Chinese National Standard / German Standard Hex Nut (thick Nuts, Thin Nuts, Flange Nuts, Multiple Categories)

1. Product application scope

Wotu hex nut covers three categories: DIN934 thick nuts, GB6172 thin nuts, and flange nuts, and complies with Chinese national standard and German standard general production specifications. The products are widely used in steel structures, power towers, engineering machinery, photovoltaic brackets, pipelines, automotive hardware and other industries. They have been exported to Southeast Asia, the Middle East, Europe and Africa for a long time, and are suitable for bulk procurement by traders and engineering projects in various countries.

2. Raw materials and processing technology

The raw material is made of high-quality Q235 carbon steel, which is available in grade 4 ordinary models and grade 8 high-strength models. The entire process of blanking, cold heading forming, precision tapping, and surface treatment is completed independently. The threads are precision taped and formed with uniform and standard textures. They mesh closely with the matching bolts and are not easy to slip and chip. The dimensional tolerances are strictly in line with international standards and are suitable for all DIN931 and DIN933 bolts.

3. Advantages of various surfaces and styles

Four surface treatments are available: blue-white zinc plated, color zinc plated, black oxide, and hot-dip galvanized. Zinc plated has a bright appearance and is excellent for indoor use; black oxide is cost-effective and suitable for equipment interiors; hot-dip galvanized has a thick zinc layer that is resistant to salt spray and is suitable for seaside and open-air infrastructure. Thin nuts are suitable for narrow installation spaces, and flange nuts come with washers to simplify assembly, prevent shock and loosening, and have multiple styles to cover different installation needs.

4. Quality inspection delivery and customized services

M6-M64 full range of specifications in stock is sufficient, regular goods are dispatched within 48 hours, and sample orders and full-container export orders can be accepted. The thread, size, and coating are inspected before leaving the factory, and defective products are strictly controlled. Nonstandard nuts can be customized according to drawings or samples, and can also be supplied in complete sets with bolts, flat washers, and spring washers. One-stop procurement saves costs, and stable production capacity ensures long-term replenishment for overseas customers.