What is a split ring washer used for?
Split ring washers use friction to prevent bolted joints from loosening. They feature a ring that has been split and twisted – creating two sharp edges. These washers are installed between the bolt head/nut and mating surface, the bolted joint is then tightened in the same way as an unsecured bolt.
How effective are split lock washers?
It is important to understand that the effectiveness of split lock washers is very low or nonexistent when used with heat treated fasteners of 8.8 (Grade 5) and higher. The spring rate of the washer is too low, and the edge of the washer will not dig into the hard fastener surface.
When should spring washers be used?
Spring washers are locking washers that are used when there is a need to prevent a fastener from loosening as a result of vibration. They are also often called split lock or split ring washers.
What is the purpose of a lock nut?
A lock nut is an internally threaded fastener that possesses locking capabilities either by itself or in concert with another component. By design, lock nuts are engineered to resist loosening when subjected to vibration or torque.
What can be used instead of a lock washer?
Tip: Lock nuts are nuts designed to resist loosening from vibration or torque and are sometimes used as alternatives to lock washers.
Do lock washers work NASA?
Well, there’s your problem – they don’t work! Don’t take my word for it, here is NASA concluding they do not help prevent loosening and they have known about this for decades! “The typical helical spring washer … serves as a spring while the bolt is being tightened.
When should I split my washer?
Split washers can prevent bolts from loosening due to vibrations. As a machine or piece of equipment vibrates, the split washer will push back into it. Split washers are ideal for applications involving vibrations because they prevent the bolts with which they are used from loosening.
Do spring washers do anything?
They are still used on many applications in the belief that they will will “lock” the nut/bolt to the joint and prevent loosening. The body of evidence, based upon both experience and experimental results, is that they do not prevent loosening and can be shown to actually speed up the rate of loosening in many cases.