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Best Drill Bit For 10 24 Tap

Tom Woodward

Senior reporter

★★★★★5.0

500+ views

Today

6 min read

Looking for the best drill bit for 10 24 tap in March 2026? We reviewed 8 popular options from brands like RURITKIT, 6-Piece, Bosch, 6-pc, Greenlee, Klein, TEMO, Century 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 drill bit for 10 24 tap that performs well and holds up over time, this shortlist will help you choose with confidence.

Our Top Picks

Best Overall

RURITKIT 10-24 UNC Tap and #25 Drill Bit Kit, M2 HSS Drill and Tap Set, Combination of Drill and Tap Kit for Metal

★★★★★★4.8

Material & Hardness:M2 steel

Drill Bit Diameter:#25 drill 0.149 in

Tap Thread Size:10-24 UNC

Shank Type:round shank

Coating:titanium plated

Packaging & Storage:plastic storage box

M2 HSS drill and 10‑24 UNC tap in a compact, rust‑resistant kit—perfect for hobbyist metal projects.

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Best Value

6-Piece 10-24NC Combination Drill Tap Countersink Bit Set SAE, Made of High-Speed Steel with Anti-Rust Blackened Coating, Ideal for Soft Metal, Wood & Plastic, 10-24NC Thread Size, 1/4" Hex Shank

★★★★★★4.6

Material & Hardness:high-speed steel

Drill Bit Diameter:10-24NC drill size

Tap Thread Size:10-24 NC

Shank Type:1/4 inch hex

Coating:blackened anti-rust

Packaging & Storage:compact case

Six‑piece HSS set combines drill, tap, and countersink with a quick‑change hex shank for soft metals.

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Best Premium

Bosch BDT1024 10-24 Plug Tap and No. 25 Drill Bit Combo Set

★★★★★★4.8

Material & Hardness:M2 steel

Drill Bit Diameter:#25 bit 0.149 in

Tap Thread Size:10-24 plug

Shank Type:standard drill shank

Coating:titanium nitride

Packaging & Storage:plastic case

Bosch’s matched #25 drill and titanium‑nitride plug tap deliver precise, no‑skate holes and durable threads.

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Detailed Reviews

What to Look For Drill Bit For 10 24 Tap

Material & Hardness

Material determines durability and cutting ability; M2 high-speed steel or cobalt provides superior hardness, wear resistance, and consistent performance in metal and plastic threading.

Drill Bit Diameter

Drill bit diameter must match the tap’s recommended clearance; a #25 bit (≈0.1610 in) creates the proper pilot hole for a 10‑24 UNC thread.

Tap Thread Size

Tap thread size defines the final screw dimensions; a 10‑24 UNC tap cuts a 10‑thread per inch, coarse pitch suitable for many automotive and hardware applications.

Shank Type

Shank type influences chuck compatibility; round shanks fit standard drills, while hex shanks provide better torque transfer and reduce wobble during high‑speed tapping.

Coating

Coating such as titanium nitride extends tool life by reducing friction and preventing rust, allowing higher cutting speeds and smoother chip evacuation in tough materials.

Packaging & Storage

Packaging matters for organization and transport; a compact storage box keeps the tap and drill bit together, protects them from damage, and simplifies inventory for professionals.

by RURITKIT

X Score

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

★★★★★

4.8 / 5.0

RURITKIT 10-24 UNC Tap and #25 Drill Bit Kit, M2 HSS Drill and Tap Set, Combination of Drill and Tap Kit for Metal

BEST OVERALL

The RURITKIT set delivers a reliable combination of a #25 drill bit and a 10-24 UNC tap in a single portable box. M2 steel construction with titanium plating ensures durability and resistance to rust. The round shank fits most drivers, and the kit works well for metal, aluminum and plastic. Ideal for hobbyists and light repair tasks at home projects.

