Self Tapping Screws. Premium Hex Head Self Drilling Screws (DIN 7504K) available in 3.5mm (No. 6), 4.2mm (No. 8), 4.8mm (No. 10), 5.5mm (No. 12), and 6.3mm (No. 14). Head sizes: 8 Gauge = 7mm, 10 Gauge = 8mm, 12 Gauge = 8mm, 14 Gauge = 10mm.
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