Bolts will usually break first if twisted enough.
It seems like if the nut went on first there'd be nothing to keep the washer on. Anyway, the the washer goes on a bolt before the nut.
How is a nut like a bolt
A bolt without a nut or a head is called a stud.
To securely fasten a carriage bolt in wood, first drill a hole slightly larger than the bolt diameter. Insert the bolt through the hole and place a washer and nut on the other end. Tighten the nut with a wrench to secure the bolt in place.
The best way is to "double nut" them. Thread one nut halfway down the bolt, then thread another down against that one. Use a wrench on the first (bottom) nut to back the bolt out.
When a nut turns easily onto a bolt for the first few threads but then becomes difficult to turn, it may indicate that the threads are misaligned or that there is debris or damage on the threads. The initial ease of movement suggests that the first few threads are engaged properly, but as the nut progresses, it may encounter resistance due to these issues. Additionally, if the bolt is bent or the nut is not compatible with the bolt's thread size or pitch, it can also cause the nut to bind. Proper alignment and ensuring clean, undamaged threads can help alleviate this problem.
you use a spanner to open a rusted nut bolt because you need a strong tool to open a rusted nut bolt.
The swirls on a nut are called threads and on a bolt they're also known as threads. These threads help the nut and bolt to grip and tighten together securely.
A nut and bolt combination forms a fastener .
A lock nut goes on a bolt with the nylon ring side facing towards the bolt head to prevent it from loosening.
To fix a cross-threaded nut, first, remove the nut carefully to avoid damaging the threads further. If the threads on the bolt are still intact, you can use a thread file or a die to clean them up. For the nut, you may need to use a tap to restore the internal threads. If the damage is severe, replacing the nut or bolt may be necessary.
Gauges to allow a person to calculate nut bolt size are widely available. Measuring the thread manually can be unreliable so it is far preferable to use a gauge.