8-18X1/2 Slotted Indented Hex Washer Full Thread Self Drill Screw 18-8 Stain Steel (Pack Qty 5,000) BC-0808KSW188

Slotted Indented Hex Washer Full Thread Self Drill Screw 18-8 Stain Steel

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