Frame & Cycle Parts > Husqvarna
D12mm Twin Shock Swing Arm Spindle / bolt and (2) M12 x 1 pitch Nuts. 151077401 / 15-11-774-01
Made 4mm Longer so you can add a Washer to the outside both ends for a better fixing.
D12mm Twin Shock Swing Arm Spindle / bolt and (2) M12 x 1 pitch Nuts & Washers. About 1979 to end of Twinshock bikes. As pictured