If you are looking for the Best Step Drill Bit, then you have landed in the right place. Like any other drill bits, step drill bits are also used to make holes in solid material. With step drills, you are not just limited to drilling only metal but also plastics and wood. They are also used for multiple-hole drilling,counter-boring, and countersinking.
Features of Step Drill Bit
Step Drill Bit is also called “Unibit.” The main feature that separates the step drill bit from other tool bits is its design. Its conical shape and stair-step profile design make it the perfect cutting tool for drilling a wide range of hole sizes.
This forged metal tool has stepped on it with graduations marked in each step to achieve the desired diameter. Unibit is specified on the basis of its size, as it comes in various sizes, including the diameters and the number of steps. Some of the bit comes with a small point angle, so sometimes pre-drill a pilot hole is not needed, and the larger-size bit usually comes with a blunt tip, and the basic use of the larger-size bit is for hole enlarging.
Grooves are also present in Unibit. The groove or flutes is an integral element of any drill bit. The groove serves to provide clearance to the chips produced at the cutting edges. Chip removal is important; otherwise, too much heat will be generated, which can decrease the tool life. There are two types of grooves found in Unibit.
- Spiral Groove
- Straight groove
In a Spiral groove, a chip escapes more smoothly than a straight groove.
Application of Step Drill Bit
The step angle of Unibit drills is 90°, which facilitates smooth drilling function. Step drill bits are ideal for sheet metal, but they can also be used for drilling in plywood, laminate, particleboard, plastic boxes, acrylic, and electrical work.
Advantages of Step Drill Bit
- The conical stepped design keeps the bit from clogging.
- Step Drill provides burr-free holes.
- Both drilling and hole enlarging can be done.
- A wide range of hole sizes can be drilled.
Best Step Drill Bit
Here I have listed some of the Best Step Drill Bit available in the market.
General Purpose: IRWIN Step Drill Bit
They are the Best Step Drill Bit for DIY. Its unique design featured with radial concave flute gives clean and precise holes. The drill bits are made with High-Speed Steel, making it durable when drilling tough steel without decreasing the tool-life. It is designed with SpeedPoint tip for fast starts and has laser-marked sizes for simple identification, making it an excellent tool for starters. Its single-flute cutting edge can easily drill through fiberglass, sheet metal.
CO-Z Step Drill Bit (Multiple Hole)HSS
If you are looking for a durable and affordable step drill bit, then CO-Z multiple hole drill bit could be a great choice. Built from Cobalt steel along with titanium coating make it more durable and making it wear resistance for a more extended period. With this drill bit, making drill holes of various sizes can be done with ease without changing bits. They come with a Two-fluted design that provides faster and smoother cutting.
DEWALT Spiral Step Drill Bit(DWA1790IR)
When talking about tools or electrical machinery, you cannot leave out Dewalt. Dewalt Unibit two flute spiral design provides smoother cutting and better chip removal. With this tool bit, you can perform a versatile drilling operation on different materials. Its Laser engraved numbers make it easier for identification, hence increases step visibility. The Titanium coated makes it durable, providing longer tool life, and the two flute spiral design delivers better chip removal. It works best with rotary drills.It is the Best Step Drill Bit for any beginner.
Milwaukee Electrical Step Drill Bit
Looking for a step drill bit to drill FS electrical boxes or to do HVAC work? No need to worry; I have done all the hard work for you. After long research, I have selected Milwaukee SHOCKWAVE Step Bit. It is the Best Step Drill Bit for electrical works. Its Titanium Aluminum Nitride (TiAlN) coating gives an elegant look and protects against rust and tool wear, hence increases the tool life.
Bosch Turbo Step Drill Bit: Cordless Drills
When searching for the Best Step Drill Bit, you actually cannot leave out Bosch. Bosch is a popular name in the field of the tool industry. Its high-speed design delivers for burr-free holes. The Sharp cutting edges of this tool offer faster cutting through rigid materials like sheet metal, copper, brass, aluminum, hard plastic, plasterboard, PVC, stainless steel, and even cast iron, and the premium heat management enhances the tool-life.