Best Hex Bolts of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 1 Feb 2025

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Hex bolts are essential fasteners that are widely used in various industries, including construction, automotive, and manufacturing. These bolts are designed with a hexagonal head that can be easily tightened or loosened using a wrench or pliers. They are available in a range of sizes and materials, including stainless steel, carbon steel, and alloy steel. Hex bolts are known for their strength, durability, and resistance to corrosion, making them ideal for heavy-duty applications. Whether you need to secure machinery or stabilise structures, hex bolts are a reliable choice.

At a Glance: Our Top Picks

TIMCO Timber Screw Hex Head 6.7 x 75 Cover #TOP 1
TIMCO Timber Screw Hex Head 6.7 x 75
ftb score rating icon 9.8
AJFixings 150mm Hex Head Decking Screws Cover #TOP 2
AJFixings 150mm Hex Head Decking Screws
ftb score rating icon 9.7
TIMCO Advanced Coach Screw for Multiple Applications Cover #TOP 3
TIMCO Advanced Coach Screw for Multiple Applications
ftb score rating icon 9.5

Top 10 Hex Bolts

#TOP 1

TIMCO Timber Screw Hex Head 6.7 x 75

75IN
Green
6.7 x 75mm
TIMCO Timber Screw Hex Head 6.7 x 75 Cover
TIMCO Timber Screw – Hex Head – Exterior Green – 6.7 x 75 - Box of 50

The TIMCO Timber Screw is designed for durability and ease of use. Its 8mm hex head countersunk with a fixed washer ensures a secure fit, making installation straightforward for you. With long-lasting plating, it withstands up to 1,000 hours of salt spray resistance, ideal for outdoor applications. The patented lubrication feature enhances screw insertion time, allowing for quicker projects. Additionally, the helix shank helps remove debris, improving clamping and ensuring a tight hold for your constructions.

What We Like
Durable salt spray resistance
Easy installation
Enhanced screw insertion
Improved clamping
#TOP 2

AJFixings 150mm Hex Head Decking Screws

timberfix
Brown
150mm
AJFixings 150mm Hex Head Decking Screws Cover
Box 50 - AJFixings Timber Hex Head Exterior Green Decking Frame Fixing Screws (150mm)

The AJFixings Decking Screws are designed for durability and reliability in outdoor applications. Their long-lasting plating offers impressive salt spray resistance, lasting up to 1,000 hours. This means you can trust these screws to withstand the elements. The helix shank effectively removes debris, improving clamping and ensuring a secure fit. With a 50° deep single thread, these screws provide high pull-out resistance, giving you peace of mind that your fixings will stay in place.

What We Like
Durable salt spray resistance
Improved clamping with helix shank
High pull-out resistance
Convenient countersunk hex head
#TOP 3

TIMCO Advanced Coach Screw for Multiple Applications

680SCSY
Yellow
6.0 x 80
TIMCO Advanced Coach Screw for Multiple Applications Cover
TIMCO Advanced Coach Screw | Hex Flange Head | Slash Point | Yellow | 6.0 x 80 | Box of 100 (680SCSY)

The TIMCO Coach Screw is an exceptional choice for various heavy-duty applications such as timber framing, landscaping, and decking. Its aggressive slash point tip ensures easy driving, making your projects smoother and reducing the risk of splitting wood. With an external hex flanged head and a partially-threaded shank, you will benefit from excellent clamping strength, ensuring your structures remain secure. Additionally, the screw is compatible with power tools, providing you with a convenient and efficient installation experience.

What We Like
Versatile for many applications
Easy driving, reduces splitting
Strong clamping strength
Power tool compatible
#TOP 4

TIMCO Advanced Coach Screw 6.0 x 50 Box

650SCSY
Yellow
6.0 x 50
TIMCO Advanced Coach Screw 6.0 x 50 Box Cover
TIMCO Advanced Coach Screw | Hex Flange Head | Slash Point | Yellow | 6.0 x 50 | Box of 100 (650SCSY)

The TIMCO Coach Screw is a heavy-duty solution perfect for various applications like timber framing, landscaping, and decking. Its aggressive slash point tip makes driving the screw easy, reducing the risk of splitting wood, which can save you time and frustration. The external hex flanged head combined with the partially-threaded shank provides excellent clamping strength, ensuring your projects remain secure. Plus, it's compatible with power tools, making installation quicker and more efficient for you.

What We Like
Versatile for multiple applications
Easy to drive, reduces splitting
Strong clamping strength
Power tool compatible

AMLOOPH M6 Hex Socket Button Head Bolts

M6x30mm-A2(20)
Silver
M6x30mm-A2(20)
AMLOOPH M6 Hex Socket Button Head Bolts Cover
AMLOOPH M6 Bolts, M6 X 30mm Hex Socket Button Head Machine Bolts/Screws -Fully Threaded A2 304 Stainless Steel Hex Long Socket Screws M6 (Pack Of 20)

The AMLOOPH M6 Bolts are high-quality hexagon socket button head bolts, designed to meet the ISO 7380 standard. This pack includes 20 fully threaded bolts, providing you with an ample supply for various projects. Each bolt features a 30mm length and a durable 304 stainless steel construction, ensuring they are suitable for household tasks, furniture assembly, and home repairs. With their precise dimensions, these bolts offer convenience and reliability for any mechanical appliance you may need to secure.

