DOP530015917 Poulan/Poulan Pro 2200 and 2500 Bar Nut. This is a true OEM Poulan/Poulan Pro Bar Nut. Used on Poulan/Poulan Pro Chain saw models 2200, 2500, 2600, 2750, 2775, 2900, 3050, 255, 295, 310, 315, 2025, 2350, 810 EP Pole saw, 210, 338T, 3314, 3416, 3516, 3816, 3818, 4018, 1900, 1950, 1975, 2150. Replaces Part# 530015917.