"P" Leads (Bogert Bendix Hex Nut)ALL P LEADS PRICED EACH P Leads are a critical part of the ignition system. They are often overlooked but are vital to safety and airworthiness. We offer new P Leads built and tested by skilled technicians using superior materials. These P Leads replace the Bendix Hex Nut type terminal typically found on Bendix S 20 series magnetos. Bogert Aviation fabricates P Leads to your specifications as an "Owner Produced Part" in accordance with FAA FAR 21.