A41970: Hexagonal Head BoltHexagonal Head Bolt designed for secure fastening in various construction and machinery applications. Features a thread length of 63. 50 mm (2 1 2 in), overall length of 1205. 99 mm (47. 48 in), and a head height of 12. 50 mm (1 2 in) for robust performance. Includes a UNC2A thread type, diameter of 25. 40 mm (1. 0 in), and width across flats of 44. 50 mm (1 3 4 in) for versatile use. Made from high quality general steel for durability and strength.