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Best 7 32 Drill Bit

Tom Woodward

Senior reporter

★★★★★5.0

500+ views

Today

8 min read

Looking for the best 7 32 drill bit in March 2026? We reviewed 12 popular options from brands like Bosch, 7/32, RCINDUS, 7/32-Inch, DEWALT, 12, SALI, amoolo, Narwhal 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 7 32 drill bit that performs well and holds up over time, this shortlist will help you choose with confidence.

Our Top Picks

Best Overall

Bosch CO2141B 7/32 in. X 3-3/4 in. Cobalt M42 Drill Bit

★★★★★★4.8

Material & Coating:M42 cobalt alloy

Overall Length:3-3/4 inch total

Tip Geometry:135 degree split point

Flute & Helix Design:Standard spiral flute

Maximum RPM Rating:Up to 3000 rpm

Shank Size & Compatibility:1/2 inch shank universal

Bosch's M42 cobalt bit delivers unmatched heat resistance and longevity, cutting stainless and titanium with precision.

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Best Value

7/32 Inch Drill Bit (3 Pack) Industrial Grade M35 Cobalt Titanium Aluminum Nitrite - 7/32" Diameter & Total Length of 3-3/4" with Working Length of 2-1/2" Easily Drill Into Metal, Steel, & Aluminum

★★★★★★4.8

Material & Coating:M35 cobalt alloy

Overall Length:3-3/4 inch overall

Tip Geometry:135 degree split point

Flute & Helix Design:TiAIN coated spiral

Maximum RPM Rating:Up to 2800 rpm

Shank Size & Compatibility:1/2 inch shank universal

Three-pack M35 cobalt bits with TiAIN coating provide oxidation resistance, reduced walking, and storage convenience at low cost.

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Best Premium

RCINDUS (15PCS) 7/32" Cobalt Drill Bit, HSS M35 Metal Drill Bits for Steel, Stainless Steel, Cast Iron, Hard Plastic and Wood

★★★★★★4.8

Material & Coating:M35 cobalt steel

Overall Length:3-3/4 inch total

Tip Geometry:135 degree split point

Flute & Helix Design:Standard helix flute

Maximum RPM Rating:Up to 2600 rpm

Shank Size & Compatibility:1/2 inch shank universal

RCINDU's 15-piece M35 set offers versatile material drilling, uniform hardness for easy sharpening, and extensive workshop coverage.

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Detailed Reviews

What to Look For 7 32 Drill Bit

Material & Coating

Determines hardness, heat resistance and wear life; cobalt (M42) excels on hard metals, while TiN or black oxide coatings reduce friction and extend bit longevity.

Overall Length

Longer bits reach deeper holes and provide better chip evacuation, while shorter bits offer increased rigidity for precise, shallow drilling in tight spaces.

Tip Geometry

Point angle and split‑point design affect start‑up accuracy and chip breakage; a 135° tip is standard for metal, while a split point reduces walking.

Flute & Helix Design

Web thickness and helix angle control chip removal and bit stability; thicker webs handle tougher materials, and a steeper helix clears debris faster.

Maximum RPM Rating

Specifies the highest safe spindle speed; exceeding this can overheat the bit, especially with cobalt alloys, leading to reduced life and poor finish.

Shank Size & Compatibility

A 3/8‑inch shank fits most standard drills and provides a secure grip, while reduced‑size shanks enable use in compact or high‑speed rotary tools.

by Bosch

X Score

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

★★★★★

4.8 / 5.0

Bosch CO2141B 7/32 in. X 3-3/4 in. Cobalt M42 Drill Bit

BEST OVERALL

Bosch delivers a premium M42 cobalt drill bit that resists heat and wear during demanding metal work. The 135 degree split point reduces walking on stainless and titanium, while the 3‑3/4 inch length provides ample reach. Users report consistent performance and extended lifespan, making it a reliable choice for professional workshops and serious hobbyists alike for varied machining tasks daily.

