Shoulder Screws Hex Nuts for Generator Interlock kit 4pcs, Compatible with Most Breaker Panel Box, Best Screws and Nuts for Most Generatoer Interlock kit Panel or DIY Generator Interlock kit.: Amazon.com: Industrial
DIN 912 / ISO 4762 Professional cylinder with hexagon socket, part or full thread, grade 8.8, galvanised, hardened steel : Amazon.de: DIY & Tools