Best Hex Nuts of 2025

Brian Howie Avatar
Brian Howie
Last Updated: Jan 2, 2025

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Hex nuts are essential hardware components used in a wide range of applications. These six-sided nuts are designed to be threaded onto bolts or screws to secure them in place. The hexagonal shape provides a sturdy grip, preventing loosening due to vibrations or other external forces. Hex nuts are available in various materials, such as stainless steel, brass, or nylon, offering different levels of strength and corrosion resistance. With their versatility and reliability, hex nuts are a go-to choice for professionals and DIY enthusiasts alike.

At a Glance: Our Top Picks

Hillman 150009 Hex Nuts Cover #TOP 1
Hillman 150009 Hex Nuts
ftb score rating icon 9.8
Mr. Pen Metric Hex Nuts Kit Cover #TOP 2
Mr. Pen Metric Hex Nuts Kit
ftb score rating icon 9.7
Wensilon 1/4-20 Stainless Steel Hex Nuts Cover #TOP 3
Wensilon 1/4-20 Stainless Steel Hex Nuts
ftb score rating icon 9.5

Top 10 Hex Nuts

#TOP 1

Hillman 150009 Hex Nuts

150009
Steel
3/8"-16
Hillman 150009 Hex Nuts Cover
Coarse Thread Hex Nuts 3/8"-16

The Hillman 150009 Hex Nuts are a must-have for any DIY enthusiast or professional. With their zinc coating, these nuts provide a corrosion-resistant finish, ensuring the longevity of your projects. Designed for coarse threaded bolts, these USS coarse nuts offer a secure fit and reliable performance. One of the key benefits of these nuts is their ability to prevent stripping. By avoiding over tightening, you can ensure that your nuts remain intact and functional. Additionally, using nuts that are consistent with your other fasteners improves the overall stability and strength of your projects. Each box contains 100 nuts, providing you with ample supply for multiple tasks. Upgrade your fastening game with the Hillman 150009 Hex Nuts.

What We Like
Corrosion-resistant finish
Prevents stripping
Ample supply of 100 nuts
#TOP 2

Mr. Pen Metric Hex Nuts Kit

ERCY145M422
Mr. Pen Metric Hex Nuts Kit Cover
Mr. Pen- Metric Hex Nuts Assortment Kit, 145 pcs, Stainless Steel, Metric Nut Assortment 7 Sizes (M3 M4 M5 M6 M8 M10 M12), Hardware Nuts, Metric Nuts, Machine Nuts, M6 Nut, M3 Nuts, M8 Nut, M4 Nuts

The Mr. Pen Hex Nuts assortment kit offers 145 pieces in seven different metric sizes, making it an excellent choice for your fastening needs. Crafted from high-quality 304 stainless steel, these nuts are built to last, providing you with rust and corrosion resistance for reliable use. Each size is organized in a labeled storage case, ensuring you can quickly find the right nut when you need it. This kit is perfect for various applications, whether you're working on professional construction projects, DIY tasks, or home repairs, giving you the flexibility to tackle any job with ease.

What We Like
Diverse size selection
Durable stainless steel
Rust and corrosion resistant
Organized storage case
Versatile for multiple uses
#TOP 3

Wensilon 1/4-20 Stainless Steel Hex Nuts

Wensilon
LJLM19
silver
1/4-20
Wensilon 1/4-20 Stainless Steel Hex Nuts Cover
Wensilon 1/4-20 304 Stainless Steel Hex-Nuts (50pcs)

The Wensilon Hex Nuts are designed with a 1/4-20 thread size, making them ideal for a variety of applications. With a coarse thread type and a hex drive size of 7/16 inches, these nuts provide a secure fit and easy installation for users. Made from durable 322 stainless steel, they offer excellent strength and resist corrosion, even in tough environments. Additionally, the bright silver finish not only looks clean but also enhances visibility during your projects. With 50 pieces in a package, you'll have plenty to tackle multiple tasks.

