LN10-21 Rear Axle Clamp Lock Nut Fits Ford New Holland Tractor 8N NAAOne New Aftermarket Replacement Rear Axle Clamp Lock Nut Fits Ford New Holland Tractors This clamp style rear axle lock nut is an improved replacement for the original snap ring style nut used on Fits Ford 8N and NAA (Jubilee) tractors. The clamp design eliminates the failure point of the original, where the retaining ring could rust or fall out and allow the nut to loosen on the axle shaft. This nut threads directly onto the rear axle shaft and