Wheel Stud Product Specifications Metric Thread Size: M22 × 1.5 Thread Diameter: 22.0 mm Thread Length: 101.5 mm Threads per Pitch: 1.5 mm Grade: 10.9 Type: Headed Head Style: Round Head Diameter: 36.5 mm Head Thickness: 10.5 mm Body Diameter: 0.988 in. Body Length: 132.0 mm Overall Length from Under Head: 5 3/8 in Serration: Serrated Serration Diameter: 25.65 mm Serration Length: 15.24 mm