J1965_201503 Road Vehicles - Wheels for Commercial Vehicles and Multipurpose Passenger Vehicles - Fixing Nuts - Test Methods

This SAE Recommended Practice provides the test methods for evaluating wheel/rim attachment systems using ball seat, flange or rim clamp fasteners (fixing nuts). The proof load values are calculated from the externally threaded fastener of grade 8 or class 10.9. In Table 2 the initial tension value B represents the minimum tension required to provide proper minimum joint performance. A new value, D final tension minimum, has been added to Table 2. These minimum tension values are an extension of the minimum tension line developed at value B. This ensures that the performance of the joint does not fall off as torque is increased. The retorque test has had the number of tests required increased from 5 to 10. The time between tests has been increased from 1 minute to 5 minutes to minimize the effects of heat increasing the lubricity of the motor oil.