Daggerz 14" x 1 1 2" Hex Flange Head Self Drill Screws with Rubber Washer 1000 Qty Hardware > Tools Its SDS MAX shank ensures secure Its SDS MAX shank ensures secure fitment and efficient energy transfer when used with rotary hammers The hex washer head design delivers strong clamping force and distributes load evenly across the fastening surface The 14x1 1 2 hex flange self drill screws are manufactured from carbon steel to provide structural strength under installation torque and service loads The integrated #3 self drilling point supports drilling and fastening in a single operation when installed into pre aligned metal sections