Bolt kit, includes keyed bolt and lock nut with nylon collar. 1-1/8 inch-12 thread size, 3-1/2 inch overall length, 1-3/8 inch thread length, .9375 inch (15/16 inch) shank length thru carrier, .556 inch (9/16 inch) blade mount length, 1/2 inch head thickness, 2-1/2 inch head diameter, 1.492 inch blade mount diameter (for 1-1/2 inch blade hole), 1.122 inch bolt shank diameter.