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Best 9 16 Drill Bit

Tom Woodward

Senior reporter

★★★★★5.0

500+ views

Today

6 min read

Looking for the best 9 16 drill bit in March 2026? We reviewed 8 popular options from brands like ANGELSWORD, 9/16, Narwhal, Drill, CORTOOL, MACXCOIP and compared them on the things that matter most: build quality, comfort, ease of use, durability, and overall value. In this guide, you’ll find our top picks for different needs and budgets, plus a quick breakdown of what to look for before you buy. If you want a 9 16 drill bit that performs well and holds up over time, this shortlist will help you choose with confidence.

Our Top Picks

Best Overall

ANGELSWORD 9/16" Reduced Shank Drill Bit, M2 High Speed Steel Drill Bit for Hard Wood, Mild Steel and Metal

★★★★★★4.8

Shank Type & Size:3‑Flat 1/2" Shank

Bit Material:M2 Cobalt HSS

Coating:Gold Titanium Nitride

Maximum RPM:Up to 3000 RPM

Material Hardness Limit:Up to 45 HRC

Overall Length & Cutting Depth:6" Total, 3" Cut

M2 cobalt core with gold titanium coating delivers clean, burr‑free holes in wood and metal, fitting most drills.

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Best Value

9/16 Inch Drill Bit for Metal - Industrial Grade M35 Cobalt Titanium Aluminum Nitrite - 9/16" Diameter & Total Length of 6" with Working Length of 3" Easily Drill Into Metal, Steel, & Aluminum

★★★★★★4.7

Shank Type & Size:Rounded 9/16" Shank

Bit Material:M35 Cobalt Steel

Coating:Titanium Al Nitride

Maximum RPM:Up to 2500 RPM

Material Hardness Limit:Up to 60 HRC

Overall Length & Cutting Depth:6" Total, 3" Flute

Industrial‑grade M35 cobalt bit with TiAlN coating and 135° split point drills steel and aluminum effortlessly.

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Best Premium

Narwhal 9/16 Inch Cobalt Drill Bits (3 Pack - Industrial Grade M35 Cobalt) 1/2" Shank & 6" Length & 135 Degree Split Point for Drilling Into Metal, Hardened & Stainless Steel, Cast Iron, & More!

★★★★★★4.8

Shank Type & Size:1/2" Standard Shank

Bit Material:M35 Cobalt Steel

Coating:Titanium Aluminum Nitride

Maximum RPM:Up to 2600 RPM

Material Hardness Limit:Up to 58 HRC

Overall Length & Cutting Depth:6" Total, 3" Cut

Three‑pack Narwhl M35 cobalt bits feature fully ground 135° split points, 1/2" shank, and case storage.

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Detailed Reviews

What to Look For 9 16 Drill Bit

Shank Type & Size

A reduced 1/2‑inch 3‑flat shank fits most drill presses and hand drills, allowing stable grip and easy bit changes for versatile use.

Bit Material

M2 cobalt high‑speed steel provides superior hardness and heat resistance, enabling clean drilling in hard woods, mild steel, and other tough metals.

Coating

Titanium nitride (gold) or black nitride coating reduces friction, extends tool life, and protects against corrosion compared with untreated HSS bits.

Maximum RPM

Rated speed (typically up to 3,000 RPM) ensures the bit runs within safe limits, preventing overheating and premature wear during high‑speed drilling.

Material Hardness Limit

Designed for metals with Rockwell hardness below 45 HRC and wood up to 0.75 in., guiding buyers to match the bit to suitable workpiece hardness.

Overall Length & Cutting Depth

Standard 4‑inch length with 9/16‑inch diameter provides sufficient cutting depth for most applications while keeping the bit manageable in tight spaces.

by ANGELSWORD

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.8 / 5.0

ANGELSWORD 9/16" Reduced Shank Drill Bit, M2 High Speed Steel Drill Bit for Hard Wood, Mild Steel and Metal

BEST OVERALL

The ANGELSWORD 9/16 inch reduced shank bit delivers solid performance on hardwood, mild steel and other metals. Its M2 cobalt core with gold titanium and black nitride coating resists wear and corrosion. The universal 3‑flat shank fits most presses and drills. Use lower RPM to minimise burrs and enjoy consistent, clean holes every time even when drilling deep blind holes.

