Best Clock Keys of 2026

Harry Stack Avatar
Harry Stack
Last Updated: Jan 10, 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Clock keys are essential tools for those who own antique or vintage clocks. These keys come in various sizes and shapes to fit different types of clocks. They are used to wind the clock's mainspring, which stores energy to power the clock's movement. Clock keys are made of durable materials such as brass or steel to ensure longevity and reliability. They are easy to use and can be stored in a safe place when not in use. Clock keys are a must-have for clock enthusiasts who want to keep their timepieces running smoothly for years to come.

At a Glance: Our Top Picks

Brass Blessing Clock Winding Key Cover #TOP 1
Brass Blessing Clock Winding Key
ftb score rating icon 9.8
Brass Blessing: 5 Prong Clock Key with Odd Numbers (5023) Cover #TOP 2
Brass Blessing: 5 Prong Clock Key with Odd Numbers (5023)
ftb score rating icon 9.7
TAURISH 2-Piece Brass Clock Key Set Cover #TOP 3
TAURISH 2-Piece Brass Clock Key Set
ftb score rating icon 9.5

Top 10 Clock Keys

#TOP 1

Brass Blessing Clock Winding Key

Brass Blessing
Natural
BRASS GOLD
Brass Blessing Clock Winding Key Cover
Brass Blessing Clock Winding Key - 5024

Brass Blessing Key Set is a collection of EVEN SIZE CLOCK WINDING KEYS made fully of brass. The set includes five keys in sizes: 2.75mm, 3.25mm, 3.75mm, 4.25mm, and 4.75mm. These keys are essential for winding various types of clocks. The brass material ensures durability and longevity. The even sizes cater to different clock mechanisms, providing versatility for users. With this key set, you can easily wind your clocks and keep them running smoothly.

What We Like
Durable Brass Material
Versatile Key Sizes
Easy Clock Winding
#TOP 2

Brass Blessing: 5 Prong Clock Key with Odd Numbers (5023)

1Odd
BRASS GOLD
Brass Blessing: 5 Prong Clock Key with Odd Numbers (5023) Cover
Brass Blessing : 5 Prong Brass Clock Key for Winding Clocks, ODD Numbers, 1 Piece (5023)

The Brass Blessing clock key is a universal brass key with 5 prongs specifically designed for winding clocks. This key has odd numbered sizes ranging from 3mm to 5mm. These sizes are 3mm - 1/8 in (3), 3.5mm - 9/64 in (5), 4mm - 5/32 in (7), 4.5mm - 0.174 in (9), and 5mm - 13/64 in (11). With its universal design and variety of sizes, it is easy to find the right size to wind your clock.

What We Like
Universal brass key with 5 prongs suitable for winding clocks
Includes odd numbered sizes from 3mm to 5mm
Easy to use and find the right size to wind your clock
#TOP 3

TAURISH 2-Piece Brass Clock Key Set

Brass Clock Winding Key
Brass Gold
TAURISH 2-Piece Brass Clock Key Set Cover
2 Pieces 5-in-1 Odd/Even Number Brass Clock Winding Key

The TAURISH Clock Key Set includes two brass keys designed for winding clocks. With both odd and even prongs available in various sizes, you can easily find the right fit for your clock. The odd sizes range from 3 to 11, while the even sizes go from 2 to 10. This universal application makes it convenient for you to use these keys on a wide range of clocks, ensuring you can keep your timepieces running smoothly. The durable brass construction also adds to their longevity, making this set a reliable addition to your clock maintenance toolkit.

What We Like
Universal compatibility
Durable brass material
Multiple size options
Convenient for clock maintenance
#TOP 4

NATIKON Grandfather Clock Winding Key

ntkn01
Brass
NATIKON Grandfather Clock Winding Key Cover
Grandfather Clock Winding Key Crank Winder Sligh Ridgeway Pearl

The NATIKON Clock Key is designed to fit modern grandfather clock movements from well-known makers like Kieninger, Urgos, and Hermle. This means it works with most contemporary grandfather clocks, making it a handy tool for keeping your clock running smoothly. The key features a sturdy brass shaft combined with a comfortable wooden handle, giving you a reliable grip and durability when winding your clock. With a 4mm size dimension, it fits the winding points precisely, ensuring easy and efficient use. If you need a dependable and easy-to-use key for your modern grandfather clock, the NATIKON Clock Key is a great choice.

What We Like
Compatible with major clock brands
Durable brass shaft
Comfortable wooden handle
Precise 4mm size
#TOP 5

FELHOOD Grandfather Clock Door Key

Grandfather Clock Door Key
Gold
Small
FELHOOD Grandfather Clock Door Key Cover
FELHOOD Grandfather Clock Door Key for Most Clocks Prior to 2004, Compatible with Ridgeway, Sligh, Emporer, Pearl, Seth Thomas, Trend Grandfather Clock - 1 Pack

This brass finish key fits most modern grandfather clock parts like Ridgeway 1985 Grandfather Clock and is compatible with 95% of grandfather clocks before 2004. The overall length is 3 3/16", shaft length is 1 1/2", the bit is 3/16" wide and 3/16" tall, and the inner barrel diameter is 1/8".

