Wood Screws Double countersunk head with 6 nibs, milling ribs (U thread) and saw thread (serrated cutting teeth) SINOAN Article Number:F10032083 Brand Name:DRILLMAN OR OEM Material:Steel Surface:zinc plated Cr3+ Type:T-drive Product Details Double countersunk head with 6 nibs, milling ribs (U thread) and saw thread (serrated cutting teeth)Thread sizeM3, M3.5, M4, M4.5, M5, M6Length16 to 300mmFinishZinc Plated (clear / white / yellow), Coating (Geomet, Ruspert, Magni etc.), waxed or non-waxedStandardEN14592, manufacturer’s design etc.Otherscase harden required, bending angle 15 degree to 90 degree for choice.