Brass projects demand drill bits that resist galling, walk less, and stay sharp through stainless or softer metals. This guide highlights five top-rated drill bit sets and related accessories designed to drill brass cleanly and efficiently. Whether you’re widening holes or starting new threads, these bits combine cobalt or titanium coatings with smart point geometry to reduce wandering and heat.
| Product | Brand | Key Feature |
|---|---|---|
| DEWALT DWA1184 Drill Bit Set | DEWALT | 135° split point; high-speed steel; durable tapered web |
| CORTOOL 3/8″ Cobalt Drill Bits Set (6Pcs) | Cortool | 5% cobalt; 135° split point; fully ground |
| Makita B-65399 Impact Gold 14 Pc | Makita | TiN coating; 135° split point; designed for impact drivers |
| Pro Edge Technology Cobalt Drill Bit Set (13 pcs) | Pro Edge Technology | M35 cobalt; 135° split point; broad size range |
| CORTOOL 1/2″ Cobalt Drill Bits Set (6Pcs) | Cortool | 5% cobalt; 135° split point; robust for hard metals |
DEWALT Drill Bit Set, 3-Flats Shank, 14-Piece
The DEWALT DWA1184 set features a 135-degree split point designed to reduce walking as it penetrates brass and other metals. Crafted from high-speed steel, these bits are versatile for drilling into plastic, wood, and metal. The tapered web construction adds durability to resist breakage during tough tasks, helping maintain a clean hole edge when working with brass alloys. This set is suitable for general purpose metalwork where consistent bit life matters.
WENORA Wire Brush Set for Drill
While primarily a rust-removal accessory, the WENORA 5-piece wire brush set includes robust wire wheels and cups with 1/4″ hex shanks. These brushes help prepare brass surfaces by removing oxidation and burrs before drilling, improving hole quality and reducing the risk of chip welding. The upgraded carbon steel wires resist fatigue and the sturdy shanks ensure reliable use with power tools. This accessory is useful for prep work around brass assembly or finishing tasks.
CORTOOL 3/8 Inch Cobalt Drill Bits (6Pcs)
This 6-piece cobalt set from Cortool uses M35 high-speed steel with 5% cobalt for enhanced wear resistance, essential when drilling brass and other hard metals. The bits have a fully ground 135-degree split point and straight shanks to prevent walking during initial contact and maintain precision. They fit most power drills and are well-suited for larger diameter brass holes when durability matters.
DEWALT Titanium Nitride Coated Drill Bit Set (DW1361)
The DEWALT DW1361 set features a titanium nitride coating along with a pilot point for cleaner holes and reduced friction. The coating extends bit life in brass and a variety of metals, and the no-spin shanks minimize wobble. This set is suitable for users requiring longer bit life and consistent hole quality in brass projects.
Makita B-65399 Impact Gold 14 Pc
Makita’s Impact Gold set combines TiN coating with a 135-degree split point, delivering faster starts and less walking—ideal for brass and other tough materials. The bits are designed for use with 1/4-inch hex impact drivers, ensuring compatibility with modern quick-release systems. The coating helps reduce wear and extend life in repeated drilling tasks.
Pro Edge Technology Cobalt Drill Bit Set (13 pcs)
The Pro Edge Technology cobalt bits use M35 cobalt steel with a 135° split point and a twist design to improve debris removal. Aimed at hard materials like brass and stainless steel, this 13-piece set offers a broad range of sizes with durable construction and efficient drilling performance. The bits are designed for longer life under heavy use and provide precise starting points to avoid wandering on brass surfaces.
CORTOOL 1/2 Inch Cobalt Drill Bits Set (6Pcs)
This 1/2-inch cobalt set from Cortool delivers high wear resistance with 5% cobalt and a fully ground design. The 135-degree split point helps brass drilling with minimal wandering, while straight shanks ensure compatibility with a wide range of drills. The larger diameter options support through-holes and heavy-duty brass work efficiently.
Buying Guide: Key Purchase Considerations
- Material and coating: Cobalt (M35) bits outperform standard HSS in brass wear resistance and heat tolerance. Titanium nitride coatings extend bit life and reduce friction on brass alloys and other metals.
- Point geometry: A 135-degree split point minimizes walking and enables a clean entry, important for brass to prevent early wandering.
- Shank design: Straight or hex shanks improve bit stability in handheld drills and impact drivers; hex shanks prevent slipping in quick-change chucks.
- Bit length and diameter: A range of sizes supports multiple brass hole diameters. Longer bits clear deeper holes, while smaller diameters reduce required force.
- Quality and compatibility: Match bit material and coating to your drill type (drill press, handheld, impact driver) and ensure the shank fits your chuck or collet.
- Durability vs. cost: Cobalt and TiN-coated bits cost more upfront but typically outlast standard HSS bits in brass work, yielding lower long-term cost per hole.
- Maintenance: Keep bits sharp, remove burrs from brass surfaces, and use steady feed pressure to minimize heat buildup that can dull tools.
Brass-focused drilling benefits from sets that combine cobalt content with precise point geometry and robust shanks. The five selections highlighted here balance cost, durability, and performance across common brass machining tasks, from hobby projects to professional fabrication.