Metallics JRWS9V 8 x 1 in. Round Washer Head Combo Sharp Point Tapping Screws - Steel Zinc - Each

The JRWS9V is a #8 diameter screw, 1 inch long, with a sharp point for tapping into sheet metal and similar materials. Head is a round washer style with a combo drive.

Yes. The head takes both, it's a combo drive with Phillips and square recess, so you can run them with a #2 Phillips or a square driver, whichever is already in the gun. The square recess is the one that resists cam-out when you're overhead on strut or panel work.

The round washer head spreads the bearing surface wider than a plain pan head, so it holds down thin sheet metal, plated straps, and slotted mounting holes without pulling through or chewing the edge. That's the reason it shows up on electrical box and device mounting work. The JRWS9V pairs that head with a sharp point, so it starts in sheet metal without a pilot.

They're zinc plated steel, which is a mild indoor and protected corrosion finish. Fine for interior electrical rooms, panel work, and dry mechanical spaces. For direct weather exposure, wet locations, or treated lumber contact, go to a stainless or hot dip galvanized fastener instead.

No pilot hole is needed in sheet metal or wood, the sharp point on the JRWS9V starts and taps its own thread. What it will not do is drill steel, so for structural steel or anything heavier than light gauge, use a self-drilling point screw instead of this sharp point type.

They ship in a jar, 500 screws, which is the format most electricians keep on the van or on the shelf in the shop for daily box, strap, and plate work.