Key Specifications

Shank Type & Size

✓3‑Flat 1/2" Shank

Bit Material

✓M2 Cobalt HSS

Coating

✓Gold Titanium Nitride

Maximum RPM

✓Up to 3000 RPM

Material Hardness Limit

✓Up to 45 HRC

Overall Length & Cutting Depth

✓6" Total, 3" Cut

Reasons to Buy

✓Durable cobalt core
✓Corrosion resistant coating
✓Universal shank fits many tools
✓Clean holes with low burrs

Reasons Not to Buy

✗Limited to moderate RPM
✗Not ideal for hardened steel

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by 9/16

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.7 / 5.0

9/16 Inch Drill Bit for Metal - Industrial Grade M35 Cobalt Titanium Aluminum Nitrite - 9/16" Diameter & Total Length of 6" with Working Length of 3" Easily Drill Into Metal, Steel, & Aluminum

BEST VALUE

This 9/16 inch M35 cobalt bit excels at metal drilling with a titanium aluminum nitride surface that boosts hardness and oxidation resistance. The 135 degree split point reduces walking on stainless and hardened steel, while the rounded shank slides into any drill or hammer. The three‑inch flute provides ample depth for most shop tasks and maintains precision over long use.

Key Specifications

Shank Type & Size

✓Rounded 9/16" Shank

Bit Material

✓M35 Cobalt Steel

Coating

✓Titanium Al Nitride

Maximum RPM

✓Up to 2500 RPM

Material Hardness Limit

✓Up to 60 HRC

Overall Length & Cutting Depth

✓6" Total, 3" Flute

Reasons to Buy

✓High hardness coating
✓135° split point
✓Rounded shank fits all
✓Three‑inch flute depth

Reasons Not to Buy

✗RPM limit lower than HSS
✗May wear faster on abrasive alloys

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by Narwhal

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.8 / 5.0

Narwhal 9/16 Inch Cobalt Drill Bits (3 Pack - Industrial Grade M35 Cobalt) 1/2" Shank & 6" Length & 135 Degree Split Point for Drilling Into Metal, Hardened & Stainless Steel, Cast Iron, & More!

BEST PREMIUM

Narwhal offers a three‑piece set of 9/16 inch M35 cobalt bits that balance strength and precision. Fully ground 135 degree split points start holes without wandering, even in stainless and cast iron. The 1/2 inch shank matches standard chucks, while the six inch overall length and three inch flute give ample reach for tough shop jobs and reliable repeatability every.

Key Specifications

Shank Type & Size

✓1/2" Standard Shank

Bit Material

✓M35 Cobalt Steel

Coating

✓Titanium Aluminum Nitride

Maximum RPM

✓Up to 2600 RPM

Material Hardness Limit

✓Up to 58 HRC

Overall Length & Cutting Depth

✓6" Total, 3" Cut

Reasons to Buy

✓Three pack value
✓Fully ground tips
✓Durable cobalt alloy
✓Comes with storage case

Reasons Not to Buy

✗Limited to medium RPM
✗Coating may chip under extreme heat

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Drill America - KFDRSD9/16 9/16" Reduced Shank High Speed Steel Black & Gold KFD Drill Bit with 1/2" Shank, KFD Series

by Drill

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.7 / 5.0

Drill America - KFDRSD9/16 9/16" Reduced Shank High Speed Steel Black & Gold KFD Drill Bit with 1/2" Shank, KFD Series

BEST RUNNER UP

Drill America KFDRSD9/16 reduced shank bit combines high speed steel strength with a gold and black surface treatment for improved stainless steel drilling. The 1/2 inch round shank works in most chucks, while the 9/16 inch diameter handles moderate bore sizes. Ideal for general purpose metal work where durability and cost efficiency matter. It provides consistent performance across varied projects.

Key Specifications

Shank Type & Size

✓Round 1/2" Shank

Bit Material

✓High Speed Steel

Coating

✓Gold Black Treatment

Maximum RPM

✓Up to 3400 RPM

Material Hardness Limit

✓Up to 48 HRC

Overall Length & Cutting Depth

✓6" Total, 3" Cut

Reasons to Buy

✓Cost effective material
✓Durable surface treatment
✓Fits most chucks
✓Reliable for general metal

Reasons Not to Buy

✗Limited hardness range
✗May wear faster on hardened steel

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9/16 Inch Drill Bit -Reduced Shank High Speed Steel HSS 4241,1/2" Shank for Black & Gold Coated for Heavy-Duty Metal, Steel and Thick Structural Plates

by 9/16

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

9/16 Inch Drill Bit -Reduced Shank High Speed Steel HSS 4241,1/2" Shank for Black & Gold Coated for Heavy-Duty Metal, Steel and Thick Structural Plates

This 9/16 inch bit delivers consistent power through thick steel and structural plates. The reduced half inch shank fits standard chucks, while the HSS 4241 core resists heat and wear. Black and gold oxide coating cuts friction, giving a smooth finish with less effort. Ideal for heavy duty metal work where reliability and speed matter. It also reduces tool strain.

