Castlated axle nut with split pin and washer, 5/8 ins UNF, a very popular nut used on most suspension units and axles upto 750 kg.
Castelated axle nut with split pin and washer, 3/4 ins UNF, used by many popular axle manufactures, fits Avonride axle with R series hubs pre 1/5/99.
Castelated axle nut 1 ins UNF with split pin and washer, used by many popular axle manufactures, for heavy duty applications.
