The RoHS directive is used to restrict certain hazardous substances in electrical and electronic equipment. The REACH regulation is a chemicals regulation that regulates the placing of chemical substances on the market.
With regard to the use of screw drives in your application, it is relevant whether one or both of the requirements must be met.
For example, newer versions of the RoHS directive stipulate that the lead content in the products must not exceed a certain level. This means that, for example, gunmetal Rg7 (CuSn7ZnPb or CuSn7Zn4Pb7-C), which is the most widely used material for trapezoidal thread nuts, can no longer be used.
junaspin is happy to support you in selecting a material for your screw drive. We are happy to provide confirmations with regard to conformity, if technically possible.