5-Pack 23/64 Inch M35 Cobalt Twist Drill Bits for Hard Metals
- PREMIUM M35 COBALT STEEL: Crafted from heavy-duty 5% cobalt steel, these drill bits deliver superior strength, exceptional heat resistance, and long-lasting durability. They are perfectly engineered for demanding metalworking projects involving tough materials like stainless steel, cast iron, and hardened metals.
- 135° SPLIT POINT & NO WALKING: Featuring a precision 135-degree split point tip, these bits ensure accurate, instant starts without the need for a pilot hole. This advanced design significantly reduces "walking" on the material surface, enabling smooth and effortless drilling.
- EFFICIENT DUAL TWIST FLUTE: The optimized dual twist flute design provides rapid chip and debris clearance. This prevents clogging, reduces friction, and maintains a cool, clean cut for highly consistent performance during heavy-duty applications.
- PRECISE DIMENSIONS & BRONZE FINISH: Each drill bit is precision-machined to exacting standards, featuring a 23/64" diameter, a 3.50" working length, and a 4.88" total length. The bits are coated with a sleek bronze finish that enhances corrosion resistance while providing a professional look.
- CONVENIENT & TOUGH STORAGE CASE: Your 5-piece set arrives securely packaged in a tough, transparent polypropylene (PP) case. This compact container keeps your drill bits organized, protected from damage, and easily portable for any job site or workshop project.
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Built for extreme heat and durability. This 5-piece 23/64" M35 cobalt steel pack is your ultimate solution for heavy-duty drilling. Engineered to cut through stainless steel, cast iron, and hard alloys effortlessly without dulling. Stock up on your most essential size.
The precision 135-degree split point provides immediate self-centering. It prevents walking or skating on hard metals like stainless steel. This design requires less thrust and cuts faster, delivering clean and highly accurate holes every time.
Built with a standard straight round shank, these cobalt bits offer universal compatibility. They fit securely into all standard drill chucks. Whether using a portable power drill or a drill press, expect a firm, slip-free grip for safe drilling.
Forged with 5% cobalt for extreme heat resistance and superior hardness. Easily powers through stainless steel and tough alloys
The fully polished double-flute spiral design clears debris quickly, reducing friction and heat buildup for faster, smoother drilling.
Fully ground from solid metal for razor-sharp edges and high dimensional accuracy, ensuring perfectly round, clean, and burr-free holes.
Features a specialized bronze oxide finish that prevents corrosion and retains lubricants, significantly extending the lifespan of each bit.
Standard HSS bits burn up on hard metals. Hymnorq M35 Cobalt is enhanced with 5% Cobalt for superior heat resistance. It easily penetrates stainless steel and cast iron where ordinary bits fail, staying sharp longer and saving you money on replacements.
Stays Sharp After Hundreds of Holes
Ultimate Durability Test: Continuous Drilling on Hard Metals
Watch as our M35 Cobalt bit tackles plate after plate of stainless steel and cast iron. Unlike standard bits that overheat and dull after just a few holes, the 5% Cobalt alloy maintains its hardness even at extreme drilling temperatures.
This video proves that whether it's the first hole or the hundredth, you get consistent precision, smooth chip removal, and industrial-grade performance. Stop wasting money on cheap bits; choose Hymnorq for heavy-duty endurance.
Can these drill bits cut through hardened steel or stainless steel?
Yes. M35 grade steel with 5% Cobalt is specifically engineered for high-tensile metals like stainless steel, cast iron, and titanium alloys. For fully hardened steel (HRC > 50), carbide bits are recommended.
Will these bits fit my standard cordless drill?
Yes, absolutely! These drill bits feature a universal straight round shank. They are fully compatible and will lock securely into the standard chucks of almost all portable cordless drills, corded power hand drills, and drill presses.
Do I need to use cutting oil or lubricant?
Highly recommended. While Cobalt is heat-resistant, using cutting fluid significantly reduces friction and heat buildup. This prevents the bit from annealing (softening) and greatly extends its lifespan.
Do these bits require a center punch to start?
No center punch needed. They feature a 135° split point that provides immediate self-centering. This prevents walking or slipping on hard metals like stainless steel, allowing you to start your hole precisely and directly every time.
Are these bits just coated with Cobalt or solid?
They are solid M35 Cobalt steel throughout, not just coated. Unlike titanium-coated bits that lose effectiveness once sharpened, these maintain their heat resistance and performance even after resharpening.
Product details
Specifications
| Main Specification | |
|---|---|
| Surface Recommendation | Iron, Stainless Steel, Copper, Brass, Cast Iron, aluminum alloy, Angle Steel |
| Manufacturer | Hymnorq |
| Unit Count | 1 Count |
| Cutting Diameter | 0.36 inches |
| Point Style | Split Point |
| Shank Type | Straight |
| Tool Flute Type | Spiral |
| Brand | HYMNORQ |
| UPC | 733424628924 |
| Cutting Angle String | 135 Degrees |
| Included Components | 5 pieces of 23/64 cobalt drill bits |
| Number of Pieces | 5 |
| Material | Cobalt Steel |
| Finish Type | Bronze |
| Product information | |
|---|---|
| Number of Packs | 1 |
| Set Name | Hymnorq 5-Piece 23/64" M35 Cobalt Steel Drill Bit Set |
| Technical Details | |
|---|---|
| Part Number | LZXGY0207US |
| Material Type | Cobalt Steel |
| Number of Flutes | 2 |
| Style | |
|---|---|
| Finish Types | Bronze |
| Others | |
|---|---|
| Item Highlight | 135° Split Point for Precision Self-Centering, Fully Ground Straight Shank Dual Flutes for Smooth Evacuation & Storage Case |
| Product Type | Jobber Drill Bits |
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