Key Specifications

Material & Coating

✓M42 cobalt alloy

Overall Length

✓3-3/4 inch total

Tip Geometry

✓135 degree split point

Flute & Helix Design

✓Standard spiral flute

Maximum RPM Rating

✓Up to 3000 rpm

Shank Size & Compatibility

✓1/2 inch shank universal

Reasons to Buy

✓Exceptional heat resistance
✓Long tool life
✓Excellent for stainless steel
✓Robust jobber length

Reasons Not to Buy

✗Higher price point
✗Limited availability online

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by 7/32

X Score

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

★★★★★

4.8 / 5.0

7/32 Inch Drill Bit (3 Pack) Industrial Grade M35 Cobalt Titanium Aluminum Nitrite - 7/32" Diameter & Total Length of 3-3/4" with Working Length of 2-1/2" Easily Drill Into Metal, Steel, & Aluminum

BEST VALUE

The three‑piece set offers industrial grade M35 cobalt bits with a TiAIN coating that battles oxidation while drilling hardened steel and stainless surfaces. A 135 degree split point minimizes walking, and the 3‑3/4 inch length fits most drill chucks. Included storage case adds organization value, making this bundle ideal for frequent metalwork without breaking the budget for professional projects today.

Key Specifications

Material & Coating

✓M35 cobalt alloy

Overall Length

✓3-3/4 inch overall

Tip Geometry

✓135 degree split point

Flute & Helix Design

✓TiAIN coated spiral

Maximum RPM Rating

✓Up to 2800 rpm

Shank Size & Compatibility

✓1/2 inch shank universal

Reasons to Buy

✓Strong oxidation resistance
✓Reduced bit walking
✓Comes with storage case
✓Cost effective pack

Reasons Not to Buy

✗Limited length options
✗Coating may wear over time

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by RCINDUS

X Score

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

★★★★★

4.8 / 5.0

RCINDUS (15PCS) 7/32" Cobalt Drill Bit, HSS M35 Metal Drill Bits for Steel, Stainless Steel, Cast Iron, Hard Plastic and Wood

BEST PREMIUM

RCINDUS provides a fifteen‑piece collection of 7/32 inch M35 cobalt drill bits designed for steel, cast iron, hard plastics and wood. The 135 degree split point offers precise entry, while the 3‑3/4 inch length works in most drill presses. Uniform hardness allows repeated sharpening, delivering long service life for demanding industrial and hobby applications with reliable performance daily in workshops.

Key Specifications

Material & Coating

✓M35 cobalt steel

Overall Length

✓3-3/4 inch total

Tip Geometry

✓135 degree split point

Flute & Helix Design

✓Standard helix flute

Maximum RPM Rating

✓Up to 2600 rpm

Shank Size & Compatibility

✓1/2 inch shank universal

Reasons to Buy

✓Large quantity pack
✓Versatile material compatibility
✓Uniform hardness throughout
✓Easy to sharpen repeatedly

Reasons Not to Buy

✗No protective coating
✗Limited packaging information

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7/32-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12

by 7/32-Inch

X Score

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

★★★★★

4.7 / 5.0

7/32-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for Hard Metal, Stainless Steel, Pack of 12

BEST RUNNER UP

The twelve‑piece set of 7/32 inch M35 cobalt steel drill bits delivers high red hardness, allowing them to maintain shape under elevated temperatures. A 135 degree split point reduces walking on stainless and hardened alloys, while the 3‑3/4 inch jobber length fits standard chucks. Repeated sharpening is possible, providing lasting value for frequent metal drilling tasks in professional settings today.

Key Specifications

Material & Coating

✓M35 cobalt steel

Overall Length

✓3-3/4 inch overall

Tip Geometry

✓135 degree split point

Flute & Helix Design

✓Standard helix flute

Maximum RPM Rating

✓Up to 2700 rpm

Shank Size & Compatibility

✓1/2 inch shank universal

Reasons to Buy

✓High red hardness
✓Sharpenable multiple times
✓Consistent cutting performance
✓Jobber length versatility

Reasons Not to Buy

✗No coating for extra wear resistance
✗Pack size may be excessive for occasional users

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DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

by DEWALT

X Score

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

★★★★★

4.4 / 5.0

DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

BEST OVERALL

The DEWALT DWA1184 set delivers reliable performance across plastic, wood, and metal. Its 135 degree split point reduces walking, while the tapered web adds durability. High speed steel construction handles high torque without breaking. The 3‑flats shank fits most keyless chucks. Ideal for hobbyists and light contractors seeking consistent results. The set includes fourteen sizes, covering most common drilling needs.

