Hex Nut-Flanged Torque-Class 10- M12-1.25 x 18mm. Dorman Nut. NOT ACQ Rated; NOT FQA Compliant. Callout Size: M12-1.25; Size: M12. Extra 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.