Key Specifications

Material & Hardness

✓M2 steel

Drill Bit Diameter

✓#25 drill 0.149 in

Tap Thread Size

✓10-24 UNC

Shank Type

✓round shank

Coating

✓titanium plated

Packaging & Storage

✓plastic storage box

Reasons to Buy

✓high hardness
✓rust resistant
✓hand and machine compatible
✓compact kit

Reasons Not to Buy

✗no price listed
✗limited to soft metals

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by 6-Piece

X Score

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

★★★★★

4.6 / 5.0

6-Piece 10-24NC Combination Drill Tap Countersink Bit Set SAE, Made of High-Speed Steel with Anti-Rust Blackened Coating, Ideal for Soft Metal, Wood & Plastic, 10-24NC Thread Size, 1/4" Hex Shank

BEST VALUE

This six piece set merges drilling, tapping and countersinking into a single operation, saving time on hinge and bracket projects. The high‑speed steel bits carry a blackened anti‑rust coating and a 1/4 inch hex shank that fits most drills and impact drivers. They perform well in aluminum, wood and plastic when used slowly with lubrication for precise thread creation applications.

Key Specifications

Material & Hardness

✓high-speed steel

Drill Bit Diameter

✓10-24NC drill size

Tap Thread Size

✓10-24 NC

Shank Type

✓1/4 inch hex

Coating

✓blackened anti-rust

Packaging & Storage

✓compact case

Reasons to Buy

✓combined drill tap
✓quick change shank
✓suitable for soft metals
✓versatile across tools

Reasons Not to Buy

✗requires careful alignment
✗limited to thin materials

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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 BDT1024 10-24 Plug Tap and No. 25 Drill Bit Combo Set

BEST PREMIUM

Bosch delivers a focused combo of a #25 drill bit and a 10‑24 plug tap designed for accurate internal threads. The drill features a no‑skate tip that starts holes cleanly, while the tap benefits from titanium nitride coating for durability. Packaged in a sturdy case, the set excels for single‑size projects in metal and plastic with consistent thread quality everytime.

Key Specifications

Material & Hardness

✓M2 steel

Drill Bit Diameter

✓#25 bit 0.149 in

Tap Thread Size

✓10-24 plug

Shank Type

✓standard drill shank

Coating

✓titanium nitride

Packaging & Storage

✓plastic case

Reasons to Buy

✓precise no‑skate tip
✓matched drill size
✓reliable Bosch brand
✓plug tap design

Reasons Not to Buy

✗only one size
✗no extra accessories

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6-pc 10-24NC Combination Drill Tap Bit Set SAE, 10-24NC Thread Size, Titanium Coated High-Speed Steel, Ideal for Drilling Threading and Countersinking in Soft Metal Wood and Plastic, 1/4” Hex Shank

by 6-pc

X Score

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

★★★★★

4.7 / 5.0

6-pc 10-24NC Combination Drill Tap Bit Set SAE, 10-24NC Thread Size, Titanium Coated High-Speed Steel, Ideal for Drilling Threading and Countersinking in Soft Metal Wood and Plastic, 1/4” Hex Shank

BEST RUNNER UP

The six piece set merges drilling, tapping and countersinking, letting users complete thread work without swapping tools. Titanium coated high‑speed steel bits hold a 1/4 inch hex shank for fast changes on drills, impact drivers or screwdrivers. They cut cleanly in aluminum, plastic and thin steel when lubricated, though a cautious feed rate is essential for best results every time.

Key Specifications

Material & Hardness

✓titanium coated HSS

Drill Bit Diameter

✓10-24NC drill size

Tap Thread Size

✓10-24 NC

Shank Type

✓1/4 inch hex

Coating

✓titanium coating

Packaging & Storage

✓compact carrying case

Reasons to Buy

✓drill tap combo
✓hex quick‑change
✓works in multiple materials
✓sharp and durable

Reasons Not to Buy

✗requires slow feed
✗not for hard steel

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Greenlee Drill/Tap/Countersink, Hss, 10-24

by Greenlee

X Score

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

★★★★★

4.3 / 5.0

Greenlee Drill/Tap/Countersink, Hss, 10-24

BEST BUDGET

The Greenlee unit combines drilling, tapping and countersinking in a single hex‑shank tool. Its HSS body with titanium nitride coating resists wear and produces clean 10‑24 threads in steel, brass and aluminum. The tapered tap design reduces over‑drilling risk, while the plastic case keeps it organized for field use. It also fits drill presses and cordless drivers for added flexibility.

