Description M4x20mm DIN912 Carbon Steel Hex Socket Head Cap Screw. The hexagon head socket cap screws have a narrow head and are perfect for use in hard to reach areas, particularly in machine repair and maintenance. As this range is produced to 12.9 grade black self-colour high tensile steel, they are ideal when corrosion resistance is not required but a stronger more hardened material than 8.8 and 10.9 great steel is required. Brief Data: Thread Size: M4. Length: 20mm. Head Shape: Hex Socket Cap. Material: Steel. Finish: Black, Self-Color. Thread Type: Metric. Detail Specification: DIN912 Socket Head Cap Screw
