Metallics JFW56 6 x 1-1/2 in. Flat Head Slotted Wood Screws - Steel Zinc - Each

Yes, that is what the flat head is for. On the Metallics JFW56 the head measures 0.244 to 0.279 in. across with a head height of 0.083 in., so it seats fully into a standard 82 degree countersink and finishes flush with the surface. Drill or countersink to at least the 0.279 in. upper head diameter so the larger screws in the jar still pull flush.

Slotted only. The JFW56 takes a flat blade driver, with a slot 0.039 to 0.048 in. wide and 0.024 to 0.038 in. deep. If your crew is running impact drivers with bit holders, a slotted screw will cam out on them, so hand drivers or a low speed drill with a slotted bit is the practical way to set these.

These are steel with a zinc plated finish, which is a dry location, indoor grade coating. Zinc plating will corrode in exposed or damp conditions, so for exterior trim, decks, or treated lumber choose a hot dip galvanized or stainless screw instead. For interior boxes, straps, panel work, and wood trim, the zinc finish is the normal choice.

The JFW56 ships in a jar of 100 screws, which is also the order minimum (100 count). Pack weight is listed at 0.57 lbs.

On the JFW56, with a length over 1 inch, roughly two thirds of the shank is threaded at 18 threads per inch, leaving an unthreaded shank under the head. That shank is what lets the screw draw two pieces of wood tight together, so pilot the top piece at clearance diameter and let the threads bite only in the lower member.

They do. The JFW56 is built to ASME B18.6.1, with threads per ASME B18.6.1-1997, so head dimensions, slot geometry, and thread form follow the published wood screw standard rather than a house spec. That is the citation to put on a submittal.

The JFW56 carries a Buy American compliant flag and an ARRA compliant flag in its product record, with country of origin listed as China. Procurement officers on federally funded work should take both the compliance flags and the origin into account for their specific contract clause.

The JFW56 has a tapered point, the traditional wood screw gimlet style rather than a self drilling type point. In softwood you can often start it directly, but in hardwood or near an edge drill a pilot, because a tapered point screw with no pilot will split the stock.

At 1-1/2 in. long with about two thirds of that threaded, the JFW56 puts roughly an inch of thread into framing after passing through a box flange or strap, which is the usual depth for mounting device boxes, straps, and clamps to wood studs. It is an electrical department fastener and the flat head keeps it from fouling a box edge or cover plate.

Yes. The JFW56 itself is the 6 x 1-1/2 in. flat head slotted screw, and other sizes and quantities in the JFW series are available by request. Specify gauge, length, and the count you want when you ask.