Square Head Bolts
Square head bolts feature a design with a square-shaped head and a threaded shaft, typically made from steel, stainless steel, or galvanized steel, and are available in various sizes.

High Quality Square Head Bolts
SSM offers square head bolts with a square-shaped head and threaded shaft. The square head provides a larger surface area for tools to grip, making it easier to apply torque. These bolts are commonly used in construction, machinery, and industrial applications to establish a secure connection. The square design enables the bolts to align more easily with tools like wrenches, especially in tight spaces or where traditional hex head bolts may not work.
- Afmeting: 1/4″ – 1 1/2″
- Productienorm: ASME B18.2.1
- Materialen: koolstofstaal, roestvrij staal, nikkel legeringen.
- Coatings: Opties zoals zinkplating, thermisch verzinken of zwart oxide voor corrosiebestendigheid.
Application of Square Head Bolts
Square head bolts’ strong grip, ease of alignment, and high strength make square head bolts a preferred choice in specific industrial, structural, and historical contexts.

Advantages & Disadvantages of Square Head Bolts
Voordelen
Square-head bolts offer several advantages. They provide increased grip due to the larger surface area of the square head, which reduces slippage during tightening, making them particularly useful in tight spaces. They are easier to align with wrenches or pliers, making installation more straightforward. These bolts are durable and suitable for high-strength applications, providing reliable performance under heavy loads. The simple design of the square head can also reduce manufacturing costs, and they offer good corrosion resistance when made from stainless or galvanized steel.
Nadelen
However, square-head bolts are less common than hex-head bolts, which makes specific sizes or materials harder to find. They may also be less compatible with modern tools, as fewer tools are designed explicitly for square heads, requiring more specialized tools. The industrial or vintage appearance of square-head bolts may not fit the aesthetic requirements of modern applications. Installing them can be more challenging when socket wrenches or power tools are needed, as hex-head bolts are more compatible with these tools.
Higher Cost: 316L stainless steel is more expensive than carbon steel or other materials.
Moeilijkheidsgraad van de verwerking: Vanwege de hoge sterkte zijn er mogelijk speciale gereedschappen en technieken nodig voor het snijden en vormen.
One-Stop Square Head Bolts Provider for All Your Needs
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More Information About Square Head Bolts
Specifications for Square Head Bolts
Standaard | Beschrijving |
ASTM A307 | It covers low-carbon steel bolts, including square-head bolts for structural and general purposes. |
ASTM A449 | It covers medium to high-strength square head bolts, which are commonly used in construction, bridges, and heavy load-bearing structures. |
ASME B18.2.1 | Specifies geometric dimensions for square head bolts, including head size, thread diameter, and length. |
DIN 479 / DIN 562 | German standards define square-head bolts’ size, material, and mechanical properties. |
ISO 8675 | International standard defines square head bolts’ design and dimensions to ensure global interchangeability. |
SAE-J429 | Covers high-strength square head bolts for the automotive industry, specifying material and mechanical performance. |
Why Can SSM Provide You with High-Quality Square Head Bolts?
With extensive industry experience, SSM’s professional team understands customers’ diverse needs and provides customized solutions. The company also prioritizes customer satisfaction by ensuring timely delivery and offering high-quality after-sales support. Additionally, SSM has a robust supply chain management system that guarantees timely access to quality raw materials and efficient production scheduling. These factors collectively enable SSM to continuously deliver reliable, high-quality square head bolts for various industries.
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