Measuring a spark plug to determine repair insert size - Help with stripped sparkplug threads - Wise Auto Tools LLC
Amazon.com: M3 x 14mm Socket Head Cap Screws, Stainless Steel 18-8 (304), Allen Socket Drive, Full Thread, Bright Finish, 50 PCS : Industrial & Scientific
Basic Thread Concepts | Park Tool
Thread Chart (Metric) | Major and Minor Diameters
Clearance 304 Adjustable Pin 14mm Diameter With M10 Thread