UNF thread form, sharp point, #8 x 1 in.

A 10,000 count box of the #8 x 1 in. WDW3B runs 59 lbs, with carton figures of 19 x 8.25 x 8 in. Worth knowing if you are planning a shelf location or a hand carry to an upper floor.

Metallics notes there is no single industry standard for self-piercing screw dimensions, so the published head height of 0.082 to 0.098 in. and head width of 0.426 to 0.446 in. are given as ranges and minor deviation can occur. If a drawing calls out an exact head dimension, read it against those ranges before you commit the order.