Top 10 Hardened Steel Drill Bits – Jobber Drill Bits

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1. Mars-Tool


2-Pack Solid Carbide Drill Bit for Hardened Steel Hard Ness HRa 91.3 Aerospace Standard K20 Tungsten Carbide Jobber Length Twist Drill for Metal 118 Degree Four Facet Point Angle Size 5/32 inch

Mars-Tool #ad - Smooth finish on the bits increases chip flow. Our jobber length, precision ground carbide drills are designed for high feed rates with good chip disposal. Premium bright finish 2/pack multi-purpose solid carbide drill bits provide better rigidity than high speed steel bits. Recommended for use on aircraft metals chrome titanium inconel stainless steel alloys steel Low-Medium-High Carbon Steel Aluminum Copper Glass Plastics Composite Materials Cast Iron -- Our Carbide drills stay sharp many times longer than traditional steel bits making them ideal for the toughest of applications! Optimal design for metal work 118° four facet point angle minimizes drill wander and assures accurately sized holes.

It is extremely heat resistant and used for high speed applications. Tungsten carbide is a composite material, it is a composite of tungsten carbide powder mixed with cobalt as a binder metal, although it looks like a metal, the resulting material is more like a ceramic than a metal.

Spiral flutes are constructed with a higher flute angle to remove chips more easily. It will chew down into most anything but the hardness makes them brittle with virtually no plasticity. These drills like a a rigid dri. It is a very hard material being a 9 on the Mohs scale where diamond is a 10 and hard steel around 5. Unstable drilling can result in a broken bit. Our tungsten carbide wc bits has the advantage of cutting metal either "wet" or "dry" and they provide solutions for many businesses such as aerospace drilling jobs for aircraft mechanics, precision machining, hobby supply, etc.
BrandMars-Tool #ad
ManufacturerMars-Tool #ad
Part NumberMT532SCD



BOSCH CO14B 14 Pc. Cobalt M42 Drill Bit Set

BOSCH #ad - Cobalt m42 drill bit – provides upgraded m42 cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum. Thick web-helix design – provides additional stability in tough applications. Surface-hardened tip – penetrates tough abrasive materials. High-heat resistant bits – withstand high-temperature applications for extended periods of time. Enhanced m42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits.
BrandBOSCH #ad
ManufacturerBosch #ad
Part NumberCO14B
WarrantyProduct Defects Only



Cast Iron and Wood Plastic with Indexed Storage Case, 1/16"-3/8", Stainless Steel, COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal

COMOWARE #ad - Professional & widely use: m35 cobalt hss is more suitable for hardened material. Durable and strong. Twist design & performance: precise 135°split point, gold oxide finish and round straight shanks.

Particularly successful in cutting through hard metals such as stainless steel, high temperature alloy, cast iron, hard plastics and woods, titanium alloy, and also can be used for softer materials. Size included: 15pcs jobber length drill bit set with plastic storage case including sizes:1/16" 2pc, 5/16" 1pc, 9/64" 1pc, 5/64" 1pc, 3/16" 1pc, 1/4" 1pc, 5/32" 1pc, 7/32" 1pc, 7/64" 1pc, 1/8" 2pc, 3/32" 2pc, 3/8" 1pc.

High quality material: 5% cobalt high Speed Steel M35 provide extended tool life compared to ordinary drill bits. 100% satisfaction guarantee: if you are not 100% satisfied with your purchase for any reason whatsoever simply please feel free to contact us. Prevent walking, clear chips and particles faster. Produced by precision fully ground which ensures chips move smoothly.
ManufacturerCOMOWARE #ad



Hardened Steel, XLCMSY Cobalt Drill Bit Set, 1/16"-1/4" 13 Pcs, Stainless Steel, M35 HSS Straight Shank Twist Drill Heat Resistant Metal Drill Bits for Hard Metal, Cast Iron and Wood

XLCMSY #ad - Multiple sizes & widely used the metal drill bits set for steel are available 13 sizes to meet your different needs, 7/32", 15/64", 1/4". It is perfect match for home DIY, workshop or vehicles repair shop. These cobalt drill bits are widely used in metalworking, 13/64", 3/16", drill bit sizes include : 1/16", it is ideal for cutting hard alloys such as stainless steel and cast iron, 11/64", 5/64", 1/8", 7/64", 9/64", 3/32", 5/32", not suitable for glass or ceramic.

