A: Not directly. ISO 4156 covers involute splines but is based on a different system (reference diameter, module, and pressure angle). Always check compatibility.
A: The PDF will clarify that serrated flanges provide "locking" action against hard steel surfaces. Non-serrated flanges are used for soft materials (aluminum, plastic) or where the surface must not be scratched. din 5464 standard pdf
If you are writing a purchasing spec or drawing, here is the correct way to call out a DIN 5464 nut: A: Not directly
Example: Hexagon flange nut – DIN 5464 – M12 x 1.5 – 10 – A3C Example: Hexagon flange nut – DIN 5464 – M12 x 1
Important: If you are working in an international context, check if the customer will accept a non-ISO standard. Some global OEMs strictly forbid DIN-only standards. In that case, you may need to specify fine-pitch flange nuts using a custom drawing reference, not a standard number.
Important disclaimer: While many websites promise a free PDF of DIN 5464, most are either incomplete, low-resolution scans, or outdated versions (e.g., the 1986 version, which has been superseded). Using an obsolete standard can lead to design failures.