Tungsten steel fixed shank carbide small drill bits for PCB circuit board drilling

These fixed shank carbide drill bits are a practical choice for anyone who needs to drill precise holes in printed circuit boards. The tungsten steel construction gives them the hardness required to cut through fibre-reinforced epoxy without chipping or wandering. With blade diameters as small as 0.1mm, these bits suit fine-pitch electronics work, while the 3.2mm round shank fits common drill collets. Each bit has a useful cutting length of 1.5-10.5mm and a total length of 36-38mm, making them compact enough for tight spaces. Supplied in packs of 10 pieces, they offer good value for regular PCB prototyping or repair tasks.

Features and Construction

These drill bits are built from tungsten steel, a material known for its hardness and ability to hold a sharp edge. The straight shank twist design provides reliable chip evacuation during drilling. Multiple size options let you match the bit to your hole requirements.

Material and Build

The bits are made entirely from tungsten steel, which is harder than high-speed steel and better suited to abrasive PCB materials. The twist flute helps clear debris, and the 3.2mm round shank ensures compatibility with most small drill chucks. The outer edge angle and chip flute length are as shown in the figure, varying by style.

Size and Practical Fit

Blade diameters range from 0.1mm to 1mm, depending on the style selected. The useful cutting length is 1.5-10.5mm, and the total length is 36-38mm. The shank is a fixed 3.2mm diameter, so you can use these bits in any tool that accepts that collet size. Weight is just 0.05kg per pack.

Uses and Placement

These bits are intended for drilling small, accurate holes in circuit boards and similar hard materials. Their small diameters make them ideal for through-hole components, vias, and prototyping. They are equally useful in professional PCB fabrication and hobbyist electronics work.

Event or Professional Use

In a workshop or lab, these bits allow technicians to drill clean holes for mounting components or connecting layers. The tungsten steel reduces the need for frequent bit changes, improving workflow during batch jobs.

Everyday Home Use

Hobbyists repairing electronics or building custom circuits will find these bits handy for making precise holes in single- and double-sided boards. The small diameters suit fine-pitch components like ICs and connectors.

Benefits and Buying Value

These drill bits offer a cost-effective way to keep a range of sizes on hand. The tungsten steel construction extends their useful life compared to cheaper alternatives. Choosing the correct style ensures you get the exact blade diameter you need for each job.

Reuse and Low Maintenance

With proper use, tungsten steel bits stay sharp for many holes. They do not require special lubrication or complex maintenance. Simply clean off debris after use and store them in a dry place.

Why Choose This Product

These bits provide a straightforward solution for PCB drilling with sizes down to 0.1mm. The fixed 3.2mm shank simplifies setup, and the pack of 10 gives you spares for repeated work. They are a practical addition to any electronics toolkit.