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. These feature standard round straight shanks. The largest diameter is 6.5mm, allowing them to fit securely into any standard 3/8-inch (10mm) or 1/2-inch (13mm) drill chuck.

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. These bits feature a 135° Split Point tip. This design is self-centering and cuts immediately upon contact with the metal, preventing the bit from "walking" or skating across the surface.

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.

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Migiwata Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bits with Straight Shank Set of 13pcs to Cut Through Hard Metals Such as Stainless and Cast Iron

Migiwata Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bits with Straight Shank Set of 13pcs to Cut Through Hard Metals Such as Stainless and Cast Iron

Product ID: 452866193

Details

Cutting Angle String
135 Degrees
Cutting Diameter
3 Millimetres
Finish Type
Titanium
Material
Cobalt Steel
Shank Type
Straight

🎯135° Split Point - self-centers, no walking

🔥M35 Cobalt Steel - 5% cobalt for extreme heat resistance

🧰13 Metric Sizes - precision fit for every job

32835CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔩 Drill Like a Pro, Last Like a Legend

ORGANIZED PORTABLE - Durable labeled case with tilt-out holder keeps your bits sorted and ready for any professional job site or workshop.
VERSATILE METRIC RANGE - 13 carefully selected sizes from 1.5mm to 6.5mm, including rare intermediate sizes for specialized tasks.
EFFORTLESS CHIP EJECTION - Dual twist flute design rapidly clears debris, reducing friction and heat buildup for longer bit life and cleaner holes.
UNMATCHED HEAT RESISTANCE - M35 cobalt alloy endures up to 67 HRC hardness for drilling through stainless steel and cast iron without dulling.
PINPOINT PRECISION EVERY TIME - 135° split point geometry ensures instant self-centering and eliminates wandering—no pre-punch needed.

The Migiwata Metric M35 Cobalt Steel Drill Bit Set features 13 precision-engineered bits made from heat-resistant M35 cobalt alloy with a 135° split point tip for fast, accurate drilling through tough metals like stainless steel and cast iron. Its dual twist flute design ensures efficient chip removal and extended bit life, all housed in a durable, organized case perfect for professionals demanding reliability and precision.

Specifications

ASIN	B071ZRMWBN
Best Sellers Rank	#183,297 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #149 in Jobber Drill Bits
Brand Name	Hymnorq
Country of Origin	USA
Customer Reviews	4.4 4.4 out of 5 stars (1,110)
Cutting Angle String	135 Degrees
Cutting Diameter	3 Millimetres
Finish Types	Titanium
Included Components	13 pieces of metric cobalt drill bits
Item Dimensions	13 x 1.5 x 7 Centimeters
Item Weight	0.1 Kilograms
Manufacturer	Hymnorq
Material Type	Cobalt Steel
Model Number	DC023
Number of Flutes	2
Number of Packs	1
Number of Pieces	13
Part Number	DC023
Point Style	Split Point
Set Name	13pcs
Shank Type	Straight
Surface Recommendation	Alloy Steel
Tool Flute Type	straight,twist
UPC	610521863130
Unit Count	1.0 Count

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32835CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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