Best 3.2 Mm Drill Bits for Metal, Wood, and DIY Projects
The best 3.2 mm drill bit depends on the material and how many replacements you want on hand. For drilling hard metals, consider the LingGan M35 cobalt bit or the COPOUIXR multi-size cobalt set. The uxcell 12-piece pack is a practical choice for repeated 3.2 mm drilling, while PATIKIL offers a two-bit M2 set with a TiN coating. For softer materials and general household projects, METALLIXITY is designed for wood, plastic, and low-hardness metals.
| Product | Best For | Key Difference |
|---|---|---|
| LingGan M35 Cobalt | Hard metals | Single 3.2 mm size, five bits |
| uxcell M2 HSS | Frequent metal drilling | 12 bits with dual coating |
| COPOUIXR Cobalt Set | Multiple hole sizes | 13 sizes from 1.5 to 6.5 mm |
| PATIKIL M2 HSS | Occasional metal work | Two bits with TiN coating |
| METALLIXITY 4241 HSS | Home DIY and soft materials | Uncoated 118-degree point |
LingGan M35 Cobalt Drill Bits
This five-piece pack is best for buyers who need several 3.2 mm bits for hard-metal work. Its M35 cobalt steel is described as containing 5% cobalt, with molybdenum added to the alloy. The listed applications include stainless steel and cast iron, making this a more specialized option than a general-purpose HSS bit.
The product also lists a titanium coating, hardened and honed cutting edges, and two flutes intended to move chips away from the hole. Choose this pack if you want multiple bits in one diameter and prioritize cobalt construction for heat-resistant metal drilling. Its limitation is that the pack supplies only one diameter, so it will not cover projects requiring varied hole sizes.
uxcell 12-Piece M2 HSS Bit Pack
The uxcell pack is best for users who want a larger supply of one common metric size. It includes 12 bits with a 3.2 mm cutting diameter and round shank, a 33 mm cutting-edge length, and a 62 mm overall length. The listed 135-degree split point and M2 high-speed steel construction suit metal-drilling tasks where a consistent bit size is useful.
Black nitride and gold titanium coatings are specified, along with spiral grooves designed to help carry metal chips out of the hole. The manufacturer lists use with hand drills, drill presses, bench drills, machining centers, and CNC lathes. Choose it for quantity and a coated M2 option. Avoid it if you specifically want cobalt-alloy bits or need multiple diameters in the same purchase.
COPOUIXR 13-Piece Cobalt Metric Set
This set is best for buyers who need a 3.2 mm bit as part of a broader range of sizes. It includes 13 metric cobalt bits spanning 1.5 to 6.5 mm, so it offers more flexibility than packs containing only 3.2 mm bits. Listed materials include stainless steel, carbon steel, cast iron, copper, aluminum, and some wood applications.
The product description identifies a 5% cobalt element and a 135-degree spiral cutting design. It also says the point is not self-centering and recommends using a center punch on smooth, curved surfaces to help position the hole. Glass and ceramics are specifically excluded. Choose this set for varied hole sizes; choose a dedicated 3.2 mm pack if you want more replacement bits of that exact diameter.
PATIKIL M2 HSS 3.2 Mm Bits
PATIKIL is best for occasional metal drilling when two replacement bits are enough. The pair has a 3.2 mm cutting diameter, a 63 mm overall length, and a 36.5 mm flute length. Its M2 high-speed steel body and 135-degree split point are specified for applications including low- and medium-carbon steel, alloy steel, stainless steel, cast iron, and aluminum alloys.
A titanium nitride coating is listed to help resist oxidation or corrosion. The product guidance recommends coolant when drilling harder materials such as high-carbon steel, stainless steel, and alloy steel. Choose this option for a small coated set. Its main limitation is quantity: two bits provide fewer replacements than the larger packs in this guide.
METALLIXITY 4241 HSS Bits
METALLIXITY is best for home DIY tasks involving wood, plastic, or softer metals rather than demanding hard-metal work. This two-piece pack uses 4241 high-speed steel and has an uncoated bright finish, a 118-degree point, and a 3.2 mm cutting diameter. Listed dimensions include a 40 mm flute length and 64 mm overall length.
The product is intended for maintenance, repair, and low-intensity applications involving materials such as aluminum alloy and copper. Its broad material range makes it a practical alternative when one project includes nonmetal materials. The limitation is that the listing focuses on medium- to low-hardness materials, so buyers drilling hard steel should compare it with the cobalt or coated M2 options instead.
Buying Guide: How To Choose A 3.2 Mm Drill Bit
Which bit is best for hard metal?
Compare the material and construction rather than diameter alone. The LingGan and COPOUIXR products list cobalt steel, while PATIKIL and uxcell list M2 high-speed steel. For hard or heat-intensive metal work, cobalt is the more specialized choice among these options. PATIKIL specifically recommends coolant for harder materials.
Do you need one size or a range?
If the project repeatedly calls for a 3.2 mm hole, a single-size pack gives you multiple replacements in that diameter. The COPOUIXR set is better when you need several metric sizes, with a stated range of 1.5 to 6.5 mm. Check the set’s size range against your actual hole requirements before choosing.
What do point angle and coating mean for selection?
The listings include 118-degree and 135-degree point designs. PATIKIL and uxcell specify 135-degree split points; METALLIXITY specifies a standard 118-degree point. Coatings also differ: PATIKIL lists TiN, uxcell lists black nitride and gold titanium, and METALLIXITY is uncoated. These details help distinguish products, but do not replace choosing a bit suited to the material.
What else should you check?
Confirm that the bit’s diameter, shank, and length suit your equipment and workpiece. For example, uxcell lists a 3.2 mm round shank and 62 mm overall length. Follow the product’s usage guidance, select a suitable drilling speed for the material, and use a center punch where positioning on a smooth surface is a concern.
Frequently Asked Questions
What is a 3.2 mm drill bit in inches?
One product in this selection lists 3.2 mm as approximately 0.126 inches. Check the required measurement for your project before drilling.
Can a 3.2 mm bit drill stainless steel?
Several listed products specify stainless steel, including the LingGan cobalt, uxcell M2, COPOUIXR cobalt, and PATIKIL M2 options. Follow the product guidance for the selected bit and material.
Is cobalt better than M2 high-speed steel?
Cobalt bits are positioned in these listings for heat-resistant and harder-metal applications. M2 bits offer a different high-speed steel option, with some products listing coatings and metal applications. Match the bit to the material and task.
Can these bits drill glass or ceramic?
The COPOUIXR listing specifically says its set does not apply to glass and ceramics. Do not assume a metal twist drill bit is suitable for those materials.
Why use more than one 3.2 mm bit?
Extra bits provide replacements when a project involves repeated holes or when a bit becomes worn. A larger pack is useful for repeated work in one diameter; a multi-size set is better when hole sizes vary.