Metallics JTEKD93SS 14 x 2 in. 5/16 Indented Hex Head Self-Drilling & Tapping Screws with Washer - #3 Drill Point - 410 Stainless Steel - Each

The Metallics JTEKD93SS carries a #3 drill point, which is the mid-range point used for heavier gauge steel work rather than thin sheet. Metallics states drill time of 2.5 seconds through a 1 mm thick plate. At 2 inches of length with a 14 diameter, it is intended for fastening into structural or heavier framing members where a #2 point would stall.

These are 410 stainless steel self-drilling screws, so they hold up far better than plain zinc-plated carbon steel in wet or exterior work. 410 is a hardenable martensitic stainless, which is what lets it drill its own hole and still resist corrosion, with a hardness of Rockwell C38-46. It is not as corrosion resistant as 300 series stainless, so for coastal or chemical exposure check your spec.

The JTEKD93SS is flagged both ARRA compliant and Buy American compliant, which is what a government, school or healthcare procurement office typically needs on the submittal. Country of origin is listed as multiple.

It is an integral metal washer, 0.480 to 0.520 inch outside diameter and 0.030 to 0.050 inch thick. That spreads the clamp load over a wider bearing surface, which matters when you are fastening strut, brackets or plate. There is no bonded rubber or EPDM element, so if you need a weather seal on a roof or wall panel you want a sealing washer screw instead.

The JTEKD93SS ships in a jar with a 100 count order minimum, so 100 pieces is the smallest increment. Metallics notes other sizes and quantities are available by request.

Dimensionally they are built to ASME B18.6.3-2010, with threads to SAE J78-2013 in UNC form. That is the pairing a spec writer looks for on a Type BSD self-drilling and tapping screw. Note that SAE J78 does not cover #7 diameter drill screws, so if your drawing calls out a #7 there is no J78 thread spec to cite.

No. This is a Type BSD self-drilling and tapping screw with a drill point, so it cuts its own hole and forms its own thread in one pass. One tool, one operation, no pilot drilling and no tapping step.

Yes, on torque. Metallics states minimum torques are the same for stainless and steel self-drill screws, and these 410 stainless screws are hardened to Rockwell C38-46 so the point stays sharp enough to cut steel. You get carbon steel driving behavior with stainless corrosion resistance.

A jar runs 2.44 lbs, and the package measures 3.5 x 3.5 x 5.75 inches. Useful if you are kitting van stock or batching a shipment of fastener jars for a multi-site job.