Best Square Head Bolts of 2025
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Square head bolts are a type of fastener that feature a square-shaped head instead of the more common hexagonal shape. These bolts are commonly used in applications where a high level of clamping force is required, such as in heavy machinery or construction equipment. Square head bolts are known for their durability and strength, making them a popular choice for industrial and commercial projects. They are available in a variety of sizes and materials, making them suitable for a wide range of applications.
At a Glance: Our Top Picks
#TOP 1
9.8
#TOP 2
9.7
#TOP 3
9.5
Top 10 Square Head Bolts
sourcing map Square Head Bolts, 10pcs M6 x 20mm
The sourcing map Square Head Bolts are made from durable carbon steel with a zinc-plated finish, offering excellent rust prevention. Each bolt measures M6 x 20mm, ensuring compatibility for various applications. The square head design provides a larger bearing area, making installation easier and more secure. With high strength and good wear resistance, these bolts are ideal for tasks such as toilet lid installation, machinery assembly, and DIY projects, giving you confidence in their performance.
sourcing map M10x30mm Square Head Bolt Set
The sourcing map Square Head Bolts are crafted from durable 304 stainless steel, ensuring they resist rust and corrosion. With a thread size of M10 x 30mm, they provide a secure fit for various applications. The square head design offers a larger bearing area, making them ideal for machinery assembly and maintenance. You will find them useful in diverse projects, from constructing guardrails to installing pipelines, both indoors and outdoors.
sourcing map Square Head Bolt 20pcs M6
The sourcing map Square Bolts are made from durable carbon steel with a zinc plated finish, ensuring they resist rust and wear. This makes them ideal for a range of applications, including toilet lid installation and machinery assembly. The square head design provides a larger bearing area, allowing for better grip and stability during use. With a thread size of M6 x 20mm, these bolts are versatile and can easily fit various projects, making them a convenient choice for DIY enthusiasts and professionals alike.
sourcing map Square Head Bolt 2pcs M6x25mm
The sourcing map Square Head Bolt is crafted from durable 304 stainless steel, ensuring it remains rust-free and corrosion-resistant. With a thread size of M6 x 25mm, it provides a secure fit for various applications. Its square head design offers a larger bearing area, making it ideal for stable assemblies. You will find it useful for projects like machinery maintenance or DIY tasks, where reliability is essential for your work.
sourcing map Square Head Bolt 10pcs M4x20mm
The sourcing map Square Head Bolts are made from 304 stainless steel, ensuring durability and resistance to rust and corrosion. With a thread size of M4 x 20mm, they provide a reliable fastening solution for various applications. The square head design offers a larger bearing area, making it easier for you to tighten and loosen with a wrench or pliers. This makes them ideal for machinery assembly, electrical connections, and construction projects, ensuring you have the right hardware for your DIY tasks.
AHC MILD Steel Cup Square Bolts with Nuts
The AHC Square Bolts are designed with a round head and a square neck, ensuring they remain stationary while you tighten the nut. This feature is particularly beneficial for timber-to-timber joining, providing a secure connection. Each pack includes hex nuts, adding convenience to your projects. Moreover, the zinc plating significantly enhances resistance to corrosion, making these bolts suitable for various environmental conditions. With these attributes, you can trust that your installations will be durable and reliable.
AHCMetric MILD Steel Square Bolts with Nuts
The AHCMetric Square Bolts are designed with a round head and a square neck, ensuring that the bolt remains secure while you tighten the nut. This feature is particularly useful for timber to timber joining, providing stability and strength to your projects. Each pack includes a hex nut, making installation straightforward and efficient. The bolts are also zinc plated, which enhances their resistance to corrosion, ensuring longevity and durability even in challenging conditions. You can trust these bolts for your building needs.
AHC MILD Steel Cup Square Bolts with Nuts
The AHC Square Bolts are designed with a round head and square neck, ensuring they remain stationary while you tighten the nut. This feature is particularly beneficial for timber joining, providing a secure fit. Each pack includes a hex nut, making installation straightforward and efficient. Additionally, the zinc plating offers enhanced corrosion resistance, ensuring durability and longevity in various conditions. You can rely on these bolts for reliable performance in your projects.
AHCMetric MILD Steel Square Cup Bolts with Nuts
The AHCMetric Square Cup Bolts are designed with a round head and square neck, ensuring that the bolt remains secure while you tighten the nut. This feature is particularly useful for timber-to-timber joining, providing a strong and stable connection for your projects. The included hex nut makes installation straightforward and efficient. Additionally, the zinc plating enhances resistance to corrosion, ensuring durability and longevity even in challenging environments. With these bolts, you can confidently complete your woodworking tasks.
AHC MILD Steel Square Bolts with Nuts
The AHC Square Bolts are designed with a round head and a square neck, ensuring they won't turn while you tighten the nut. This feature provides you with peace of mind, especially when joining timber to timber, as it allows for a secure hold. Each pack includes a hex nut, making installation straightforward. Additionally, the zinc plating offers increased resistance to corrosion, which is particularly beneficial for outdoor projects where durability is essential.
Frequently Asked Questions (FAQs)
1. What are bolts with square heads called?
At one time, square head bolts (aka square bolts) were the industry standard before being replaced by hex head bolts. Now, they are commonly chosen for aesthetic reasons to create a rustic look in new buildings or to match existing fasteners in an old building.
2. What are square head bolts used for?
Square bolts are now most commonly used for aesthetic purposes to provide a rustic look in a new structure or to match existing fasteners in an older structure. Square lag screws are also used for these purposes. Crossarm or machine bolts are commonly supplied for the utility industry and included an added cone point.
3. What is square head shaping?
Our Square Head Bolts have a 4-sided square head instead of a 6-sided hexagonal head in a hex bolt. They have a square shaped wrenching head which is used with a square nut. ... Square head bolts have a greater bearing section for gripping. They allow for more tightening than a hex head.
During our square head bolt research, we found 62 square head bolt products and shortlisted 10 quality products. We collected and analyzed 7,502 customer reviews through our big data system to write the square head bolts list. We found that most customers choose square head bolts with an average price of £6.90.
The square head bolts are available for purchase. We have researched hundreds of brands and picked the top brands of square head bolts, including sourcing map, AHC. The seller of top 1 product has received honest feedback from 20,002 consumers with an average rating of 4.8.
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.