#10 Hex Washer Head Self Drilling Screws #3 Drill Point Stainless Steel 410 Black Painted Head

#10 hex washer head self drilling screws (tek screws) with a #3 drill point, in 410 stainless steel to IFI-113. The drill point cuts its own hole and the self-drilling thread (10-16) taps it in one step, with no pilot hole, in steel about 0.100" to 0.175" thick (12 to 7 ga). The hex head has a built-in washer face that spreads the load, with a 5/16" external hex for a nut driver or socket. The head is painted black to match fencing, siding and roofing panels. 410 is the standard self-drilling stainless: hardened so the point drills steel, and magnetic, with lower corrosion resistance than 18-8 or 316. 2 lengths (3/4" to 1-1/2"). Sold in production-volume bulk packs.