The John Deere A78210 Stud is an original equipment manufacturer (OEM) part designed for secure fastening within John Deere planter axle and opener assemblies. This genuine stud ensures reliable performance and proper fitment for various John Deere planter models, including the 1700, 1710, 1720, 1730, 1750, 1760, 1770, 1780, 1790, 7000, 7100, 7200, 7300, 7400, 7500, 7900, 9000, 9100, 9200, 9300, 9400, 9500, 9600, 9700, 9800, and 9900 series. Weighing approximately 0.12 kg and measuring 95 mm in length, this stud is crucial for maintaining the integrity and functionality of your agricultural equipment.