3/8-9X3/4 Unslotted Indented Hex Washer Self Tapping Screw Type A Full Threaded Zinc (Pack Qty 750) BC-3712AW

A thread forming tapping screw with wider spaced threads than a Type AB and a gimlet point For self starting in thin (.015-.050 thick) metal or resin-filled plywood.You may also like M4-1.79X10 Metric 6 Lobe Round Washer PT Alternative Fully Threaded A2 Stainless Steel (Pack Qty 2,000) BC-M410PTTRWA2.