M1.6M2M3M4M5~M20 Socket Countersunk Screws Hex Allen Key Bolt High Tensile 10.9

Thread Pitch:M2(0.4mm) / M2.5(0.45mm) /M3(0.5mm) /M4(0.7mm) / M5(0.8mm) / M6(1mm) / M8(1.25mm) / M10(1.5mm)/ M12 (1.75mm) / M16(2mm) / M20 (2.5mm). Surface: Blackened. Material:10.9 grade high strength carbon steel.

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