What We Like
Durable stainless steel construction
Corrosion resistant
Easy installation
Includes 50 pieces
#TOP 4

uxcell M4 Stainless Steel Hex Nuts

a18082200ux0400
Silver
M4x0.7mm
uxcell M4 Stainless Steel Hex Nuts Cover
uxcell Hex Nuts, M4x0.7mm Metric Coarse Thread Hexagon Nut, Stainless Steel 304, Pack of 50

The uxcell M4 Hex Nuts are designed with a coarse thread and a diameter of M4, making them ideal for fastening applications. With a width of 0.28 inches and a height of 0.13 inches, these nuts fit perfectly onto screws, bolts, or threaded rods of the same size. Made from stainless steel 304, they offer excellent resistance to rust, ensuring durability in various environments. This means you can rely on them for both industrial projects and everyday use, providing a dependable solution for your fastening needs.

What We Like
Excellent rust resistance
Compatible with various fasteners
Durable stainless steel material
Ideal for industrial use
#TOP 5

Bates 1/4-20 Stainless Steel Hex Nuts

OYBH020B337
Silver
1/4"-20
Bates 1/4-20 Stainless Steel Hex Nuts Cover
Bates- Stainless Steel Hex Nut, 1/4-20, 50 Pack, Stainless Steel Nuts, Hardware Nuts, Metal Nuts, Steel Nut, 1/4 Nut, 1/4-20 Nut, 1/4 20 Nut, 1/4-20 Nuts, 1/4 Nuts, 1/4 20 Nuts

The Bates Hex Nuts come in a pack of 50, ensuring you have plenty for your projects. Made from 304 stainless steel, these nuts are built to last, offering protection against rust and corrosion in damp environments. Their 1/4-inch diameter and 20 threads per inch make them compatible with a variety of bolts and screws, providing you with versatility for different applications. The precision threads allow for easy installation and a secure fit, minimizing the risk of stripping and ensuring a reliable connection.

What We Like
Durable stainless steel construction
Corrosion resistance
Versatile for various applications
Easy installation with secure grip
#TOP 6

ZQZ 145 PCS Metric Hex Nut Set

ZQZ
0655365167310
Assorted,Clear
ZQZ 145 PCS Metric Hex Nut Set Cover
ZQZ 145 PCS Assorted Stainless Steel Hex Nuts Assortment Kit M3 M4 M5 M6 M8 M10 M12 Metric Hex Nut Set Hardware

The ZQZ Hex Nut Assortment offers a comprehensive selection of 145 pieces in various metric sizes, ensuring you have the right nut for any project. Made from durable 304 stainless steel, these hex nuts resist rust and corrosion, providing long-lasting performance. The convenient storage box keeps each size organized and easily accessible, preventing any loss or mix-up. With a wide range of applications, these nuts are ideal for securing components in machinery, electronics, and household items, making them a versatile addition to your toolkit.

What We Like
Diverse size options
Durable stainless steel
Organized storage box
Versatile applications
#TOP 7

The Hillman Group 3864 Hex Nuts

3864
3/8"
The Hillman Group 3864 Hex Nuts Cover
The Hillman Group 3864 3/8-24 Grade 5 Hex Nuts SAE Zinc Plated (20-Pack)

The Hillman Hex Nuts are designed with a hexagonal shape and internal threading, making them ideal for various general applications. These nuts are particularly useful when working in tight spaces, allowing you to secure components effectively. The zinc plating offers moderate resistance to corrosion, ensuring durability and longevity in different environments. Each pack contains 20 nuts, giving you plenty for your projects. With these features, you can tackle your tasks with confidence and convenience, knowing you have reliable hardware at your disposal.

What We Like
Durable zinc plating
Ideal for tight spaces
Versatile for general use
20-pack quantity
#TOP 8

Vifmy 150pcs SAE Hex Nuts Kit

Vifmy
A2-70
Silver
SAE 150 Pack
Vifmy 150pcs SAE Hex Nuts Kit Cover
Vifmy 150pcs SAE Hex Nuts Assortment Kit,4#40 6#32 8#32 10#24 10#32 12#24 1/4-20 5/16-18 3/8-16 1/2-13 Hardware Nuts Sets,304 Stainless Steel

The Vifmy Hex Nuts Set includes 150 pieces in ten different sizes, allowing you to tackle a variety of projects with ease. Made from durable 304 stainless steel, these nuts resist rust and corrosion, ensuring long-lasting performance in any application. The convenient storage box keeps your nuts organized, making it simple to find the right size without any hassle. Additionally, the easy installation process means you can quickly secure items using just a wrench, making this set perfect for both DIY enthusiasts and professionals alike.

