Where to buy national standard bolts and nuts/Yongnian national standard bolts and nuts manufacturer wholesale sales

Where to buy national standard bolts and nuts/Yongnian national standard bolts and nuts manufacturer wholesale sales Hexagonal nuts, referred to as nuts, also known as nuts, refer to various fasteners with internal threads in the inner hole. The grade standard for hexagonal nuts is B/- and the standard for thickened nuts is B/- the national standard standard. Yongnian County Tengxuan Fastener Manufacturing Co., Ltd. mainly produces 3 carbon steel grades up to .grade.grade.grade.grade.grade.grade. Surface treatments include natural color, color zinc plating, high-grade white zinc, boiled black and blue-white plating. Products are sold throughout the country and are mainly used in hardware, electrical appliances, automobiles, machinery, steel structures, construction, mining, transportation and other industries. Specifications range from - Both can be customized, the company's commonly used standard is and the difference between them is that B is thicker than B and larger on both sides. Hexagonal bolts. In fact, they are called hexagonal bolts in many ways. For example, they can be called hexagonal screws. Also called hexagonal bolts. This all means the same thing. The materials generally have grades. Grade. Grade. Grade. Grade. Ordinary hexagonal bolts are divided into three types: refined bolts, which are less commonly used. Generally speaking, ordinary bolts refer to high-grade ordinary bolts. .In some temporary connections and connections that need to be disassembled, ordinary bolts up to grade are commonly used. The common bolts commonly used in building structures include,,. Some rough bolts in the mechanical industry may have larger diameters and are used for special purposes. High-strength bolts 3. The materials of high-strength bolts are different from ordinary bolts. High-strength bolts are generally used for long-term connections. Commonly used ones are ~3. Oversized high-strength bolts have unstable performance and should be used with caution. High-strength hexagonal bolts The material of high-strength bolts is different from ordinary bolts. High-strength bolts are generally used for long-term connections. Commonly used ones are ~3. The performance of oversized high-strength bolts is unstable and the general usage is small. The difference between ordinary bolts and high-strength bolts: ordinary hexagonal bolts can be reused, but high-strength bolts cannot be reused. High-strength bolts are generally made of high-strength steel (No. steel (.), B (.)), which are prestressed bolts. For friction types, use a torque wrench to apply the specified prestress, and for pressure-bearing types, unscrew the torx head. Ordinary bolts are generally made of ordinary steel. Just tighten it. Ordinary bolts are generally grade ., grade ., grade . and grade . High-strength bolts are generally grade . .In fact, the screw holes of ordinary bolts are smaller than ordinary bolts, and the B-level screw holes are generally only 3~ larger than the bolts. The B-level screw holes are generally larger than the bolts. Special-shaped bolts are of high strength, high difficulty, and high-precision special-shaped goods. In order to meet the needs of users, our company continuously introduces new equipment, explores new processes, adheres to the path of quality and efficiency, and is deeply favored by many merchants with the purpose of "survive on quality, respond to customers with credibility" Reputation. Our company will contribute to the construction of key projects and customers with better products and better services. We sincerely welcome customers to come to guide and negotiate business.