Industrial-grade hexagon head bolt set, grade 10.9, blackened, GB5782/GB5783-Contact customer service before placing an order.

The largeflange design with a wide head complies with GB T 5787 5788 standards expanding the contact area to distribute pressure and prevent damage Anti-slip teeth patterns on the flange surface boost friction for strong anti-loosening performance ensuring secure connections Excellent material and compatibility: Made from high-strength materials, available in strength grades such as 8.8 and 10.9, ensuring high durability; widely compatible with fastening requirements in mechanical, automotive, and industrial equipment applications, offering strong versatility. Reliable installation and use: Produced to standardized specifications with precise dimensions, enabling easy installation; effectively ensures long-term stability of component connections, reduces the risk of loosening, and minimizes maintenance costs. Compliance assurance: Strictly produced in accordance with national standards GB/T 5787/5788, with precise and unified specifications and parameters, compliant with industry-standard specifications, ensuring reliable procurement and use. The flange and bolt are integrally formed removing washer needs and simplifying installation Surface treatments like zinc plating enhance corrosion resistance Available in M8 to M42 with customization options Bulk discounts free samples for testing and lifetime technical support ensure optimal per.syi