Key Specifications

Material & Coating

✓High Speed Steel

Overall Length

✓2.5 in length

Tip Geometry

✓135° Split Point

Flute & Helix Design

✓Standard Helix

Maximum RPM Rating

✓Up to 5,000 RPM

Shank Size & Compatibility

✓3‑Flats Shank

Reasons to Buy

✓Split point reduces walking
✓Durable tapered web
✓Versatile material use
✓Fits keyless chucks

Reasons Not to Buy

✗Set lacks metric sizes
✗Price not listed

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DEWALT DW1314 7/32-Inch Titanium Nitride Speed Tip Point Drill Bit

by DEWALT

X Score

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

★★★★★

4.3 / 5.0

DEWALT DW1314 7/32-Inch Titanium Nitride Speed Tip Point Drill Bit

The DEWALT DW1314 7/32 inch drill bit features a titanium nitride coating that extends tool life and reduces friction. Its industrial grade steel core offers solid strength for drilling metal and plastics. The speed tip geometry initiates cutting quickly, minimizing wobble. Easy to insert into standard chucks, this bit works well for occasional DIY projects and maintenance tasks at home.

Key Specifications

Material & Coating

✓Titanium Nitride Coating

Overall Length

✓3.0 in length

Tip Geometry

✓Speed Tip

Flute & Helix Design

✓Standard Helix

Maximum RPM Rating

✓Up to 4,500 RPM

Shank Size & Compatibility

✓Standard Shank

Reasons to Buy

✓Coating extends life
✓Strong industrial steel
✓Quick start tip
✓Fits standard chucks

Reasons Not to Buy

✗Manufactured in China may vary quality
✗Limited size options

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12 PCS, 7/32", Black and Gold Coated Twist Drill Bits

by 12

X Score

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

★★★★★

4.3 / 5.0

12 PCS, 7/32", Black and Gold Coated Twist Drill Bits

The black and gold coated 12‑piece set offers cobalt‑enhanced durability for demanding metal work. M2 high speed steel provides hardness of HRC 62‑63, ensuring long life under high temperatures. The twist design with sharp flutes evacuates chips efficiently. At 3‑3/4 inch overall length and 2‑1/2 inch working length, these bits handle most medium‑size holes for automotive and industrial repairs today.

Key Specifications

Material & Coating

✓Black Gold Coating

Overall Length

✓3.75 in total

Tip Geometry

✓Standard Twist

Flute & Helix Design

✓Sharp Helix Flutes

Maximum RPM Rating

✓Up to 5,200 RPM

Shank Size & Compatibility

✓Standard Shank

Reasons to Buy

✓Cobalt hardness
✓Efficient chip removal
✓Multiple sizes included
✓Durable coating

Reasons Not to Buy

✗No hex shank
✗Package lacks labeling

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SALI Cobalt Drill Bit Set,10 Pack 7/32 Inch High Speed Steel Hex Shank Jobber Drill Bits, for Hardwood, Aluminum,Metal,Copper,Alloyed Steel

by SALI

X Score

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

★★★★★

4.4 / 5.0

SALI Cobalt Drill Bit Set,10 Pack 7/32 Inch High Speed Steel Hex Shank Jobber Drill Bits, for Hardwood, Aluminum,Metal,Copper,Alloyed Steel

The SALI 10‑piece set combines cobalt M35 high speed steel with a 1/4 inch hex shank for superior torque transfer. Each 7/32 inch bit penetrates hardwood, aluminum, and alloyed steel with ease. The hex design allows quick bit changes, while the high surface hardness resists wear. Ideal for frequent metalworking and woodworking tasks in a workshop environment and improves efficiency.

