
The DIN 6901 standard, published by the German Institute for Standardization (DIN), describes the requirements for tap screw and washer assemblies .

Similarly, in the ISO 10510 standard published by the International Standards Organization (ISO), requirements for tapping screws and flat washer assemblies with ST2702 to ST2,2 pitch pitch, flat seating heads and mechanical properties as specified in ISO 9,5 standard. (ISO 10510 Flat washer lead screw and washer assemblies). Flat washers are fixed, meaning they are prevented from coming off and can rotate freely. The ISO 2702 standard defines the mechanical properties of heat treated steel lead screws.
Threaded fasteners do a more reliable job when used with washers. Most importantly, washers protect the surface from damage during installation. It distributes the pressure and prevents the fastener from moving or wearing out. Not using the washers significantly affects the life of the product.
Lead screws are designed to cut their own holes when screwing into materials, eliminating the need for drilling. This ensures a good fit between mating teeth and allows parts to be reassembled as needed.
The three basic types of tapping screws are:
Our organization, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of DIN 6901 standard, for lead screw and washer assemblies and within the scope of ISO 10510 standard, flat washer lead screw. and also provides testing services for washer assemblies.
