Thread size: M4
Length: 40 mm
Head shape: Internal hexagon
Material: Steel
Finish: Bright zinc-plated
Thread type: Metric
Thread pitch: 0.7 mm

Threads comply with DIN standard 912 / ISO standard 4762. Requires an internal hexagon key. We offer a wide range of bright zinc-plated internal hexagon screws available in various thread sizes and lengths. Details can be found in the data sheet and series overview. If bright zinc-plated steel is not what you are looking for, we also offer internal hexagon head screws made of plain steel, titanium, and stainless steel A2 (304) and A4 (316) (all according to DIN standard 912). Bright zinc-plated internal hexagon screw with metric thread, 12.9. The RS Pro internal hexagon screws have a narrow head and are perfect for use in hard-to-reach areas. This fastening element is an excellent choice for the repair and maintenance of your machines. The series of hexagon head screws is made of bright zinc-plated steel grade 12.9 with high tensile strength and is ideal when high corrosion resistance is not required, but a stronger, harder material than 8.8 or 10.9 is needed. Features and benefits: Can be used instead of hexagon screws with less play. Internal hexagon screw – the strongest of all head designs. The head height corresponds to the shaft diameter. Typical applications: Machine tool construction and repair, safety protection, household applications, facilities, and maintenance work.