Easily Drill Extremely Hard Materials With Our Carbide Tip Drill Kit

Brute force and big tools aren’t always the solution for heavy-duty jobs.

Those of us who’ve dealt with broken fasteners—especially high-grade steel—know this issue requires a combination of the intended tools and precision rather than strength.

Forget about time-consuming techniques like welding another bolt to the broken one or relying on a left-handed drill bit to see if the bolt comes out by luck. The most efficient way to remove a broken bolt is to drill it and use an extractor.

At Fortis, we have the best carbide tip drill kit to prepare those high-grade broken bolts and studs for your favorite extractor: the Mueller Kueps Carbide Tip Drill Kit.

Let’s break down its superior design and quality over the competition.

The heavy-duty industry requires tough materials. Among such materials are 12.9 high-grade bolts.

Due to their high strength, hardness, and resistance against fatigue and corrosion, manufacturers use 12.9-grade bolts in demanding applications such as engine parts, gearbox assemblies, vehicle suspensions, and heavy machinery. But even high-grade bolts break, and they usually do so flush or below the threaded hole.

Besides, 12.9-grade bolts are so hard that high speed steel (HSS) bits won’t pierce them. On the other hand, cobalt bits might do it but will chip significantly. You must use a carbide tip drill bit.

Carbide is a metal alloy with carbon for superior chip and heat resistance—metal degradation as it heats up. They stay sharp for much longer, produce clean holes, and are less forgiving if you drill incorrectly.

Why not make the whole bit out of carbide? Because it’ll be too brittle and won’t dissipate heat as well. That’s why our bits are a combination of carbide and HSS.

But a carbide tip is just one of several features that make our drill bits the best option to tackle high-grade broken bolts.

First, the Mueller Kueps carbide tip drill bits have self-centering points to eliminate the need for a spot drill hole, helping you drill in the true position and reducing the cycle time—if you need to make several holes.

The controlled manufacturing process creates bits with detailed geometry.

The chisel is at the very center to produce accurate holes.

The wide angle of the point combined with the precise lip clearance angle reduces the feed force and makes the cutting lips carve out effortlessly high-grade steel.

The low helix angle of the bit body provides a perfect equilibrium between strength, chip removal, and heat dissipation.

Our bits have a short drill length suitable for shallow holes. The short length also increases their stability and reduces the chances of the bit bending or breaking, especially in tough drilling situations.

On top of all, our kit includes four drill bits catering to a variety of needs:

The Mueller Kueps Carbide Drill Kit isn’t just about making holes. It’s about precision and reliability in challenging situations.

HSS and cobalt drill bits are not a match for drilling extremely hard material. They’ll break and chip beyond repair, worsening an already complex situation and making you waste time and money.

Besides broken bolts, a similar and frequent issue that requires drilling is broken glow plugs. Our article “Take Out Broken Glow Plugs Professionally With the Best Removal Kit” guides you on quickly fixing this problem with the right tool.