Practical design the metal drill bits kit features a straight shank design that makes it easier to fix and precisely machine, saving time and improving work efficiency. Safe & eco-friendly high speed steel with 5% cobalt, durable, providing longer tool life and reducing environmental pollution, It is a very practical and user-friendly drill bit for cutting through hardened material, safe and eco-friendly, golden surface treatment holds up lubricant better for smoother drilling. Heat resistant this straight shank twist drill set is made of 5% cobalt high speed steel, suitable for drilling high hardness materials, It is super heat resistant and wear resistance can cut hard metals quickly, adding molybdenum and cobalt to form a hardened alloy with a Rockwell hardness of 67, up to 10 times life than ordinary HSS drill bits.

Lightweight & durable designed with a 135 degree split point, preventing walking and cutting stainless steel more precisely, eliminating the need for a center punch, these drill bits are very lightweight, making cutting faster and less powerful, thanks to its precision grinding inclined blade design, each bit ensures fast drilling with excellent chip removal.
BrandXLCMSY #ad
ManufacturerXLCMSY #ad
Height0.6 Inches
Length5.3 Inches
Width3 Inches
Part NumberSY-0502

5. Viking Drill & Tool


Viking Drill and Tool 44150 SP-29 Type 240-UB 135 Degree Split Point Magnum Super Premium Jobber Drill Set 29 Piece

Viking Drill & Tool #ad - Nas 907b heavy Duty Jobber. Special hi-molybdenum tool steel/ Gold Oxide. Set premium high speed steel heavy Duty NAS 907B 135-Degree Split Point. Precision ground point, flutes, body, clearance and drill diameter for ultimate accuracy and performance.135-degree split point, 1/16 - 1/2 by 64ths. 29 pc.
BrandViking Drill & Tool #ad
ManufacturerViking #ad
Height1.88 Inches
Length7.13 Inches
Width4.25 Inches
Part Number44150

6. Irwin Tools


M35 Cobalt Steel, IRWIN Drill Bit Set, 29-Piece 3018002

Irwin Tools #ad - Cobalt drill Bit Set. 5% cobalt for higher Heat & Abrasion Resistance. Heavy duty web construction For Strength & Durability. 29 piece. Sizes 1/16 inch -1/2 inch in 1/64 inch increments, 135 Degree Split Point To Minimize Walk.
BrandIrwin Tools #ad
ManufacturerIRWIN #ad
Height4 Inches
Length12 Inches
Weight4.5 Pounds
Width7.5 Inches
Part Number3018002

7. Lichamp


Lichamp 1/4" HSS Cobalt Drill Bits 10PCS with Three Flute for Hard Metal, Hardened Stainless Steel and Cast Iron

Lichamp #ad - Unique 3x flute design - lichamp three flute patent design drill bit clears chips and particles faster, provide you with more efficient drilling experience.

4x lifespan material - made from industrial grade M35 high-speed steel with 5% cobalt provides hardness for wear resistance, withstands max 1100 degreeF. Smoothly drilling - 135-degree split point tip & twist design increases cutting speed with self-centering and prevents skating starts or walking. 1/4" cobalt drill bit - round straight shanks, include 10 pack 1/4-inch diameter hss drill bit with well organized clear ps case. Multiple application - ideal for drilling in heavy-duty tough metal, including hard abrasive alloy metal, hardened stainless steel or cast iron.
BrandLichamp #ad
ManufacturerLichamp #ad
Part NumberCDB-A01014

8. Tbrand


Cobalt Drill Bit Set M35 HSS 13-Pcs Set Jobber Drill Bit Kit for Stainless Steel,Hard Metal,Cast Iron and Wood Plastic,1/16"-1/4"

Tbrand #ad - Chip removal chute:classic humanized double spiral chip evacuation groove design. Smooth design: with 135 degree self-centering tip, Hardened and polished to form a sharp cutting edge, the precision grinding process provides a smooth surface and high grinding accuracy, apply pressure evenly, helping you to drill through surfaces with ease.

