Cylindrical head bolt - is a fastening consisting of a metal stud with incomplete metric thread and a high cylindrical head with a slotted star-shaped torx.
Material: high-strength structural alloy steel. High strength class 8.8 allows the use of bolts for high-load connections.
Usage: mechanical engineering, instrument making, machine tool making, etc. in knots where the hat smaller on height is necessary. Such a hat is easier to "drown" in the landing hole. And the torks connector gives the chance to increase efforts at twisting
Coating: Zinc (Plated) protects against corrosion if you plan to use fasteners in aggressive conditions.