DeWalt ULTRACON+‚® SS4 1 4" x 2 1 4" 410SS Hex Washer Head Screw Anchor 100 Qty Hardware > Tool Accessories > Drill & Screwdriver Accessories > Drill & Screwdriver Bits The ELCO BI FLEX® 12 14 x The ELCO BI FLEX® 12 14 x 1 1 2" 3 Point Hex Washer Head Self Drill Screw(EAJ220) is designed for high performance metal to metal fastening applications the anchor provides increased bearing surface and secure clamping force Featuring a robust 410 stainless steel construction and a hex washer head for increased torque and grip this screw anchor also has a Stalgard coating that enhances its durability in harsh environments