JIS B 1180Hexagon Head Bolts
The JIS B 1180 Hexagon Head Bolts are manufactured in strict accordance with the Japanese Industrial Standard JIS B 1180, which specifies the dimensions, materials, mechanical properties, and testing requirements for hexagon head bolts used across a wide range of industries. This comprehensive standard covers bolts with thread sizes ranging from M1.6 to M64, in property classes from 4.6 to 12.9, and includes various styles such as fully threaded and partially threaded configurations. The hexagon head design provides excellent torque transfer and ease of tightening with standard wrenches, making these bolts suitable for general-purpose fastening in machinery assembly, automotive manufacturing, construction equipment, electronics, and infrastructure projects. Manufacturers producing these bolts must comply with rigorous quality control requirements, including thread gauging, tensile testing, and hardness verification, to ensure consistent product quality and dimensional accuracy.
The Japanese standard bolt is characterized by its precise metric dimensions and strict adherence to JIS tolerances, which are often more stringent than other international standards such as DIN or ISO in certain aspects. These bolts feature a standard hexagon head with a chamfered top edge and a flat bearing surface, ensuring proper seating and load distribution. They are available in various thread pitches including coarse, fine, and extra-fine, with lengths ranging from short to long to accommodate different connection requirements. The JIS B 1180 standard also specifies detailed head dimensions including width across flats, width across corners, and head height, ensuring interchangeability and compatibility with other JIS-standard components. These bolts are widely used in Japanese-manufactured equipment and have gained significant acceptance in global markets due to their reliability and precision.
Our Zinc plated bolt features a protective electroplated zinc coating applied to the bolt surface through an electrochemical deposition process. The zinc plating provides effective corrosion resistance in indoor and moderately exposed environments, protecting the steel substrate from rust and oxidation. Various plating thicknesses are available, typically ranging from 5 to 15 microns, with optional chromate conversion coatings (yellow, clear, black, or olive drab) to enhance corrosion protection and provide aesthetic options. The zinc plating also offers lubricity that helps reduce friction during installation, ensuring consistent torque-tension relationships. These bolts are commonly used in general construction, automotive components, electrical equipment, furniture manufacturing, and maintenance applications where cost-effective corrosion protection is sufficient. All our products are supplied with complete documentation including material certificates, test reports, and plating thickness verification to ensure full quality assurance.