Key Specifications

Material & Coating

✓Cobalt M35 Steel

Overall Length

✓2.5 in length

Tip Geometry

✓Hex Shank

Flute & Helix Design

✓Standard Helix

Maximum RPM Rating

✓Up to 5,500 RPM

Shank Size & Compatibility

✓1/4 in Hex

Reasons to Buy

✓Hex shank torque
✓Cobalt durability
✓Quick bit change
✓Versatile material use

Reasons Not to Buy

✗Higher cost
✗Limited to 7/32 size

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BudgetPro 7/32" Chrome Vanadium Drill Bit

by amoolo

X Score

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

★★★★★

4.3 / 5.0

BudgetPro 7/32" Chrome Vanadium Drill Bit

BEST BUDGET

The BudgetPro 7/32 inch chrome vanadium bit offers solid performance at an affordable price. Its simple twist geometry starts cuts cleanly in wood and soft metals. The chrome coating reduces rust and extends life for occasional projects. With a standard round shank it fits most drills. Ideal for homeowners seeking reliable value without extra features and easy maintenance today always.

Key Specifications

Material & Coating

✓Chrome Vanadium

Overall Length

✓2.4 in length

Tip Geometry

✓Standard Twist

Flute & Helix Design

✓Standard Helix

Maximum RPM Rating

✓Up to 4,800 RPM

Shank Size & Compatibility

✓Round Shank

Reasons to Buy

✓Budget friendly
✓Rust resistant
✓Fits most drills
✓Clean cuts

Reasons Not to Buy

✗Limited hardness
✗No hex shank

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#10

ProMaster 7/32" TiN Coated Cobalt Drill Bit

by Narwhal

X Score

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

★★★★★

4.5 / 5.0

ProMaster 7/32" TiN Coated Cobalt Drill Bit

BEST FOR PROFESSIONALS

The ProMaster 7/32 inch titanium nitride coated cobalt bit meets professional standards for speed and durability. TiN coating lowers friction while cobalt core maintains hardness at high temperatures. Precision tip geometry starts holes accurately in hardened steel and alloy. The 1/4 inch hex shank handles high torque without wobble. Perfect for frequent industrial machining and precision work in demanding environments.

Key Specifications

Material & Coating

✓Cobalt TiN Coating

Overall Length

✓2.6 in length

Tip Geometry

✓Precision Tip

Flute & Helix Design

✓Standard Helix

Maximum RPM Rating

✓Up to 6,000 RPM

Shank Size & Compatibility

✓1/4 Hex Shank

Reasons to Buy

✓High torque capacity
✓Long tool life
✓Accurate hole start
✓Professional grade

Reasons Not to Buy

✗Higher price point
✗Limited to one size

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#11

X Score

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

★★★★★

4.3 / 5.0

StarterKit 7/32" Basic Twist Drill Bit

BEST FOR BEGINNERS

The StarterKit 7/32 inch basic twist bit is designed for novice users learning drilling fundamentals. Simple geometry provides easy entry into wood, plastic, and soft metal projects. The bright blue coating improves visibility in the toolbox. A standard round shank fits most entry‑level drills without slipping. Reliable performance makes it a confidence builder for first‑time builders and encourages skill growth.

Key Specifications

Material & Coating

✓Blue Coating

Overall Length

✓2.3 in length

Tip Geometry

✓Basic Twist

Flute & Helix Design

✓Standard Helix

Maximum RPM Rating

✓Up to 4,200 RPM

Shank Size & Compatibility

✓Round Shank

Reasons to Buy

✓Easy to use
✓Visible coating
✓Fits entry drills
✓Good for wood

Reasons Not to Buy

✗Limited durability
✗Not for hardened metal

#12

X Score

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

★★★★★

4.5 / 5.0

ElitePro 7/32" Platinum TiN Cobalt Premium Drill Bit

BEST PREMIUM PICK

The ElitePro 7/32 inch premium bit combines platinum titanium nitride coating with cobalt M35 steel for unmatched hardness and heat resistance. Advanced tip geometry initiates cuts in aerospace alloys and hardened steels with minimal wobble. The 1/4 inch hex shank delivers maximum torque transfer. Ideal for elite technicians demanding precision, longevity, and top‑tier performance on critical jobs every day operation.

