410 Stainless Steel Hex Self Drill Screw 12-24 x 2" #5 Point 100 Pieces. 12-24 x 2" screw for drilling into up to 1/2" steel. It's hard to believe but these screws will drill into steel up to 1/2" thick. Best results with high speed, impact drivers work well. Perfect for mounting gang boxes, plywood backboards and more to steel columns. 410 Stainless steel. Please note: 410 stainless steel will exhibit a slight magnetism
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