What We Like
Durable 304 stainless steel
Organized storage box
Versatile applications
Easy installation
#TOP 9

Steel Hex Nut, Grade 2 by Small Parts

B009EE4YR8
Silver
1-1/8"-7
Steel Hex Nut, Grade 2 by Small Parts Cover
Steel Hex Nut, Zinc Plated Finish, Grade 2, ASME B18.2.2, 1-1/8"-7 Thread Size, 1-11/16" Width Across Flats, 31/32" Thick (Pack of 10)

The Small Parts Hex Nut is designed for easy tightening with a wrench from the side, making it ideal for tight spaces where overhead access is limited. Made from Grade 2 steel, it provides excellent toughness, ensuring durability in various applications. The zinc plating not only enhances its reflective appearance but also offers resistance to corrosion, prolonging its lifespan. Additionally, this hex nut meets ASME B18.2.2 specifications, assuring you of its quality and reliability in your projects.

What We Like
Easy side access
Durable Grade 2 steel
Corrosion-resistant zinc plating
Meets ASME specifications
#TOP 10

Hard-to-Find Fastener Grade 8 Hex Nuts

014973261887
Yellow
5/8-18-Inch
Hard-to-Find Fastener Grade 8 Hex Nuts Cover
Hard-to-Find Fastener 014973261887 Grade 8 Fine Hex Nuts, 5/8-18, Piece-6

The Hard-to-Find Hex Nuts are designed to meet your fastening needs with a diameter of 5/8 inches, ensuring a robust connection for various applications. With a thickness of 35/64 inches, these nuts provide added strength, making them suitable for heavy-duty tasks. Made from durable steel and coated with yellow zinc, they resist corrosion, enhancing their longevity and reliability. The driver type is a 15/16" wrench, making installation quick and easy, so you can focus on your project without hassle.

What We Like
Durable steel construction
Corrosion-resistant finish
Easy installation
Heavy-duty strength
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How are hex nuts sized?

Hex nuts are sized based on their nominal thread diameter. The sizes range from 1/4" to about 2 1/2" and are specified in inches, usually in fractional measurements. The size refers to the width across flats and across corners, as well as the thickness of the nut.

2. What is the difference between a square nut and a hex nut?

Compared to hex nuts, square nuts have a greater surface in contact with the part being fastened. This provides greater resistance to loosening, but also greater resistance to tightening. Square nuts are also less likely to become rounded-off after repeated loosening/tightening cycles.

3. What are the disadvantages of hex nuts?

Hex nuts have a higher profile compared to other types of fasteners. The tools used to tighten them generally take up more room and require either a wrench or a socket. This can make it tricky to fit them in tight spaces.

4. How do I know what size nut I need?

To determine the size of a nut, you can use a measuring tape. Measure the nut starting from one of the ends up to the nut's outer perimeter. Each line on the tape measure is equal to 1mm. If the nut follows a US standard, you may need to divide the tape measure into sixteenths.

5. What are the different types of hex nuts?

There are various types of hex nuts, including finished hex, semi-finished hex, hex flange, hex jam, heavy hex, and slotted hex. These nuts are hexagonally shaped and offer versatility in different applications. However, they require a wrench for installation.

6. Why don't we use square nuts?

Hex nuts have become more widely used and have become the universal shape for most nuts. They are easier to install and tighten compared to square nuts. Hex nuts have six sides, offering more torque and making them easier to work with, while square nuts only have four sides.

Editor's Notes

During our hex nut research, we found 24 hex nut products and shortlisted 10 quality products. We collected and analyzed 10,877 customer reviews through our big data system to write the hex nuts list. We found that most customers choose hex nuts with an average price of $7.25.

The hex nuts are available for purchase. We have researched hundreds of brands and picked the top brands of hex nuts, including Hillman, Mr. Pen, Wensilon, uxcell, Bates Choice. The seller of top 1 product has received honest feedback from 105 consumers with an average rating of 4.9.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.