Best 13/16 Drill Bit for Steel: Top High-Speed Steel Options for Metal Work
When drilling through steel or other hard metals, a reliable 13/16 inch drill bit can save time and improve accuracy. This guide reviews high-speed steel (HSS) and cobalt options designed for metal, cast iron, stainless steel, and alloys. Each pick features a 1/2″ shank or reduced shank for compatibility with common drill chucks, along with enhanced tip designs to prevent walking and improve chip clearance.
| Product | Key Features | Shank | |
|---|---|---|---|
| NEIKO 10235B | NEIKO | 135° split point; HSS; self-centering; 1/2″ shank; durable | Tri-flat 1/2″ |
| CORTOOL 13/16 | Cortool | Reduced shank; HSS M2; black & gold; 1/2″ shank | 1/2″ |
| Meccion Cobalt 13/16 | Meccion | 5% cobalt HSS; 135° pilot point; high hardness; long life | Reduced shank |
| Drill America 13/16″ (KFD3F) | Drill America | Contractor grade; 135° split point; broad metal range | 1/2″ |
| Narwhal 13/16″ | Narwhal | 5% cobalt; 135° split point; includes storage case | 1/2″ |
NEIKO 10235B 13/16” Drill Bit for Metal
The NEIKO 10235B line uses high-speed steel to deliver sharp, fast drilling in metals, wood, plastics, and composites. Its 135° split point promotes self-centering and reduces walking, allowing faster hole creation without a pilot hole. The 1/2″ tri-flat shank minimizes chuck slippage and improves hole precision during repeated use. This bit is designed for durability and wear resistance in tough materials.
CORTOOL 13/16 Inch Drill Bit
This Cortool bit uses reduced shank High Speed Steel (HSS M2) with a 13/16″ diameter and a 1/2″ shank. The reduced shank design can help when a larger diameter tool is needed in a drill with a smaller chuck, while the HSS core provides good wear resistance for metal drilling tasks.
Meccion Cobalt Drill Bit 13/16 Inch
Meccion offers a cobalt-enhanced HSS 13/16″ drill bit with a 135° pilot point design to improve centering and reduce walking. The 5% cobalt content increases hardness and heat resistance, extending bit life when drilling through stainless steel, cast iron, and other hard metals. The straight round shank supports stable clamping in compatible holders for precise holes.
Drill America 13/16″ Reduced Shank
Drill America’s 13/16″ reduced shank drill bit sits in the contractor-grade category, built from M1 high-speed steel for broad material compatibility. The black oxide treatment adds lubricity and helps retain coolant near the cutting edge. The 135° split point reduces walking, enabling self-centering holes across a range of iron and steel alloys.
Narwhal 13/16″ Cobalt Drill Bits
Narwhal’s cobalt drill bit provides a 13/16″ diameter with 5% cobalt content, delivering enhanced hardness and heat resistance. The 135° split point promotes precise starts in harder materials and reduces wandering. A plastic storage case helps keep the bits organized for quick access in busy workshops.
VALYRIANTOOL 3PCS 13/16 Inch Cobalt Bits
These VALYRIANTOOL cobalt bits feature M35 cobalt in a 13/16″ diameter with a 1/2″ shank and a 135-degree split point. The black and gold coating improves lubricity and reduces heat buildup, helping to maintain edge sharpness during extended drilling sessions. The 3-flat shank design supports stable hold in various toolholding systems.
Meccion Titanium Aluminum Nitride Coated 13/16″
Mection’s titanium aluminum nitride (TiAlN) coated cobalt bit combines M35 cobalt HSS with a protective coating to enhance oxidation resistance and reduce wear at high temperatures. Its 135° pilot point and straight 3-flat shank support precise drilling of metal, stainless steel, and cast iron across extended sessions.
Buying Guide
Key considerations when choosing a 13/16 inch drill bit for steel:
- Material composition: Cobalt alloys (M35) offer greater hardness and heat tolerance than standard HSS, ideal for stainless steel and cast iron.
- Tip geometry: A 135° split point improves self-centering and reduces walking, especially on hard metals.
- Shank type: A 1/2″ shank fits common drill chucks; reduced shank options enable larger diameters in smaller chucks but should maintain rigidity for precision work.
- Coatings: TiAlN or black oxide coatings can reduce wear and improve lubricity, extending tool life under heat stress.
- Length and reach: Longer bits provide reach in deep holes; consider extra-long variants for fabrication tasks requiring access through thick materials.
Usage context and price can influence selection. For high-volume metal fabrication, cobalt and TiAlN-coated bits offer longer life at a higher upfront cost. For general purpose metal drilling with tighter budgets, HSS bits with a reliable 135° point remain a solid choice. Always follow drill speed and lubrication guidelines to maximize bit life and hole quality.