Blade Bolt (Self Locking) - Fits Various:

New Idea 5209, 5212, 5312, 5406, 5407, 5408, 5409 & 5410

Bush Hog DM70, DM80, DM90

Hesston (check serial number) 1004, 1005, 1006, 1007, 1008

Massey Ferguson (check serial number) 1306, 1307, 1308, 1309, 1310, 1326, 1327, 1328, 1329, 1330

rpls/references: 527745, BK001. 3/8"x7/8", Gr8, Fine Thread

NOTE: This item is no longer offered from Rick's Ag Parts, (CLICK HERE) to be directed to new site