10/20pcs Hex Washer Head Self Drilling Screws M4.2 M4.8 M5.5 M6.3 8# 10# 12# 14# Black Zinc 410 Sheet Metal Tapping Screw

10/20pcs Hex Washer Head Self Drilling Screws M4.2 M4.8 M5.5 M6.3 8# 10# 12# 14# Black Zinc 410 Sheet Metal Tapping Screw

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