5/16-9X3 Phillips Indented Hex Washer Self Tapping Screw Type A Fully Threaded Zinc And B (Pack Qty 200) BC-3148APW

For self starting in thin (.015-.050 thick) metal or resin-filled plywood. 18-8 Stainless steel tapping screws may be used in applications which require general atmospheric corrosion resistance. Fastening stainless steel parts to aluminum or steel can cause a type of corrosion known as a galvanic couple in some environments Screws shall be quenched in liquid and then tempered by reheating to 650°F minimum Steel: Rockwell C45 minimumYou may also like 1/4-14X4 Square Recess Pan Self Drilling Screw Full Thread Zinc (Pack Qty 600) BC-1464KQP.