The Complete Guide to Drill Bit Size for #10 Screw: Everything You Need to Know



Are you planning to work on a project involving #10 screws but are not sure about drill bit size? It’s impossible to have a secure and stable connection when choosing the wrong drill bit size for your screws. In this guide, we will cover everything you need to know about drill bit size for #10 screws.

The Basics of #10 Screw

Before we dive into drill bit sizes, let’s understand what a #10 screw is. #10 screws are medium-sized screws commonly used in construction, woodworking, and any DIY projects. They have a diameter of 0.190 inches or 4.8mm.

The photo of #10 screw

Understanding Drill Bit Size By Its Purposes

Clearance Hole

It is a hole through an object, which is large enough to enable threads of a screw or bolt to pass through.

Pilot Hole

When driving a screw into wood, it is often necessary to firstly drill a hole for preventing wood from splitting, increasing penetration and reducing the risk of the screw deviating or passing through the wood. It is known as a “pilot hole”.

Countersink Hole

A countersink hole is a tapered opening created in a material to hide the head of a screw, allowing it to sit flush with the surface.

The photo below visually illustates the difference about three holes.

The illustration of clearance hole, pilot hole and countersink hole for better unserstanding drill bit sizes.

There are corresponding drill bit sizes for #10 screw in terms of the purposes above.

The common drill bit size for #10 screw is 3/16 inch when making clearance hole.

Drill SizeDiameter (in)Diameter (mm)
3/16 in0.194.76

The recommended drill bit size for #10 screw is 1/8 inch for hard wood and 3/32 for soft wood when making pilot hole.

Drill SizeDiameter (in)Diameter (mm)
1/8 in0.133.18
Drill SizeDiameter (in)Diameter (mm)
3/32 in0.0942.38

As we know, pilot holes are often made in wood, including soft wood and hard wood.

  1. Hard Wood:Hard woods, such as oak or maple, exhibit a higher density and possess formidable resistance when subjected to drilling, unlike their soft wood counterparts. To accommodate the girth of a #10 screw and ensure a seamless insertion, it becomes imperative to employ a more generous pilot hole. Using a 1/8 inch drill bit allows for a slightly larger hole that enables the screw to penetrate the hard wood without splitting or causing excessive resistance.
  2. Soft Wood: Conversely, the realm of soft woods, like pine or cedar, unveils a different tale altogether. With a lower density and a more docile disposition towards drilling, soft woods demand a different approach. The diminutive stature of the #10 screw permits a reduced pilot hole, tailored to its specifications. Hence, employing a 3/32 inch drill bit carves out a snug dwelling for the screw within the soft wood, ensuring a secure grip while still accommodating the need for clearance during its effortless insertion.

Since you already know the difference of drill bit sizes for #10 screw when drilling pilot holes, it is time to dig your material demands for better woodworking jobs. High Speed Steel Hex Shank Twist Drill Bits Set with Titanium Coating would be a trusable option for drilling pilot holes in both hard wood and soft wood. The hex shape ensures a secure grip, preventing slippage or spinning in the drill chuck. These drill bits, composed of High Speed Steel (HSS), exhibit remarkable endurance in drilling both hard and soft woods, warding off blunting and deterioration. Additionally, their resilience is enhanced by a titanium coating that bestows exceptional heat resistance without compromising hardness or brittleness.

Whether you are working on furniture, cabinetry, or general woodworking projects, toolant HSS drill bits can handle the task.The most impotmatly, it comes with full size range including 1/8 inch and 3/32 inch.

Differentrly, the recommended drill bit size for #10 screw is 1/2 inch when making countersink holes.

Drill SizeDiameter (in)Diameter (mm)
1/2 in0.5012.70

If you would like to know more about tool accessories and size details, please visit:


Choosing the right drill bit size for #10 screws is crucial to ensure a secure and stable connection. The recommended drill bit size for clearance hole is 3/16 inches or 4.76mm, and for countersink hole is 1/2 inches or 12.7mm. It is slightly different on pilot holes as there are two sizes,1/8 inches (3.18mm) for hard wood,3/32 inches (2.38mm) for soft wood. You can use various types of drill bits to achieve different results. It’s important to choose the right drill bit size and type based on the material you’re working with and the type of connection you want to create.

I take immense pride in being an accomplished woodworker, a dedicated researcher, and an expert in the realm of home improvement tools and tool accessories. With years of hands-on experience, my passion for craftsmanship and innovation runs deep within me. I have honed my skills through countless hours of practice, mastering the intricacies of woodworking techniques. Through my unwavering commitment to excellence, I have become a trusted authority in the field. Clients and colleagues alike rely on my expertise, knowing that I am a reliable source of knowledge and guidance. The satisfaction of seeing my clients' visions come to life fuels my drive to continually push the boundaries of creativity and precision. My work serves as a testament to my unwavering dedication, attention to detail, and relentless pursuit of perfection. Whether it's selecting the perfect tool for a specific task or delving into the nuances of power tool accessories, I immerse myself in every aspect of my craft. Being both an experienced handyman& contactor, and a meticulous researcher allows me to bring a unique perspective to my work. I am constantly exploring new techniques, staying up-to-date with the latest advancements, and seeking out innovative tools and accessories that can elevate the art of woodworking to new heights. With unwavering enthusiasm, I am eager to share my knowledge and expertise with others who share the same passion. Together, we can embark on a journey of creativity, craftsmanship, and self-expression, pushing the boundaries of what is possible in the world of tools.

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