The castle nut is a large nut that you screw onto the end of your rifle’s threaded barrel. It holds the handguard in place and prevents it from turning when loosening or tightening the jam nuts.

The most difficult part about removing this type of nut is figuring out how to remove a castle nut without a wrench! Luckily, there are some easy ways to do just that, with only one being more difficult than the others!

How To Remove A Castle Nut Without A Wrench?

Step 1: Drill A Hole

A castle nut is a type of fastener that secures the end or butt of the threaded rod and prevents it from undoing. If you want to remove this kind of fastener, try drilling a hole in its center first.

This method works best if there’s enough space around the nut so you can pull on it with your fingers while you drill. You can use an adjustable wrench to hold onto the head as well, but be careful not to damage the surface beneath since they’re prone to stripping when using force and tools to loosen them up!

Step 2: Cut The Nut Off With An Angle Grinder

If you don’t have any spare wrenches lying around (or if none fit), you can use an angle grinder to cut through the nut. Be careful not to damage any nearby surfaces or yourself in the process, though!

Try clamping the head of the bolt into a vice, so it doesn’t spin while you’re cutting. Wear protective glasses and gloves when using power tools—and don’t forget that they get extremely hot after being used for some time!

Step 3 Drill Into The Nut With A Power Drill

Another way is by drilling right into its center with your drill set on reverse. This method works best if there are no other objects around where you’ll be working (for obvious reasons). You may need to hold onto something else like a wrench while doing this step because it’s easy for both hands to be occupied with the drill.

Step 4: Apply Heat And Tap It With A Hammer

You can also heat up the nut and tap it with a hammer or rubber mallet to loosen things up if your other methods above don’t work so well. Make sure not to let any sparks fly when using this method, as they could cause a fire!

We recommend wearing protective gloves for this step as well so you can avoid getting burned from touching anything hot. You should have plenty of room around the head of the bolt before doing this method because everything will get really steamy!

The last thing we want is for something to pop off unexpectedly while you’re working on removing that darn castle nut!

How To Keep Your Castle Nut From Loosening Up Again?

If you want to avoid any of these methods from loosening up your nut again, try putting a little bit of permanent thread-locker onto the threads. This will keep it secured as long as you don’t apply too much or else things might get sticky and lock up tighter than ever!

You can use pretty much anything that’s meant for screws and bolts, but we recommend using an adhesive made specifically for this kind of thing. It also helps if there are no other objects nearby because they’re not designed to withstand side pressure (which is why castle nuts have flanges on each end).

Make sure to clean everything off before applying any kinds of adhesives—you wouldn’t want those chemicals to corrode the metal or your fingers!

Don’t forget to check our article about tightening castle nuts without a spanner wrench to get more tips on how to prevent your nuts from loosening up.