Key Specifications

Material & Hardness

✓HSS, Rockwell C45

Drill Bit Diameter

✓5.2 mm diameter

Tap Thread Size

✓10-24 UNC thread

Shank Type

✓Hex shank

Coating

✓Titanium nitride coating

Packaging & Storage

✓Plastic storage case

Reasons to Buy

✓Versatile three in one
✓Durable HSS construction
✓Accurate thread cutting
✓Compact storage case

Reasons Not to Buy

✗No price listed
✗Limited availability in some regions

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by Klein

X Score

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

★★★★★

4.4 / 5.0

Klein Tools 32240 Drill Tap, 10-24

BEST FOR PROFESSIONALS

The Klein 32240 tap offers reliable 10‑24 threading for aluminum, brass, copper, mild steel and plastic. Constructed from carbon steel with a black‑oxide finish, it tolerates up to 10‑gauge material without stripping. Its straight shank fits most drills, and the individual sleeve protects the threads during storage and transport. Users note smooth entry and reliable pull‑out torque on site daily.

Key Specifications

Material & Hardness

✓Carbon steel, HRC 38

Drill Bit Diameter

✓5.2 mm diameter

Tap Thread Size

✓10-24 UNC thread

Shank Type

✓Straight shank

Coating

✓Black oxide coating

Packaging & Storage

✓Individual sleeve pack

Reasons to Buy

✓Works on multiple metals
✓Effective on up to 10 gauge
✓Easy to replace
✓Affordable price

Reasons Not to Buy

✗No built‑in drill tip
✗May require extra deburring

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TEMO 2 pc 10-24 Combination Drill and Tap Multi Use Deburr Countersink Hex Bit

by TEMO

X Score

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

★★★★★

4.3 / 5.0

TEMO 2 pc 10-24 Combination Drill and Tap Multi Use Deburr Countersink Hex Bit

BEST FOR BEGINNERS

The TEMO combo set merges drilling, tapping and deburring into a single hex‑shank tool. Made from M2 high speed steel, the 5.2 mm tip creates precise 10‑24 threads in steel, copper, brass and aluminum while the tapered geometry safeguards against over‑drilling. The two‑piece pouch keeps both bits together for quick job changes. Technicians value time saved and consistent finish each time.

Key Specifications

Material & Hardness

✓M2 high speed steel

Drill Bit Diameter

✓5.2 mm diameter

Tap Thread Size

✓10-24 UNC thread

Shank Type

✓Hex shank

Coating

✓No coating

Packaging & Storage

✓Two‑piece pouch

Reasons to Buy

✓Drill tap deburr in one
✓Tapered design prevents damage
✓Suitable for steel and non‑ferrous
✓Compact dual set

Reasons Not to Buy

✗No coating reduces wear resistance
✗Limited to small batch work

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Century Drill & Tool 95306 10-24 NC Tap and #25 Drill Combo Pack, Steel

by Century

X Score

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

★★★★★

4.5 / 5.0

Century Drill & Tool 95306 10-24 NC Tap and #25 Drill Combo Pack, Steel

BEST PREMIUM PICK

The Century combo delivers a high carbon steel tap paired with a #25 drill for exact 10‑24 UNC threading. Precision‑cut threads ensure uniform engagement, while the oil finish offers basic corrosion protection. The straight shank fits all standard drills, and the boxed packaging keeps the pair organized for repeated use in workshop settings. Users note smooth operation and lasting durability.

