Can I use this fork if the steerer isn't quite the right height?

Question

I have this threaded fork that only reaches the top of the head tube.

I can fit the first part of the headset (see photo) but no other nuts (?).

Can I use it like this ?

Answer 1

Can I use it like this?

Yes, you can use it like this.

But, if you do the top adjustable cup will loosen as you ride causing:

1. Damage to your headset bearings
2. Damage to bearing surfaces
3. Damage to the head tube. The head tube can become oval shaped so your headset cups won't fit correctly.

Don't ask me how I know :)

A fork with the correct length steerer tube is the best option. You need a different fork.

Picture screen shot from Pintrest