Tapered vs Threaded Button Bits – Which Rock Drill Bit Is Best?

When it comes to rock drilling, choosing the right bit can make a huge difference in efficiency, cost, and drilling quality. Two of the most common types of drill bits used in mining and construction are tapered button bits and threaded button bits. But how do you know which one is right for your job?

In this guide, we’ll break down the key differences, benefits, and ideal use cases of tapered vs threaded button bits to help you make the best decision.

What Are Tapered Button Bits?

Tapered button bits are typically used for small-hole drilling with hand-held rock drills or light jackhammers. These bits feature a tapered socket that fits into a matching Tapered drill rod, commonly in 7°, 11°, or 12° angles.

Key features:

• Simple connection (no thread)

• Ideal for short-hole drilling (usually <3m)

• Quick to replace and maintain

• Best for manual or pneumatic drilling in mining, quarrying, and municipal work

Common Taper button bit diameters: 28mm – 45mm
Applications: Stone quarrying, underground mining, foundation drilling

What Are Threaded Button Bits?

Threaded button bits are designed for longer and deeper holes, often exceeding 3 meters. These bits have a threaded connection to Extension rods and couplings, offering better stability and energy transmission over distance.

Key features:

• Strong threaded connection (R25, R28, R32, T38, T45, T51, etc.)

• Suited for heavy-duty drilling rigs

• Better performance in medium to deep holes

• Used with top hammer drilling systems

Typical diameters: 32mm – 102mm
Applications: Bench drilling, surface mining, tunneling, infrastructure projects

Comparison Table

Which One Should You Choose?

•  Choose Tapered Button Bits if:
  You are drilling short, shallow holes using manual or pneumatic rock drills in quarries, mines, or demolition works. You need quick changeovers and lower cost per bit.

•  Choose Threaded Button Bits if:
  You need deep-hole drilling, are using hydraulic or top hammer rigs, and require a more durable, stable connection for high-impact operations.

SUPERDRILL – Your Reliable Button Bit Manufacturer

At SUPERDRILL, we supply both tapered and threaded button bits, made with high-grade carbide and precision heat treatment. Whether you're working in hard granite or soft limestone, we provide the right bit for your drilling demands.