Convenient 13-piece set to meet your work needs, copper, aluminum alloy and other metal materials; for drilling in plastic, cast iron, suitable for home renovation DIY and general industrial applications. Easy to carry and fold to save bulk and easy to store. The grooves-2 grooves help remove chips and debris from the drill bit, reducing friction and heat, thus achieving a faster, cooler drilling process. The box is marked with the inch size of each drill bit, from 1/16 inch to 1/4 inch, for easy access.

Offer excellent performance and durability. Package: the twist diamond set comes with its own red outer box for easy storage and outer box snap hook for easy locking storage with a portable hook design. Superior materialsthese twist drill bit set made of high-quality M35 cobalt-containing high-speed steel, resistant to high temperature and grindingIt, which allows the drill to easily drill on hard surfaces then quickly achieve the purpose. Widely application: this set of twist drill is especially suitable for drilling in stainless steel, wood and so on.
BrandTbrand #ad
ManufacturerTbrand #ad
Height0.5 Inches
Length5.2 Inches
Width3.1 Inches
Part NumberVT1301



Cast Iron and Wood Plastic, Stainless Steel, BAIDETS Twist Drill Bit Set 13 Pcs, M35 High Speed Steel Jobber Drill Bit Set, 1/16"-1/4" with Metal Storage Case, for Hardened Metal

BAIDETS #ad - Perfect suitable for drilling holes as stainless Steel, Cast Iron, Galvanized Pipe, Copper, Aluminum Alloy, Wood and Other Softer Metals. 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure.

This drill bit fits the majority of power drill currently on the market and with a metal storage case for easy storage and DIY, 1/4", 5/32", 3/16", 15/64", 7/32", 13/64", 11/64", household maintenance and repair. Straight shank prevents walking and makes drilling precise and faster. Fully ground spiral groove design clears particles quickly, decreases friction and heat for faster drilling performance.

Set includes 13 pieces twist drill bit, 3/32", 1/8", most commonly used sizes: include 1/16", 5/64", 9/64", 7/64", to satisfy all your needs. Twist drill bits made from m35 cobalt high speed Steel and contain 5% Cobalt, which increases wear-resistance, durability and extra longer life span, ideal for repeated drilling in metalworking.
BrandBAIDETS #ad
ManufacturerBAIDETS #ad
Part NumberBD014

10. BeHappy


Cast Iron and Wood Plastic with Indexed Storage Case, M35 Cobalt Drill Bit Set, Stainless Steel, 1/16"-1/2", High Speed Steel Twist Drill Bit Set for Hardened Metal, BeHappy Drill Bit Set 29pcs

BeHappy #ad - If you have any questions, please feel free to contact us, we will do our best to serve you. Hss drill bit set :hss cobalt drill bit set for hardened steel has excellent cutting performance, drill bit set 29pcs can be used for a long time, The cutting edge is hardened and honed for sharpness, with superior sharpness, accurate cutting without shaking.

Drill bit set is suitable for most brands on the market. Reliable quality and considerate service. M35 cobalt characteristics : m35 cobalt drills bit set is effective in drilling tough, superalloy, cast iron, titanium alloy, high tensile strength materials,drill bit is especially good at cutting hard metals such as stainless steel, hard plastic and wood. Size included: drill bit set 29pcs include 1/16", 19/64", 1/4", 3/8", 7/16", 27/64", 11/64", 3/16", 9/64", 3/32", 7/64", 1/8", 9/32", 31/64", 5/64", 25/64", 5/16", 17/64", 11/32", 23/64", 29/64", 15/64", 15/32", 13/64", 7/32", 5/32", 21/64", 13/32", 1/2", which can meet more requirements.1

135° split point: cobalt drill bit set for hardened steel is 135° split point tip and torsional design to improve cutting speed, self-centering, prevent walking, and faster chip and particle removal. Organized holder: cobalt drill bit set includes a drill stand with size index for easy storage and organization. It can also be used in soft materials.
BrandBeHappy #ad
ManufacturerNA #ad
Height2.56 Inches
Length8.27 Inches
Width4.92 Inches
Part NumberGoldmoon Industry
ModelGoldmoon Industry