Metallics JTEKD22V 10 x 2 in. 5/16 Indented Hex Head Self-Drilling & Tapping Screws with Washer - #3 Drill Point - Steel Zinc - Each

Both the Buy American and ARRA compliance flags are marked compliant on the JTEKD22V. Country of origin is listed as multiple, so if your submittal package needs a single named origin, request documentation on the specific lot you receive.

At 2 in. of overall length, most of the JTEKD22V is thread that will project behind thin steel, which matters in a stud bay or on the back side of a channel. Use the length when you are stacking material, for example clamping a thicker bracket, spacer, or plywood backing down to a steel panel of 0.110 to 0.175 in. For fastening sheet directly to sheet, a shorter #10-16 self-driller is the cleaner choice. Head height is only 0.105 to 0.12 in. plus the washer, so the profile stays low.

A 5/16 in. hex driver or nutsetter. The head is an indented hex with a hex drive, head width 0.305 to 0.312 in. and width across corners 0.34 in. There is no cross or slot recess intended for driving, so run them with a hex socket in a screwgun or impact.

Yes, the washer is integral to the head. Washer outside diameter runs 0.384 to 0.414 in. with a thickness of 0.019 to 0.031 in., so you get a bearing surface wider than the 5/16 hex itself without adding a loose part to the job. Nothing to thread on separately.

They ship as a jar of 500 pieces, and 500 count is the order minimum, so this is a bulk buy rather than a handful off the shelf. The packed jar weighs 6.4 lbs.

Head and body dimensions follow ASME B18.6.3-2010 and the thread follows SAE J78-2013. Steel is AISI 1016 to 1024, case hardened to Rockwell C32-40, with a minimum torsional strength of 61 lb-in. Note that SAE J78 does not cover #7 diameter drill screws, so a #7 callout on a drawing will not map to that spec.

It is a UNC machine screw thread at 16 threads per inch, which is the standard #10-16 self-drilling (Type BSD) pitch. The point drills its own hole and the threads tap it as the screw advances, so no pilot hole and no separate tap are needed in the 0.110 to 0.175 in. panel range.

The JTEKD22V is zinc plated carbon steel with a silver head, which suits dry interior electrical and structural steel work, strut hangers, box mounting, and panel work. Zinc plating is not a marine or sustained-wet finish, so for exterior exposure or washdown areas specify a stainless self-driller instead. Driving torque is the same for stainless and steel self-drillers, so you lose nothing on install speed by switching.

Reference drill time is 2.5 seconds through a 1 mm thick plate. Thicker stock inside the 0.110 to 0.175 in. rated range takes longer, and heat is the thing that kills points, so use steady pressure and let the #3 point cut rather than leaning on the gun.