Description Disc Mower Bolt. Fits: Bush Hog: Disc Mower: DM70, DM80, DM90, GHM700, GHM800, GHM900, MTH600, GHM1800, GHM1900, MTH720; New idea: Disc mower: 5212 (s/n 16013 & on), 5312, 5406, 5407, 5408, 5409, 5410 (s/n 1007482 & on). This item is a suitable alternative for the following: 798-RF527745, 527-745, 527745, 527745T, 846619, 904-609B, A-527745K, A527745K