New Ultimate QM Online Store › King Pin Set Screw Image 1 of 1 King Pin Set Screw $1.50 Replacement 1/4-20 set screw for front axle. Part# HD105 Add To Cart Added! Replacement 1/4-20 set screw for front axle. Part# HD105 More Great Products Spindle Arm Aluminum - Left $21.00 Spindle Arm Aluminum - Right $21.00 Camber Caster Complete Front Axle Kit $385.95 Standard Front Axle $149.95 Spindle Bushing - Bronze $3.00