This blog post will talk about how to drill out a grade 8 bolt. We will also provide helpful tips and advice to make your life easier when trying to drill out a grade 8 bolt. When it comes to drilling out a grade 8 bolt, you may not know what size drill bit or how much pressure is needed.

How to Drill Out a Grade 8 Bolt

Here’s the step-by-step guide to drilling out a grade eight bolt.

Step One

Drill pilot hole first! You cannot drill through the center of this type of bolt without hitting the metal threads inside it, so you must use pilot holes first. (Do NOT skip step one if you want your workpiece intact.)

The best way to proceed is by using a drill bit with less than half an inch in diameter for larger bolts and drills that are smaller but still slightly bigger than what would fit into your nut or through-hole.

The goal is to make sure that there’s room enough on both sides of the threaded part for you to screw up at least two opposing teeth from each side before starting on the actual threading process itself. inches away from either end of the bolt.

Step Two

The next step is to use a center punch tool for marking out where you are going to drill your hole so here’s what you do! You want to put the tip of this tool on each mark made and give it one or two sharp taps with a hammer to create an indentation both above AND below the surface level.

This will allow the drill bit better guidance when it comes time for drilling out those threads which shouldn’t take too much effort now that things have been prepared properly by making these pilot holes first before anything else.

Step Three

Now that everything has been marked off as well as drilled through using smaller pre-drilled holes (using either manual drills or power drills at this point), it’s time to move on to the next step.

You want to use a larger drill bit than what you used previously and go very slowly, making sure that everything is lined up perfectly each time before continuing further one centimeter at a time until you’ve reached about halfway through your threaded part.

If done properly, the only thing holding these threads together should be some residual metal left stuck onto either side of them which shouldn’t take too much effort for you to break apart without any resistance by using needle-nose pliers or wire cutters towards whichever end (if possible).

Step Four

The final step! Now that there are no more threading connections between both ends itself, all that remains now is breaking off the excess metal that’s still stuck onto either side of where the threads used to be.

You can do this by using a pair of pliers, but you may risk putting too much pressure on one end and accidentally snapping your bolt in half entirely if you’re not careful about it.

Drilling Out A Grade 8 Bolt

There are several reasons you may need to drill out a grade eight bolt. Perhaps the head has broken off or gotten stripped, maybe it is rusted in place, or perhaps someone else tried to remove it and failed miserably.

There are three different types of drills for any of these situations that can be used for this task: Standard, Cordless, or Pipe. The standard one is the most common and the cheapest.

Next is a cordless drill, which will be more powerful than a standard one but may require multiple batteries to complete this task (most only last about an hour).

The third type of drill is for those who know what they are doing and can handle it; this is a pipe that you attach your bit to.

Here are some helpful tips that can be used for any of the drills:

If you are using a standard drill, then first make sure it has an Allen key bit. These bits fit perfectly into grade eight bolts and allow them to grab on, so they don’t slip while spinning in place. Make sure your drill is set to reverse direction before starting this task!

This will help cut down on potential damage done by stripping or breaking off more bolt heads than intended. Start slowly at first; if possible, use clamps around the object being drilled out as another form of support for both safety purposes and because it may actually be necessary depending on what type of material you’re drilling through (i.e. metal vs. wood).

If there was already someone else who tried to drill out the bolt, then it may be in your best interest to soak the area around where you’re about to drill with penetrating oil. This is essentially a type of liquid that will help break down any rust or corrosion on bolts and other metal surfaces.

If you are using cordless drills, then make sure they have high-quality batteries inside them; Just like anything else when drilling through hard objects (i.e.: steel vs wood), these things get hot very quickly if not cooled by an adequate battery so extended periods of use can damage both your tool and what’s being drilled into depending on how long it takes one of these tools to “run” its course.

If this becomes necessary for longer than expected amounts of time, just take short breaks every once in a while to let the drill do its thing without having to work so hard. Finally, if you are using pipe drills, make sure they have plenty of power behind them. The more powerful these are, the better off your project will be when it comes time to put everything back together again.

If you’re doing this job on something other than metal (i.e. wood or plastic) then there’s no need for any type of drill bit whatsoever because none will fit into whatever material is being used unless it has an extremely small diameter size which would not even require clamps around what needs to be drilled out since nothing could get through anyways!

We hope that these helpful tips and advice were enough to get the job done. You can also check our post about how to drill hardened tool steel and how to extract broken drill bits.