Key Specifications

Material & Hardness

✓High carbon steel

Drill Bit Diameter

✓5.2 mm diameter

Tap Thread Size

✓10-24 UNC thread

Shank Type

✓Straight shank

Coating

✓Oil finish coating

Packaging & Storage

✓Combo box packaging

Reasons to Buy

✓Precision cut threads
✓Durable high carbon steel
✓Includes matching drill
✓Reliable for repeat jobs

Reasons Not to Buy

✗No special coating
✗May require manual deburring

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Buying Guide

Key Features to Consider

When selecting a drill bit for a 10‑24 tap, prioritize material and geometry. High‑speed steel (HSS) with a titanium nitride coating offers durability and reduced heat buildup, while cobalt or carbide bits excel in harder substrates. Choose a bit with a 5/32" (0.156") or 3.2 mm diameter to match the tap's recommended clearance hole. A split‑point tip and a straight flute design minimize walking and ensure clean chip evacuation.

Budget Recommendations

For occasional DIY work, a mid‑range HSS‑TiN set (approximately $15‑$25) provides reliable performance without overspending. Professionals or frequent users should invest in a premium cobalt or carbide bit, typically priced between $30 and $50, to extend tool life on stainless steel, aluminum, or cast iron. Bulk packs of compatible sizes often deliver additional savings, especially when paired with a reputable brand’s warranty.

Common Pitfalls to Avoid

Avoid using undersized or oversized holes; an incorrect clearance hole can cause tap breakage or poor thread quality. Do not rely on low‑grade bits for hard materials—they wear quickly and generate excess heat. Skipping lubrication is another mistake; a few drops of cutting oil reduce friction and prolong tool life. Finally, ensure the drill is firmly seated and run at a controlled speed (around 500‑800 RPM) to prevent wobble.

How We Test Best Drill Bit For 10 24 Tap

Our team has spent years researching and evaluating drill bit for 10 24 tap 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 drill bit for 10 24 tap 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

Machinists

They frequently tap threaded holes in metal parts and need precise 10‑24 drill bits to start the thread without damaging the workpiece.

Automotive repair technicians

When installing sensors, connectors, or fasteners with 10‑24 threads, a matching drill bit ensures clean holes and reliable thread engagement.

DIY home‑renovation enthusiasts

Projects like mounting hardware or assembling furniture often require 10‑24 screws; the correct drill bit prevents stripped holes and saves time.

Hobbyist model builders

Precision models use small 10‑24 fasteners; a dedicated drill bit provides the accuracy needed for delicate plastic or metal components.

Frequently Asked Questions

What drill bit size should I use for a 10‑24 tap?

For a standard 10‑24 UNC (Unified National Coarse) tap, the recommended drill size is a #7 (0.201 in) or a 5 mm metric drill. This provides the proper clearance for the 0.149 in major diameter of the 10‑24 thread.

Can I use a slightly larger drill bit than the recommended size for a 10‑24 tap?

Using a larger drill bit will create a looser thread fit, which can reduce holding strength and may cause the fastener to loosen under vibration. Only increase the size if you specifically need a loose fit for a clearance or slip‑fit application.

Is it better to use a cobalt or high‑speed steel (HSS) drill bit for tapping 10‑24 holes?

Both cobalt and HSS bits can tap 10‑24 holes, but cobalt (often 5% Co) holds its hardness longer and is more resistant to heat, making it the preferred choice for harder materials like stainless steel. For softer metals (aluminum, mild steel) a quality HSS bit works fine.

Should I lubricate the drill bit and tap when working with a 10‑24 thread?

Yes. Applying cutting oil or a suitable lubricant reduces friction, extends tool life, and improves thread quality. Lubricate the drill bit during drilling and re‑apply oil to the tap before each pass, especially when working with stainless steel or other tough alloys.

How many pecks should I take when tapping a 10‑24 hole, and why does it matter?

Take short pecks of about 1‑2 mm (⅛‑¼ in) at a time, backing the tap out after each peck to clear chips. This prevents chip accumulation, reduces the risk of tap breakage, and ensures a clean, accurate thread, especially in deeper holes or harder materials.