This is a Hand Spin Wheel Balancer Lock Nut with a quick release mechinism to fit most brands of wheel balancers. They are availble to fit wheel balancers with 28.75mm, 36mm, 38mm and 40mm diameter balancing shafts and with 3, 4 and 4.23 degree thread pitches.
Due to the amount of possible options for this part, if you require a lock nut please contact us to ensure the correct part is purchased.
In order to find the diameter of your wheel balancer shaft, simply measure the maximum width across the central section of the end of the balancer shaft itself. In order to find the thread pitch, first count out ten thread splines then measure from the inside edge of the first spline to the inside edge of the tenth spline. Take this measurement in milimeters and divide it by ten.
Shaft width = 40mm
Thread Pitch = Measurment of 40mm / 10 = 4
Lock nut required = ⌀40×4