Hymnorq 1/4 Inch Drill Bits 10pcs for Metal, 8% Cobalt M42 Grade, Enhanced Hardness High Heat Resistance, No-skate Split Point, 10X Life VS. Standard Bits, for Stainless Steel Cast Iron Titanium Metal

M42 COBALT STEEL - Constructed by M42 cobalt, a molybdenum series high-speed steel alloy with an additional 8 percent cobalt, measuring high hardness up to HRC67 - 69.

SPLIT POINT - 135-degree split point tip for self-centering and safe pilot hole drilling, even in slanting surfaces, in pipes and welds. Centre punching is not necessary. Direct drilling can be done without prior centering or drilling of a pilot hole

GROUND BITS - The bits are fully ground for a smooth surface, which allows even chip removal, reduction of chip friction, extremely true running and precise round holes.

WIDELY USED - Ideal for metal manufacturing industries because of its superior red hardness as compared to more conventional high-speed steels. Designed for durability, high heat resistance, and hardened surface. Used for drilling various metals including stainless steel, cast iron, titanium, light-gauge metal, and aluminum.

LOWER COST PER HOLE - higher durability than identically constructed HSS drill bits used under the same operating conditions. Much longer tool life means lower cost per hole drilled, although the price is higher.

size:

1/4"(10pcs)

Retail Price: $ 22.99

Wholesale Price: Inquire Now

Hymnorq Cobalt Steel Twist Drill Bits

These super hard cobalt bits can withstand high temperatures up to withstand temperatures up to 1,100 degrees Fahrenheit, making them an ideal cutter for stainless steel, as well as softer materials like cast iron, titanium and other hard or abrasive metals.
The twist drill bits for metal are made of solid M42 cobalt and can be resharpened.
These jobber length twist drill bits are manufactured to the German DIN338 standard.
Three-flat shank - deliver better bit grip and higher torque
Thick web-helix design – provides additional stability in tough applications
Surface-hardened tip – penetrates tough abrasive materials
Hardened exterior – made to provide durability in stainless steel, cast iron, titanium, light-gauge metal and aluminum

Key Features


Self-centering 135 Degree Split Point	Wear Resistant	Smooth Drilling	Long Life


Be Vertical and Steady Keep the drill bit vertical with the stuff's surface to be drilled. Tilted bit is prone to break during drilling. Be sure to make both the bit and the workpiece stable.	Use Cooling Liquid Friction between bit and metal will accumulate an amount of heat. It's necessary to use cooling liquid during drilling to keep the bit cool. Otherwise, the bit may fry(melt) or only last a short time. It's both ok to use lubricant oil and to pour water.	Do It Slow Drilling metal requires low RPM. Please use a device of which the drilling speed can be adjusted. Be careful when you use an electric drill. The RPM could be set too high. The thicker the bit, the slower speed should be. If you're not sure, please start from the lowest RPM and pressure.	Drill Press Recommanded It's highly recommended that you use a drill press to drill thick metals. It's stable, powerful and (RPM) adjustable. If a drill press isn't available, electric drill or charging drill will do the job, too. However, it's more likely you'll meet problems unless you're really experienced.

This website follows the safe harbor principle. If any infringement, please inform us in time and we will delete it in time. About safe harbor，please click here to learn more.

After Sale Service:

1 Insurance Policy: Click to go to the Help Center to view the Insurance Policy

2 The rules apply and summit for receive compensation

3 The conditions of accrual for amount insurance

5 Damage to the parcel during international shipping, which resulted in damage to the goods in it

6 Loss of individual goods under international shipment The absence individual goods in the parcel

7 Non-compliance individual goods in color, size, complications Damage to the goods during international shipment

8 Returns Policy: Click to go to the Help Center to view the Returns Policy

All Category
All Category

Women's Clothings

Men's Clothings

BEST SELLERS

Product introduction

Shipping Notices

Product Description

Hymnorq Cobalt Steel Twist Drill Bits

These super hard cobalt bits can withstand high temperatures up to withstand temperatures up to 1,100 degrees Fahrenheit, making them an ideal cutter for stainless steel, as well as softer materials like cast iron, titanium and other hard or abrasive metals.
The twist drill bits for metal are made of solid M42 cobalt and can be resharpened.
These jobber length twist drill bits are manufactured to the German DIN338 standard.
Three-flat shank - deliver better bit grip and higher torque
Thick web-helix design – provides additional stability in tough applications
Surface-hardened tip – penetrates tough abrasive materials
Hardened exterior – made to provide durability in stainless steel, cast iron, titanium, light-gauge metal and aluminum

Key Features


Self-centering 135 Degree Split Point	Wear Resistant	Smooth Drilling	Long Life


Be Vertical and Steady Keep the drill bit vertical with the stuff's surface to be drilled. Tilted bit is prone to break during drilling. Be sure to make both the bit and the workpiece stable.	Use Cooling Liquid Friction between bit and metal will accumulate an amount of heat. It's necessary to use cooling liquid during drilling to keep the bit cool. Otherwise, the bit may fry(melt) or only last a short time. It's both ok to use lubricant oil and to pour water.	Do It Slow Drilling metal requires low RPM. Please use a device of which the drilling speed can be adjusted. Be careful when you use an electric drill. The RPM could be set too high. The thicker the bit, the slower speed should be. If you're not sure, please start from the lowest RPM and pressure.	Drill Press Recommanded It's highly recommended that you use a drill press to drill thick metals. It's stable, powerful and (RPM) adjustable. If a drill press isn't available, electric drill or charging drill will do the job, too. However, it's more likely you'll meet problems unless you're really experienced.

Shipping Notices:

1 Contraband and limited items:

Clgarette,Alcohol,Contraband ?Do not accept

Liquid,cream or cosmetics items are quantity limited in shopping agent service

Chinese medicine is limited to ship by Chinese exporting goods.

2 Limitation for different shipping methods:

3 Yoybuy Product's Label:

Sensitive Product(SEN)

Product With battery

Cream

Powder

Dangerous Products

4 Volume weight Requested:

volume weight=length*height*Width/5000

one side must be less than 120cm，otherwise there is additional fee；250cm products can not be accept；

Any side must be less than 60cm，otherwise you will be charged the greater one between real weight and volume weight，more than 120cm will be not accepted.