@Cointainer_Life@Oilfield_Rando Wait a minute...you're right, but the engagement in the hole is enough to keep the bolt from spinning out.
You need the tension on the nut-side...
@hatemytimeline@Oilfield_Rando Lock washer keeps the nut from backing off with vibration. The locks are installed under the bolt heads in the picture.
The more you know...
@KellyPowersBPA John 6 is describing a filter, for want of a better word.
If you reject Jesus in the Eucharist, as many if his "followrs" did that day, then the filter caught you.
The Catholics, Orthodox - they made it through, because they believe as Jesus instructed.
So go to OCIA already.