This guide highlights top American-made drill bits known for durability, precision, and performance across wood, metal, and plastic. Each selection features reliable materials like high-speed steel, cobalt, and titanium nitride coatings, with point designs crafted to reduce walking and improve clean starts. Read on to compare notable brands, coatings, and shank styles to help choose the right set for your toolkit.
| Product | Brand | Notable Feature |
|---|---|---|
| DEWALT Drill Bit Set, 3-Flats Shank, 14-Piece | DEWALT | 135° split point; versatile for plastic, wood, metal |
| DEWALT Titanium Nitride Coated Drill Bit Set | DEWALT | Titanium nitride coating; cleaner holes; starts on contact |
| Drill America 15 Piece Cobalt Set | Drill America | Heat-resistant cobalt; high red hardness; 135° split point |
| Drill America 29 Piece KFD Series Set | Drill America | High-speed steel; corrosion-resistant black/gold finish |
| BOSCH CO14B 14-Piece Cobalt M42 Set | Bosch | 8% cobalt alloy; extended life; high heat resistance |
DEWALT Drill Bit Set, 3-Flats Shank, 14-Piece
The DEWALT DWA1184 set uses a 135 Degree Split Point designed to reduce walking and produce clean starts in plastic, wood, and metal. Built with High Speed Steel, these bits offer solid performance for general-purpose drilling and light fabrication tasks. The 3-flat shank provides a secure grip in standard drivers, supporting stable operation under repetitive drilling.
DEWALT Titanium Nitride Coated Drill Bit Set (DW1361)
This 21-piece set features a Titanium Nitride coating that extends bit life and reduces wear, with pilot point tips for starting holes cleanly. The no-spin shanks help resist slippage in impact-ready applications, and the set is designed to start cutting quickly with less walking on metals and harder plastics.
Drill America 15 Piece Cobalt Drill Bit Set
These cobalt bits are engineered for high tensile materials, featuring M35 5% cobalt composition that permits higher speeds and improved red hardness. The 135-degree cutting angle and self-centering design support accurate, burr-free holes in stainless steel, Inconel, titanium, and other tough metals, while still performing in wood and plastics.
Drill America – KFD29J-PC 29 Piece Set
The KFD29J-PC lineup includes 29 jobber-length bits from 1/16″ to 1/2″ in 1/64″ increments. Made from high-speed steel, these bits provide wear resistance and reliable performance for general purpose drilling, with a durable black and gold finish that resists corrosion and enhances life in demanding jobs.
BOSCH CO14B 14-Piece Cobalt Set
The BOSCH CO14B set leverages cobalt M42 alloy to deliver extended bit life and higher heat resistance for drilling stainless steel, cast iron, titanium, and light-gauge metal. The 8% cobalt blend offers noticeably longer life than standard bits, making it suitable for tougher metal applications and repeated use in demanding projects.
Buying Guide
Key considerations when selecting drill bits made in the USA include material and coating, application compatibility, and shank and point design. Coatings like titanium nitride and cobalt alloys improve wear resistance and heat tolerance, enabling faster drilling with less heat buildup. Consider the work material: wood, plastics, mild metals, stainless steel, or hard alloys like Inconel or titanium, and choose bits with appropriate hardness and edge geometry for those materials.
Shank style affects compatibility with your drill. A three-flat or other secure shank reduces slippage in quick-change chucks and impact drivers. Point geometry matters for accuracy: 135-degree split points help self-center and prevent walking on metals and hard plastics, while pilot points aid starting on smooth surfaces. For high-volume or professional use, cobalt or M42 cobalt alloys extend life in tough materials, though they come at a higher cost.
Maintenance and storage also impact performance. Keep bits clean from debris, use lubrication for metal drilling to reduce friction, and store in a sturdy index or case to prevent dulling. When evaluating sets, balance the number of sizes with your typical projects; broader assortments save time, while focused sets may offer higher-quality bits for specific tasks.