Square Head Bolt
2.As an original bolt manufacturer with selfowned factories, we eliminate middleman markups to offer competitive pricing.
3.We adopt toptier highgrade thickened steel in the industry, delivering high stability and longlasting durability.
4.Customized solutions are available to meet clients’ individual requirements.
5.Professional sales and aftersales service are provided. Feel free to send us inquiries for quotations.
6.Strict delivery schedule control ensures ontime shipment of orders.
What are Square Head Bolts?
Square head bolts are special fastening bolts with a square head structure and core general industrial fasteners. They are manufactured in strict accordance with ASME B18.2.1, the standard formulated by the American Society of Mechanical Engineers. This standard specifies the dimensional specifications, thread parameters, material requirements and performance characteristics of square head bolts, ensuring standardized dimensions, high universality and excellent interchangeability of products. Adopting a square head structure with four parallel and equal sides, the bolts feature a larger force-bearing contact surface for wrenches compared with conventional hex head bolts. They deliver more uniform and efficient torque transmission and higher fastening stability, effectively preventing bolt head slipping and wear deformation during operation, making them suitable for fastening work under high-torque and complex working conditions.
Our square head bolts are available in multiple high-quality industrial materials such as carbon steel and alloy steel, meeting differentiated application requirements including general mechanical connection, high strength and corrosion resistance, and balancing cost performance and service performance. With precision processing and full-process quality control, the products feature accurate dimensions, exquisite workmanship, high overall strength, excellent wear resistance and stability. Relying on reliable structural performance and convenient operation advantages, square head bolts are widely used in machinery manufacturing, construction engineering, bridge infrastructure, ship equipment and other fields. Usually used together with matching nuts, they form stable clamping force through precise tightening to realize firm connection and reliable fixation of various structural parts, serving as essential core fasteners in the industrial field.
Application
Jinan Star Company specializes in the production of fastener products. Our bolts, nuts and other products are widely used in machinery, railways, automobiles, construction, electrical, bridges, communications, firefighting and other industries.
Testing Equipment
1. Jinan Star Fastener Company attaches great importance to product quality and is equipped with complete quality inspection equipment, such as tensile testing machines, torque testers, metallographic microscopes, optical projectors, salt spray test chambers, coating thickness gauges, etc., which are used to test the tensile strength and elongation of fastener products and evaluate the mechanical properties of products. These equipment ensure that every link from raw materials to finished products can be strictly controlled in quality.
2. Jinan Star Fastener Company values product quality and has some quality inspection equipment like tensile testing machines, torque testers, metallographic microscopes, optical projectors, salt spray test chambers, and coating thickness gauges. They're used to test the tensile strength and elongation of fastener products and assess the mechanical properties. These equipments makes sure every stage from raw materials to finished products is strictly quality-controlled.