What We Like
Compatible with 95% of grandfather clocks prior to 2004
Brass finish adds an elegant touch
Overall length, shaft length, bit size, and inner barrel diameter are specified for easy measurement comparison
#TOP 6

RO6G Brass Grandfather Clock Door Key

Gold
Small
RO6G Brass Grandfather Clock Door Key Cover
Grandfather Clock Door Key Replacement Ridgeway Grandfather, Sligh, Pearl, Seth, Thomas, Howard Miller Grandfather Clock Key Suitable for Before 2004 Door Clock Key

The RO6G Grandfather Clock Key is a versatile replacement key designed to fit many well-known grandfather clock brands like Howard Miller, Ridgeway, and Sligh. If your current clock key is worn out or doesn’t fit well, this key offers a reliable solution to keep your clock door secure and functional. Made from solid brass with a polished finish, it ensures long-lasting durability and a classic look. Its standard size makes it easy to use—you simply insert it into your clock’s door lock and turn to open or close the door smoothly. This key is a practical and durable choice to maintain your cherished clock’s elegance and function.

What We Like
Wide brand compatibility
Durable solid brass material
Standard size fits most clocks
Easy to operate
#TOP 7

TAURISH Double End Clock Winding Key Size 6 & 00000

AS-DCK-6/00000
Brass Finish
TAURISH Double End Clock Winding Key Size 6 & 00000 Cover
TAURISH American Standard Double End Clock Winding Key - Size 6 & 00000 (3.6mm and 1.6mm) Universal Brass Double End Clock Winding Tool for Mantel, Bracket, and Antique Clocks

The TAURISH Double End Key is a versatile tool designed to help you easily wind and adjust your clocks. With two different sizes on each end—one for winding the mainspring and the other for fine-tuning the time—you get convenience in one compact tool. Its universal design fits most American mantel, wall, and bracket clocks, so you won’t need multiple keys. Made from solid brass, this key offers durability and resists corrosion, ensuring it lasts through daily or occasional use. The precise square holes grip the clock arbors securely, giving you smooth and reliable winding every time.

What We Like
Double end sizes
Universal clock fit
Precise square holes
Durable brass build
#TOP 8

TAURISH Brass 5-Prong Clock Winding Key Set

TK-5PEV-2025
Brass
Medium
TAURISH Brass 5-Prong Clock Winding Key Set Cover
TAURISH Universal Vintage Clock Winding Key 5 Prong Even Numbers 2 to 10 Brass Clock Key for Winding Clocks

The TAURISH Clock Winding Key is designed to fit a variety of clocks with its five-prong design, making it a versatile tool for your winding needs. It comes in five even-numbered sizes, so you can easily find the right fit for your clock without hassle. Crafted from durable brass, this key not only lasts long but also offers a classic vintage look that complements antique timepieces. Whether you’re winding a grandfather clock or other mechanical clocks, this key provides a reliable and convenient solution to keep your clocks running smoothly.

What We Like
Multiple even-numbered sizes
Universal five-prong fit
Durable brass material
Suitable for antique clocks
#TOP 9

La Macaza 18-Piece Universal Skeleton Key Set

LM-SK
‎Zinc Alloy
La Macaza 18-Piece Universal Skeleton Key Set Cover
Skeleton Key Set, 18 Keys Universal Skeleton Keys Replacement for Vintage Old Furniture, Antique Furniture, Cabinet Doors, Grandfather Clocks, Old Style Cabinets or Doors(18)

The La Macaza Skeleton Key Set offers 18 commonly used keys designed to fit many traditional locks, making it easier for you to unlock vintage furniture and cabinets without hassle. Made from high-quality zinc alloy, these keys resist rust and wear, ensuring they stay strong and reliable over time. Their classic design suits a wide range of old furniture pieces like dressers, grandfather clocks, and cupboards, giving you versatile use in your home. Plus, all keys come on a single ring, so you can carry them conveniently and have multiple options ready whenever you need to open different locks.

What We Like
Variety of 18 keys
Durable zinc alloy material
Fits many vintage locks
Compact on single keyring
#TOP 10

La Macaza 12-Piece Universal Skeleton Key Set

LM-SK
‎Zinc Alloy
La Macaza 12-Piece Universal Skeleton Key Set Cover
Skeleton Key Set, 12 Keys Universal Skeleton Keys Replacement for Vintage Old Furniture, Antique Furniture, Cabinet Doors, Grandfather Clocks, Old Style Cabinets or Doors

The La Macaza Skeleton Key Set offers 12 versatile keys designed to fit many traditional locks commonly found on vintage furniture. These keys are crafted from durable zinc alloy, giving you a smooth finish that resists rust and wear, so they stay reliable over time. You can use this set to unlock a variety of old-style cabinets, drawers, clocks, and more, making it a handy tool for restoring or accessing antique pieces. Plus, all the keys come on a single ring, making them easy to carry and organize. This means one set can meet many of your unlocking needs with convenience and durability.

