Description Bolt with Nut, Disc Mower. Standard pack of six. Use with blade numbers: 526215, 526216, .Fits: Bush Hog: Disc Mower: 526,527, 528, 5209, 5212, 5406, 5407, 5408, 5409, 5410, DM7, DM8, DM9, DM18, DM19. New Idea: Disc Mower: 526, 527, 528, 5209, 5212, 5406 This item is a suitable alternative for the following: 527733WN6