1/4-14X1 Unslotted Indent Hex Washer Full Thread Self Drill 410 Stainless Steel Black Oxide (Pack Qty 2,000) BC-1416KW410B

Type BSD: The 18-8 stainless drill screw offers superior corrosion resistance while the 410 stainless screw will drill through harder material than the 18-8. The hardness of the material to be drilled should be a minimum of 10-20 Rockwell hardness points less than the screw’s hardness Minimum torques are the same for stainless and steel self-drill screws. Drill time is 2.5 seconds for a 1mm thick plate 410 or 18-8 stainless steelYou may also like 1/8-.031-.187 Large Flange Dome Head Multi Grip Rivet Zinc (Pack Qty 8,000) BC-X-0410Y.