Nut 5/16" 18 thread. PART TYPETools & Hardware. MANUFACTURER PART NUMBERN-100.
Reliable Machine Flange Lock Nut 7/16-20 FLN-437
Reliable Machine Spindle Nut Lock Shield LSB13
Reliable Machine U-BOLT Square 2-1/8" Inside X 4-1/2" Long UB-S-220
Reliable Machine Cotter Pin 1-5/16 By 3/8 SCP103
Reliable Machine Axle Tie Plate - Square Axle TP-S-220
Reliable Machine Bolt 5/16-18X3-1/2" Long B-100