15-Piece M35 Cobalt Drill Bit Set 1/16"-3/8" for Stainless Steel
- M35 COBALT STEEL FOR HARD METALS: Crafted from premium M35 high-speed steel with 5% cobalt, these drill bits deliver extreme heat resistance and superior durability. Perfectly engineered for drilling tough materials like stainless steel, cast iron, and high-temperature alloys without dulling quickly.
- 15-PIECE COMPREHENSIVE SET: Includes the most commonly used fractional sizes from 1/16" to 3/8". To maximize the lifespan of your set and prevent job interruptions, we have thoughtfully included duplicates for the most frequently used smaller sizes: 1/16" (x2), 3/32" (x2), and 1/8" (x2).
- 135° SPLIT POINT & FAST CLEARANCE: The precision 135-degree split point prevents walking and provides immediate self-centering—no center punch required. Fully ground dual twist flutes ensure rapid chip removal, reducing friction and heat buildup for cleaner, faster, and more accurate cuts.
- UNIVERSAL STRAIGHT SHANK: Designed with a standard round straight shank featuring a chamfered end for quick and secure clamping. Fully compatible with standard cordless drills, corded power hand drills, and drill presses, ensuring a firm, slip-free grip during heavy-duty tasks.
- PREMIUM ABS INDEX CASE: Housed in a rugged, impact-resistant ABS plastic case. The customized index slots keep your cobalt drill bits securely organized, easy to identify, and protected from damage, making it highly portable for professionals and DIY enthusiasts on any job site.
Estimated shipping
Select a product to estimate shipping.15-Piece M35 Cobalt Drill Bit Set
This 15-piece M35 cobalt steel set is built for extreme heat and durability. Includes sizes: 1/16"(x2), 5/64", 3/32"(x2), 7/64", 1/8"(x2), 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8". Perfect for precise drilling in stainless steel and cast iron. Comes in a secure index case.
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
Especificacions
| Main Specification | |
|---|---|
| Recomanació de superfície | Fusta, Plàstic, Ferro, Acer sense fil, Coure, Valsfrance. kgm, Castella el ferro, aliatge d' alumumi, Angle Steel |
| Slit Diametre | 1/8, 3/16, 1/4, 5/16, 3/8 inches, 5/64, 7/64, 5/32, 1/16, 3/32, 9/64, 7/32 |
| Fabricant | Hymnoq |
| Comptador d' unitats | 15 comptar |
| Estil del punt | Punt d' divisió |
| Tipus de Shank | Escala |
| Tipus de Flauta d' eina | Espiral |
| Marca | HYMNORQ |
| UPC | 733424628719 733424628801 |
| Cadena d' angle de retall | 135 graus |
| Components inclosos | 15 pieces of cobalt drill bits |
| Nombre de peces | 15 |
| Material | Cobalt Steel |
| Tipus d' acabat | Bronzeturkey. kgm |
| Product information | |
|---|---|
| Nombre de paquets | 1 |
| Estableix el nom | 15-Piece |
| Technical Details | |
|---|---|
| Número de " part " | LZXGY0235US |
| Tipus de material | Cobalt Steel |
| Nombre de Flates | 2 |
| Style | |
|---|---|
| Tipus d' acabat | Bronzeturkey. kgm |
| Altres | |
|---|---|
| Ressaltat de l' element | kank directament, Cuts Cast Iron, 135° Self-Centering Split Point, Includes Extra Small Bits, Impact-Resistant ABS Index Case |
| Tipus de producte | Jobber Drill Bits |
| Mínim Bore Diametre | 0, 06 polzades |
| Etiquetes | |
|---|---|
| Etiquetes | |