Metallics DSK12 Screws 245-Pc 12 Sl Hwh Sms Kit St-zn (Trey 1)

The DSK12 tray holds 245 pieces of #12 hex washer head slotted sheet metal screws: 75 at 1/2 inch, 50 at 3/4 inch, 45 at 1 inch, 30 at 1-1/4 inch, 25 at 1-1/2 inch and 20 at 2 inch. A 5/16 inch by 1-5/8 inch hex nut driver is packed with it, so you can run the screws with a drill right out of the tray.

These are thread forming tapping screws with a gimlet point, made to self start in thin metal from 0.015 to 0.050 inch thick, or in resin-filled plywood. Above that thickness range you are into pilot hole territory, and a Type AB or self-drilling screw is the better choice.

No. The DSK12 kit is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On federally funded work with domestic sourcing requirements you'll need a domestically produced fastener instead.

Type A thread forming screws have wider spaced threads than a Type AB. The DSK12 screws run 11 threads per inch at #12 diameter with a gimlet point, which bites and forms its own thread in thin stock. Type AB, with its finer thread and blunter point, is the one to reach for in slightly heavier gauge or where a tighter thread engagement is wanted.

Both. The head is a hex washer with a slot, so a 5/16 inch nut setter or the included 5/16 x 1-5/8 inch hex nut driver works, and a slotted screwdriver works for hand finishing. Head width runs 0.305 to 0.312 inch across the flats with 0.34 inch across corners, head height 0.139 to 0.155 inch, slot width 0.056 to 0.067 inch and slot depth 0.077 to 0.093 inch.

The screws are steel with a zinc finish, which suits dry interior electrical, plumbing and HVAC work. Zinc plating gives limited corrosion protection only, so for exterior exposure, wet locations or coastal work use a stainless or hot dip galvanized fastener instead.

Dimensions follow ASME B18.6.3-2010 with threads to ASME B18.6.4, material is AISI 1016-1024 steel case hardened to Rockwell C28-38, and minimum torsional strength is 83 lb-in. Note that the dimensions given for #9 diameter sit outside ASME B18.6.4.

It ships as a tray measuring 8 inches long by 4.62 inches wide by 1.25 inches high and weighing 2.47 lbs, so it drops flat into a standard van drawer or the lower pocket of a tool bag. Minimum order is 1 each.

Yes, other sizes and quantities of the Type A hex washer head sheet metal screws are available by request. The DSK12 tray is the #12 diameter assortment with six lengths from 1/2 inch to 2 inch; if you are repeating one length on a large job, a single-size bulk box makes more sense than the kit.