Printed circuit boards are usually made of fiberglass (FR4), which is highly abrasive and given the many hundreds or thousands of holes on modern circuit boards, requires the use of specialist drill bits. PCB Supplies supplies the highest of quality Drill Bits manufactured by Union Tools. These Drill Bits are made of top quality Tungsten Carbide.
We hold stock
of standard drills in the ST and UC Series. The ST Series are a universal drill bit witch can be used for many materials. The UC Series bits are and undercut bit which is used for small through holes or via interconnectors, they allow improved inner hole wall quality, whilst maintaining good registration accuracy. This makes them ideal for high density multilayer boards.
We also stock Extended Flute Drills
of the STX series which have elongated flutes in comparison to the equivalent standard version in the same diameter.
Finally we stock Micro Drills
in the MV and MC Series these are ideal for through holes and blind via hole drilling. These drills are made of hyper fine grade carbide alloy to ensure they are robust.
We recommend that bits are fitted with depth setting rings
This will allow you to set the plunge depth stop on your drill press to a single value that will work for all bit diameters.
All of our bits can be purchased with or without rings. When ordering drills with depth rings, you may specify the depth ring position to suit your requirements.