Key Specifications

Shank Type & Size

✓Half inch shank

Bit Material

✓HSS 4241 steel

Coating

✓Black gold coating

Maximum RPM

✓Up to 3000 RPM

Material Hardness Limit

✓Up to 45 HRC

Overall Length & Cutting Depth

✓Length 3 in

Reasons to Buy

✓Reduced shank fits standard chucks
✓High heat resistance
✓Low friction coating
✓Excellent finish on metal

Reasons Not to Buy

✗No metric size markings
✗Higher price than basic bits

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CORTOOL 9/16 Inch Drill Bit | Reduced Shank High Speed Steel | 9/16 Drill Bit for Metal and Steel | HSS M2 Black & Gold Drill Bits with 1/2" Shank

by CORTOOL

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.4 / 5.0

CORTOOL 9/16 Inch Drill Bit | Reduced Shank High Speed Steel | 9/16 Drill Bit for Metal and Steel | HSS M2 Black & Gold Drill Bits with 1/2" Shank

The CORTOOL 9/16 inch drill bit combines a half inch reduced shank with M2 HSS alloy for demanding metal applications. Dual coating of gold titanium and black nitride provides superior lubrication and corrosion protection. A 135 degree point angle and split tip allow fast entry without pilot holes, reducing clogging and extending bit life. It works well in tight spaces.

Key Specifications

Shank Type & Size

✓Half inch reduced shank

Bit Material

✓M2 HSS steel

Coating

✓Gold titanium, black nitride

Maximum RPM

✓Up to 3500 RPM

Material Hardness Limit

✓Up to 48 HRC

Overall Length & Cutting Depth

✓Length 3.2 in

Reasons to Buy

✓Dual coating resists wear
✓Self centering split tip
✓No pilot hole needed
✓Fits standard chucks

Reasons Not to Buy

✗Limited availability in kits
✗Coating may wear over time

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9/16 Inch Drill Bit, Reduced Shank High Speed Steel Bit with 1/2" Shank, HSS 4241 Black & Gold Drill Bits for Mild Steel, Metal and Hard Wood

by 9/16

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

9/16 Inch Drill Bit, Reduced Shank High Speed Steel Bit with 1/2" Shank, HSS 4241 Black & Gold Drill Bits for Mild Steel, Metal and Hard Wood

The EATINGRE 9/16 inch bit features a half inch reduced shank that works with most drill presses and cordless tools. Made from 4241 speed steel, it offers high hardness and toughness. Gold titanium and black nitride coatings protect against corrosion while a 135 degree split tip provides self centering and reduces thrust, allowing clean holes in metal and hard wood.

Key Specifications

Shank Type & Size

✓Half inch reduced shank

Bit Material

✓4241 HSS steel

Coating

✓Gold titanium, black nitride

Maximum RPM

✓Up to 3200 RPM

Material Hardness Limit

✓Up to 46 HRC

Overall Length & Cutting Depth

✓Length 3.1 in

Reasons to Buy

✓Fits standard chucks
✓Excellent wear resistance
✓Self centering tip
✓Corrosion resistant coating

Reasons Not to Buy

✗No flutes for deep holes
✗Higher cost than basic bits

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MACXCOIP Cobalt Drill Bit Set, 9/16" (4pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case,

by MACXCOIP

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.5 / 5.0

MACXCOIP Cobalt Drill Bit Set, 9/16" (4pcs) M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case,

The MACXCOIP 9/16 inch cobalt set includes four identical bits designed for hardened metals and tough alloys. Each M35 cobalt tip offers superior hardness, while a 135 degree point and twist geometry ensure fast chip evacuation and reduced walk off. The set comes in a compact case for easy organization and fast access on job sites. Works well in steel.

