Cast iron self-tapping screw DIN 939 M12x90-8.8

Product detailed description

The cast iron stud bolt according to DIN 939 with dimensions M12x90 and strength class 8.8 is designed for fixed connections in blind holes. This component is made of steel without surface treatment, which means that it is suitable for applications where additional corrosion protection is not required.

The screw has a metric thread with a diameter of M12 and a pitch of 1.75 mm. The total length of the screw is 90 mm, while the length of the thread at the end intended for screwing into cast iron is 30 mm. This end is longer, which allows for a firm and stable anchoring in the material. The other end, intended for mounting the part, is shorter, which is typical for stud bolts according to this standard.

The width of the screw head is defined by the parameters: width a is 2.2 mm, width c is 4.3 mm and width e is 15 mm. These dimensions are critical for the correct fit and function of the bolt in the structure.

The strength class 8.8 indicates that the bolt has a yield strength of 640 MPa and a tensile strength of 800 MPa, which makes it suitable for use in applications where high mechanical properties are required.

This type of bolt is ideal for use in engineering and construction, where it is necessary to ensure a strong and reliable connection in cast iron components. Its design allows for easy assembly and disassembly, which is advantageous during maintenance and repair of equipment.