What We Like
Wide compatibility
Durable zinc alloy material
Corrosion resistant finish
Compact key ring set
Buying Guide Image

Basic Information to Help You Figure out the Best Clock Keys

Introduction

Clock keys are an essential tool for anyone who collects or repairs clocks. These small, specialized tools are used to wind the mainspring of a clock, which powers the timepiece. Choosing the right clock key can be a daunting task, especially for those who are new to clock collecting or repair. In this article, we will explore the various factors to consider when selecting a clock key, as well as some tips for using and maintaining this important tool.

Types of Clock Keys

Clock keys come in a variety of shapes and sizes, and the type of key you need will depend on the type of clock you have. The most common types of clock keys are:

  • Barrel keys, which are used to wind clocks with a barrel-shaped mainspring.
  • Lever keys, which are used to wind clocks with a lever-type escapement.
  • Fusee keys, which are used to wind clocks with a fusee-type movement.

There are also keys for specific types of clocks, such as grandfather clocks, cuckoo clocks, and skeleton clocks. It is important to choose the right type of key for your clock, as using the wrong key can damage the movement.

Size and Fit

Once you have determined the type of key you need, the next step is to choose the right size. Clock keys are typically measured in millimeters, and the size of the key is determined by the diameter of the hole in the winding arbor (the part of the movement that the key fits into). Measuring the diameter of the winding arbor with a caliper or a ruler will help you determine the size of key you need.

It is important to choose a key that fits snugly in the winding arbor. A key that is too loose may slip and damage the movement, while a key that is too tight may not fit at all or may require excessive force to insert, which can also damage the movement. If you are unsure of the size of your clock's winding arbor, it is best to consult a clock repair professional or the manufacturer of your clock.

Material and Finish

Clock keys are typically made of brass or steel, and the material you choose will depend on your personal preference and the type of clock you have. Brass keys are generally less expensive and have a softer, warmer tone, while steel keys are more durable and have a sharper, more precise feel.

In terms of finish, clock keys are available in a variety of options, including polished, satin, and antique. Polished keys have a shiny, reflective surface, while satin keys have a matte finish. Antique keys are intentionally aged to give them a vintage look. The finish you choose will depend on your personal taste and the style of your clock.

Additional Features

Some clock keys come with additional features that may be useful depending on your needs. For example, some keys have a T-shaped handle, which provides a more comfortable grip and makes it easier to turn the key. Other keys have a reversible head, which allows you to wind the clock in both directions. Still others have a built-in handle that can be used as a winding crank. Consider what features may be useful to you when choosing a clock key.

Conclusion

In conclusion, choosing the right clock key is an important step in maintaining and repairing your clock. Consider the type, size, material, and finish of the key, as well as any additional features that may be useful to you. With the right clock key in hand, you will be able to keep your clock running smoothly for years to come.

Frequently Asked Questions (FAQs)

1. How do you size a clock key?

Clock keys come in various sizes. To determine the size of the key needed for your clock or watch, measure any edge of the winding square (also known as the "peg") in millimeters and refer to the sizing charts.

2. What are the different types of clock keys?

There are various types of clock keys available, including alarm clock keys, American and Vienna regulator keys, anniversary clock keys, French clock keys, let down and universal keys, among others.

3. What is a clock key for?

A clock key is used to wind a mechanical clock. By measuring the winding arbor (steel shaft the key fits on to) on the back of your clock, you can determine the size of the key required.

4. Can you wind a clock without a key?

If you don't have a clock key, you can use improvised objects like a pen cap, small screwdriver, or paperclip to wind the clock. Choose a tool that fits snugly into the winding arbor and turn it clockwise to wind the clock.

5. Are all grandfather clock keys the same?

No, grandfather clock keys are not the same and do not match any specific grandfather clock. If you lose or misplace a grandfather clock key, you will need to explore other options to unlock the door.

6. What are the 3 key holes on a clock?

On a clock, the middle hole powers the time train for keeping time, the hole on the right powers the quarter-hour chiming, and the hole on the left powers the striking at the top of the hour.

7. What does a grandfather clock key do?

A grandfather clock key is used to wind the 8-day mechanism of the clock. It eliminates the need for batteries in the operation of the clock.

8. Are all clock keys the same?

Clock keys come in different sizes depending on the type of clock movement. Larger German movements usually require a #8 key, while 31-day or Korean/Chinese-made clocks typically use a #6 or #7 key. American-made mantel clocks often use a #5 or #6 key. Tall-case (grandfather) clocks may require a #10 or #11 winding crank instead of a key.

9. What are the 3 key holes on a wind-up clock?

In a wind-up clock, the middle hole winds the spring for timekeeping, the right hole powers the chimes, and the left hole powers the hourly strikes.

Editor's Notes

During our clock key research, we found 24 clock key products and shortlisted 10 quality products. We collected and analyzed 8,124 customer reviews through our big data system to write the clock keys list. We found that most customers choose clock keys with an average price of $13.16.

The clock keys are available for purchase. We have researched hundreds of brands and picked the top brands of clock keys, including Brass Blessing, TAURISH, NATIKON, FELHOOD, RO6G. The seller of top 1 product has received honest feedback from 429 consumers with an average rating of 4.6.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.