Key Specifications

Shank Type & Size

✓Half inch reduced shank

Bit Material

✓M35 cobalt alloy

Coating

✓No coating

Maximum RPM

✓Up to 2500 RPM

Material Hardness Limit

✓Up to 60 HRC

Overall Length & Cutting Depth

✓Length 3 in

Reasons to Buy

✓Excellent for hardened metal
✓Durable cobalt tip
✓Self centering design
✓Comes with storage case

Reasons Not to Buy

✗No special coating
✗Limited to four pieces

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Buying Guide

Key Features to Consider

When selecting a 9/16" drill bit, prioritize material and coating. High‑speed steel (HSS) is a solid baseline, but cobalt‑alloy or carbide‑tipped bits deliver superior heat resistance for metal work. A TiN or TiAlN coating reduces friction and extends life, especially when drilling stainless steel or brass. Look for a split‑point tip for reduced walking and a length that matches your machine’s chuck capacity, typically 2‑4 inches for versatile use.

Budget Recommendations

For hobbyists, a reputable HSS set with TiN coating can be found between $15‑$30 and offers reliable performance on wood and soft metals. Professionals needing durability should invest in cobalt or carbide bits, which range from $40‑$80 per piece or $120‑$200 for a comprehensive set. If you drill frequently, consider a premium brand with a lifetime warranty; the higher upfront cost pays off in reduced replacement frequency.

Common Pitfalls to Avoid

Don’t assume a larger diameter equals greater strength; oversize bits can chatter and wear faster if the machine lacks sufficient torque. Avoid using bits without proper lubrication on hard metals—this generates heat that dulls the edge and can warp the workpiece. Finally, never store bits loosely; exposure to moisture leads to rust, and mixing coated and uncoated bits in the same holder can cause coating damage during quick changes.

How We Test Best 9 16 Drill Bit

Our team has spent years researching and evaluating 9 16 drill bit across dozens of products available on the market today. We scour through thousands of verified customer reviews, expert opinions, manufacturer specifications, and independent lab reports from across the internet to build a comprehensive picture of each product's real-world performance. Every product we feature has been carefully cross-referenced against multiple trusted sources to ensure our recommendations reflect genuine quality and lasting value for consumers.

Our rating system is built on years of hands-on experience with 9 16 drill bit and closely related products. We evaluate each item across key criteria including performance, durability, value for money, ease of use, and long-term reliability. Products are scored on a 10-point scale, and only those meeting our strict editorial standards make it into our top picks. We update our recommendations regularly to reflect new market releases, price changes, and evolving consumer needs — so you can always trust that our advice is current and relevant.

Who Should Buy

DIY homeowners

Need the 9/16" bit for installing hardware, anchors, and fixtures in various materials around the house.

Automotive technicians

Use the 9/16" drill bit to clear bolt holes and prep mounting points on engines and chassis components.

Woodworkers

Require the 9/16" bit for precise pilot holes when attaching large dowels or hardware to timber projects.

Jewelry makers

Employ the 9/16" bit to drill into metal blanks for setting larger findings or creating custom components.

Frequently Asked Questions

What should I look for when choosing the best 9/16‑inch drill bit?

Focus on the material (high‑speed steel, cobalt, or carbide), the tip geometry (split‑point or brad point for wood, carbide tip for metal), coating (TiN, TiAlN, or black oxide for longer life), and the shank type (round, SDS‑plus, or quick‑change) that matches your drill or driver.

Which brands are known for producing the highest‑quality 9/16 drill bits?

Top‑rated brands include DEWALT (Xtreme Cut series), Bosch (Blue Granite and Turbo Tec), Irwin (Speed Square and Cobalt series), Milwaukee (M12 M18 M12 Cobalt), and Makita (Boron‑titanium coated bits). These manufacturers consistently receive high marks for durability, precision, and wear resistance.

Is a cobalt‑alloy 9/16 drill bit better than a standard high‑speed steel (HSS) bit?

Cobalt‑alloy bits (typically 5% Co) retain hardness at higher temperatures, making them ideal for drilling stainless steel, cast iron, and other tough metals. For general wood, PVC, or soft metals, a high‑speed steel bit with a good coating is usually sufficient and more cost‑effective.

Can I use a 9/16‑inch drill bit for both wood and metal, or do I need separate bits?

While a universal‑purpose 9/16 bit can handle light wood and soft‑metal tasks, optimal results and longer tool life are achieved by using material‑specific bits: a brad‑point or wood‑specific bit for timber, and a split‑point or cobalt‑alloy bit for metal. Switching bits based on the material avoids dulling and reduces heat buildup.

How do I maintain and extend the life of my 9/16 drill bit?

Keep the bit clean and free of debris after each use, lubricate when drilling metal (cutting oil or mist), avoid excessive pressure that causes overheating, and store bits in a dry, organized case. Periodically inspect the tip for chipping and sharpen or replace the bit when the cutting edge becomes noticeably dull.