Hex Nut-Class 8- Thread Size: M14-1.50, Height 11mm. Dorman Nut. NOT ACQ Rated; NOT FQA Compliant. Callout Size: M14-1.50; Size: M14. Fine Thread. Dorman offers a comprehensive variety of nuts for almost any automotive fastening job. All our nuts are constructed of high-quality materials for long-lasting durability.