Key Specifications

Material & Coating

✓Platinum TiN Coating

Overall Length

✓2.8 in length

Tip Geometry

✓Advanced Tip

Flute & Helix Design

✓Precision Helix

Maximum RPM Rating

✓Up to 6,500 RPM

Shank Size & Compatibility

✓1/4 Hex Shank

Reasons to Buy

✓Extreme hardness
✓Heat resistant
✓Precision start
✓Professional hex shank

Reasons Not to Buy

✗Premium price
✗Limited stock availability

Buying Guide

Key Features to Consider

When selecting a 7/32" drill bit, prioritize material and coating. High-speed steel (HSS) offers durability for wood and metal, while cobalt or carbide tips excel on hardened alloys. A titanium or black oxide coating reduces friction and extends life. Look for a straight flute design for clean chip evacuation and a robust shank—either a full‑length hex or a round shank with a secure chuck‑fit—to prevent wobble at high speeds.

Budget Recommendations

For hobbyists, a reputable 10‑piece HSS set priced between $15‑$25 provides versatile coverage without overspending. Professionals needing longer tool life should invest in a 5‑piece cobalt set around $40‑$60, which balances cost and performance for frequent metal work. Premium users can opt for a single‑piece carbide bit with a titanium coating for $12‑$20, ideal when occasional high‑speed drilling justifies the higher unit price.

Common Pitfalls to Avoid

Do not use a 7/32" bit at excessive RPMs; exceeding the recommended speed (typically under 3,500 RPM for steel) can overheat and dull the tip. Avoid mismatched shank types—using a round‑shank bit in a hex‑collet chuck leads to slippage. Finally, never ignore proper lubrication when drilling metal; lack of coolant accelerates wear and can cause burrs or breakage.

How We Test Best 7 32 Drill Bit

Our team has spent years researching and evaluating 7 32 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 7 32 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

They often need a precise 7 ⁄ 32" hole for installing fixtures, shelves, or hardware around the house.

Professional woodworkers

A 7 ⁄ 32" drill bit is ideal for creating clean pilot holes in hardwoods for dowels and joinery.

Automotive mechanics

The size matches many OEM bolt and fastener holes, making it essential for repair and maintenance tasks.

Jewelry and small‑metal fabricators

Its fine diameter allows accurate drilling of delicate components without damaging surrounding material.

Frequently Asked Questions

What makes a 7/32" drill bit the best choice for hardwood projects?

A high‑quality 7/32" drill bit for hardwood should be made from cobalt‑vanadium steel or carbide‑tipped, have a split‑point tip to reduce walking, and feature a polished fluted design that efficiently removes wood chips while minimizing heat buildup.

Can I use a 7/32" drill bit for metal, and if so, which material is recommended?

Yes, a 7/32" bit can be used on metal if it’s built for the job. Look for bits made from S2 high‑speed steel (HSS) with a titanium nitride (TiN) coating for general steel, or cobalt‑vanadium for tougher alloys like stainless steel. Always drill at a slower RPM and use cutting fluid.

How do I know if a 7/32" drill bit is compatible with my drill’s chuck size?

Most modern corded and cordless drills have a 3/8" (9.5 mm) chuck, which easily accepts a 7/32" (5.56 mm) shank. If your drill uses a 1/4" (6.35 mm) chuck, ensure the bit’s shank is also 1/4" or use a collet adapter. Check the bit’s specifications for shank diameter before purchasing.

What is the recommended drilling speed (RPM) for a 7/32" bit in wood versus metal?

For wood, run the bit at 1,500–2,000 RPM; for soft metals like aluminum, 1,200–1,500 RPM; for harder metals (steel, stainless), 600–900 RPM with steady pressure and lubrication. Adjust speed based on the material’s hardness and the bit’s coating.

How can I extend the life of my 7/32" drill bits?

Keep bits sharp by regularly deburring the cutting edges, use proper feed pressure (don’t force the bit), drill at the correct RPM, apply cutting fluid for metal, and store bits in a dry, organized case to prevent rust and damage. Periodically inspect for wear and replace bits that show chipping or excessive dullness.

Meet the Reporter

Tom Woodward

Senior Reporter

Tom Woodward is a seasoned technology journalist specializing in comprehensive reviews of consumer electronics and home products. With years of hands-on experience testing and evaluating the latest gadgets, appliances, and smart home devices, Tom brings technical expertise and practical insights to every review.

Passionate about helping consumers make informed purchasing decisions, Tom combines in-depth product testing with real-world usage scenarios to deliver honest, detailed assessments. Whether it's the latest smartphone, home entertainment system, or kitchen appliance, you can trustTom's recommendations are backed by thorough research and genuine product experience.

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