The John Deere W38686 is a genuine OEM hex flange blade bolt, specifically designed for securely attaching mower blades on a wide range of John Deere lawn and garden tractors and zero-turn mowers. This essential component ensures reliable blade retention and safe operation, featuring a 7/16-14 UNF thread and a precise length of 31.75 mm (1-1/4 inches) under the head. Manufactured to John Deere's rigorous standards, it is crucial for maintaining optimal cutting performance and equipment safety.