Metallics JOHP12SS Screw 12 x 1-1/2 Oval Head Phillips (Jar 100)

It's a #12 x 1-1/2 inch oval head Phillips screw, supplied 100 to a jar. One jar covers a full day of device plate, strap, or box mounting without reopening a bulk box on the truck.

They take a Phillips driver. At #12 diameter a #3 Phillips bit is the normal fit, with a #2 working at a pinch but more likely to cam out when you're setting a 1-1/2 inch screw into wood.

Oval head, like the #12 x 1-1/2 Phillips in this jar of 100, has a rounded crown over a tapered underside, so it countersinks partway and leaves a low dome proud of the surface. Use it where you want the head to seat into a chamfered hole but still show a finished profile. Go to a flat head instead when the head must sit dead flush, and to a pan or round head when the hole isn't countersunk at all.

Order Metallics JOHP12SS. That's the jar of 100 in the #12 x 1-1/2 oval head Phillips size, so quantity is per jar, not per piece, when you're building out a fastener order.

Yes, the JOHP12SS is carried as an electrical fastener, the general-purpose screw electricians reach for when mounting boxes, straps, brackets, and plates rather than a specialty self-drilling or masonry anchor. For concrete or block you'd need a masonry screw or an anchor instead.