Best 1.25 Drill Bit for Metal: Top Choices for Precision Metal Drilling
Whether you’re working on stainless steel, aluminum, or hard alloys, choosing the right drill bit is essential for clean holes and longer tool life. This guide highlights five highly capable 1.25 drill bit options and related metal-cutting bits that perform well on metal surfaces. Each selection features reputable construction, suitable shanks for common drill chucks, and tips designed to minimize walking and improve drilling accuracy. Use this overview to compare hardness, tip geometry, and shank compatibility before making a purchase for metalworking tasks.
| Product | Brand | Shank / Size | Tip Type |
|---|---|---|---|
| Drill America 1-1/4″ Reduced Shank High Speed Steel | Drill America | 1/2″ shank; 1-1/4″ overall | 135° split point |
| Drill America KFDRSD1-1/4 1-1/4″ Reduced Shank HSS | Drill America | 1/2″ shank; 1-1/4″ overall | Gold/Black coating; general purpose |
| PATIKIL 1.25mm Drill Bit (1.25mm) | PATIKIL | Standard round shank | 135° split point; uncoated |
| Greycore Tools 1-1/4 Inch Reduced Shank | Greycore | 1/2″ shank; 1-1/4″ overall | Industrial titanium coating |
| ASNOMY Tungsten Carbide Tipped Hole Saw 1-1/4″ | ASNOMY | 2/5″ (10mm) shank | TC Tipped; 3-blade design |
Drill America 1-1/4″ Reduced Shank High Speed Steel
The Drill America KFD3F series offers a contractor-grade high-speed steel (M1 HSS) drill bit designed for metal. Its reduced shank works with standard 1/2″ toolholding systems, enabling compatibility with many drill drivers and bit holders. The 135-degree split point helps with self-centering and reduces walking, making it suitable for drilling aluminum, iron, steel, and other metal families. This bit is optimized for a broad range of metal drilling tasks, delivering hardness and toughness needed for repeated use in metalworking projects. Consider this option when you need dependable performance in metal fabrication and repair.
Drill America KFDRSD1-1/4 1-1/4″ Reduced Shank HSS
This Drill America KFDRSD1-1/4 bit features a 1/2″ shank and a 1-1/4″ cutting diameter, ideal for general-purpose metal drilling. The high-speed steel construction offers a balance of hardness and toughness for wear resistance. Its coating combines gold and black tones, enhancing performance in stainless steel and other hard metals. The round shank provides compatibility with a wide range of toolholding systems, making it a flexible option for various drill presses and handheld drills used in metalworking environments.
PATIKIL 1.25mm Drill Bit
The PATIKIL kit provides 10 pieces of 1.25mm diameter drill bits made from M2 high-speed steel. The bits feature a 135° split point for self-centering on metal surfaces and an uncoated bright finish to reduce friction. They are described as suitable for low to medium carbon steel, alloy steel, stainless steel, cast iron, and aluminum. While designed for smaller workpieces and light manufacturing tasks, these bits offer precise drilling with good wear resistance when used with appropriate cutting fluids and proper feed rates.
Greycore Tools 1-1/4 Inch Reduced Shank
The Greycore 1-1/4 inch reduced shank drill bit is designed for a broad range of metals, including iron and steel. It features a 1/2″ 3-flat reduced shank to resist slipping in the chuck, which helps maintain stability during drilling. The industrial titanium coating enhances hardness and wear resistance, supporting longer tool life in tougher metal drilling tasks. This option is well-suited for DIY, woodworking, metalworking, and automotive projects requiring reliable metal penetration and reduced bit wandering.
DECKRKAT 2-Pack 1-1/4″ TCT Hole Saws
The DECKRKAT hole saw set uses tungsten carbide tipped (TCT) teeth for cutting hard metals, including stainless steel and high alloy steels. The 1-1/4″ diameter and 1″ cutting length deliver clean, precise holes with less work required. The set includes spring-loaded pilot bits to assist debris removal and a hex wrench for secure tightening. With a 3-flatted 3/8″ shank, these hole cutters accommodate a variety of drill rigs and CNC machines, enabling stability in heavy-duty cutting scenarios. They are intended for metal, plastic, and composite materials where robust cutting performance is required.
ASNOMY Tungsten Carbide Tipped Hole Saw 1-1/4″
The ASNOMY 1-1/4″ hole saw is carbide-tipped for enhanced hardness and rust resistance, making it suitable for hard metals like stainless steel and other hard alloys. The kit includes two titanium-plated pilot bits to reduce friction and extend tool life. Its three-blade design increases cutting speed and efficiency, producing smoother holes in metal, wood, plastic, and other materials. This option is beneficial when a high level of precision and durability is required in metal fabrication projects.
Buying Guide
- Material compatibility: For steel, stainless steel, and hard alloys, carbide-tipped or high-speed steel options with proper coatings can reduce wear and improve edge retention.
- Shank compatibility: Ensure the bit shank matches your drill chuck or toolholding system. Common sizes include 1/2″ shanks for many metalworking drills and 3-flat designs for secure grip.
- Tip geometry: 135° split points help with self-centering and reduce walking on metal surfaces, especially on harder metals.
- Coatings: Gold/black coatings and titanium enhancements can increase hardness and reduce friction, extending tool life in tough metals.
- Application scope: For cutting through stainless steel, cast iron, aluminum, and alloys, consider a mix of HSS for general use and carbide-tipped hole saws for heavy-duty metal cutting.
- Coolant usage: When drilling harder materials, apply coolant to minimize heat buildup and wear, particularly with high-speed steel bits and carbide tools.
- Tool life vs. cost: Carbide-tipped and coated bits may have higher upfront costs but offer longer life in demanding metalworking tasks, balancing total project cost over time.
- Maintenance: Keep bits sharp and clean; remove burrs after drilling to maintain hole quality and reduce wear on future bits.