What We Like
Durable stainless steel material
Includes 20 bolts per pack
Meets ISO 7380 standard
Ideal for household and furniture use

Merriway Hex Head Bolts with Nuts

BH02278
Bright Zinc Plated
M5 x 40 mm
Merriway Hex Head Bolts with Nuts Cover
Merriway BH02278 (6 Pcs) Steel Hex Head Bolts with Nuts M5 x 40mm - Pack of 6 Pieces, Bright Zinc Plated

The Merriway Hex Head Bolts are a reliable pack of six BZP M5 x 40mm bolts. The hex head design allows for quick and efficient driving, making your assembly tasks easier. Each pack includes nuts, ensuring you have everything you need for your projects. It's important to follow any included instructions for fixing and maintenance, as this ensures a proper fit and longevity of use. These features provide convenience and reliability for all your fastening needs.

What We Like
Quick and easy installation
Includes necessary nuts
Durable bright zinc plating
Efficient hex head design
#TOP 7

AMLOOPH M6 20mm Stainless Steel Screws

M6x20mm(20)
Silver
M6x20mm(20)
AMLOOPH M6 20mm Stainless Steel Screws Cover
AMLOOPH M6 Screws, M6 X 20mm Allen Socket Head Cap Screws/Bolts - 6mm Diameter Fully Threaded M6 Bolts 20mm A2 Stainless Steel Long Hex Socket Bolt M6 Coarse (Pack Of 20)

The AMLOOPH M6 Screws are high-quality fasteners designed for various applications. With a length of 20mm and a fully threaded design, they are ideal for household projects and furniture assembly. Made from premium A2 Grade Stainless Steel, these screws ensure durability and resistance to corrosion. Their Allen socket head allows for easy tightening with a key, providing you with superior grip and control during installation. These features make the AMLOOPH M6 Screws a reliable choice for home repairs and mechanical appliances.

What We Like
High-quality stainless steel
Easy to tighten with a key
Durable and corrosion-resistant
Ideal for various applications
#TOP 8

YEEZET 44-Piece Hex Bolts and Nuts Kit

YEEZET
Stainless Steel
YEEZET 44-Piece Hex Bolts and Nuts Kit Cover
YEEZET 44 Pieces M6 M8 M10 304 Stainless Steel Hex Bolts, Washers, Spring Washers & Nuts Assortment Kit

The YEEZET Hex Bolts Kit offers high-quality 304 stainless steel components that are resistant to rust, moisture, and corrosion. This ensures durability and longevity, making it ideal for various applications. The standard size and precise threading provide a secure grip, preventing slippage during use. Moreover, the assortment features a variety of screws, nuts, and washers that cater to different needs, allowing you to manage various projects with ease. The practical plastic packaging keeps everything organised and protected, adding convenience to your toolkit.

What We Like
High-quality stainless steel
Variety of sizes available
Secure grip with standard sizing
Durable and practical packaging

72 Pcs M6 Hex Socket Bolt Set

QiXinGYL
Black
72 Pcs M6 Hex Socket Bolt Set Cover
72 Pcs M6 Bolts Set, Black Flat Head Furniture Bolts, Hex Socket Countersunk Screws, Metric Thread Fully Threaded Bolts, Allen Key Bolts Set, Hexagonal Socket Machine Screws Bolts Set

The QiXinGYL Bolt Set includes 72 high-quality carbon steel hex bolts designed for durability and performance. These corrosion-resistant bolts maintain their strength in harsh conditions, ensuring reliable use for various applications. Their flat head design allows for a flush finish, enhancing the appearance of your projects. With a full-thread design, these bolts offer excellent tensile strength, making them easy to tighten and remove without slipping, providing you with convenience and efficiency in your work.

What We Like
Durable carbon steel material
Corrosion-resistant design
Flush flat head finish
Easy to tighten and remove
Variety of sizes included
#TOP 10

M8 Hex Set Screws - A2 Stainless Steel

M8 x 20mm
M8 Hex Set Screws - A2 Stainless Steel Cover
M8 (8mm x 20mm) Hex Set Screw (Fully Threaded Bolt) - A2 Grade Stainless Steel (pack of 20)

The RC Screws M8 Set is designed with an 8mm thread size and a 20mm length, making it ideal for various fastening tasks. The 13mm head diameter ensures a secure grip, providing stability during use. Additionally, the fully threaded design allows for versatile applications, offering convenience in different projects. Made from A2 grade stainless steel, these screws resist corrosion, ensuring durability and longevity in your work.

What We Like
Durable stainless steel material
Fully threaded for versatility
Secure grip with large head
Ideal for various projects
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are hex bolts used for?

Hex bolts, or hex cap screws, are large bolts with a six-sided head (hexagonal!) used to fasten wood to wood, or metal to wood.

2. What is hex size on bolt?

Each size is denoted by the letter 'M' followed by a number. This number indicates the outer diameter of the thread, measured in millimetres. As an example, a hex bolt with a thread size of M8 would have an outer diameter of 8mm.

Editor's Notes

During our hex bolt research, we found 306 hex bolt products and shortlisted 10 quality products. We collected and analyzed 25,467 customer reviews through our big data system to write the hex bolts list. We found that most customers choose hex bolts with an average price of £7.16.

The hex bolts are available for purchase. We have researched hundreds of brands and picked the top brands of hex bolts, including TIMCO, AJ Timber, AMLOOPH, Merriway, YEEZET. The seller of top 1 product has received honest feedback from 1,805 consumers with an average rating of 4.3.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.