Hex Head Self Drilling Screw + EPDM Washer:5.5 x 100mm (4") - DIN 7504K

This hex head self-drilling screw features a 5.5mm nominal diameter and 100mm length, conforming to the DIN 7504K standard. Constructed with an integrated EPDM washer, it is designed for fastening metal substrates without pre-drilling or tapping. Buyers select this fastener for its ability to create its own thread and seal against moisture in a single step. The hex head allows for driving with standard wrenches or impact drivers, ensuring secure tightness. Choose this size and grade based on the thickness of the material and the required clamp load for your specific assembly.