Product Details

This product is a Grade 4 national standard flange nut, an integrated washer-equipped nut specifically designed for steel structures. Featuring a hexagonal flange face design, it eliminates the need for additional flat washers, making it the preferred accessory for lightweight steel structure fastening and secondary component connections. The product is manufactured from high-quality Q235 carbon steel base material through multiple processes including stamping, tapping, heat treatment, galvanizing for corrosion protection, and dimensional inspection, strictly adhering to national standard production standards. The flange face has clear anti-slip teeth, the threads are free of false teeth and burrs, and the inner hole is smooth and free of deformation. The large bearing surface design of the flange face effectively disperses tightening pressure, preventing damage to the surface of steel components. Simultaneously, the anti-slip teeth effectively prevent the nut from loosening, adapting to the tightening requirements of various steel structure bolts. Each batch undergoes thread accuracy and dimensional tolerance testing, ensuring stable quality and strong compatibility, making it an essential matching nut for steel structure engineering and lightweight steel structure assembly.

Core Technical Parameters

Material: Q235 high-quality carbon steel
Strength Grade: Grade 4
Surface Treatment: Electro-galvanized
Thread Specifications: M6, M8, M10, M12, M16, M20, M22, M24 (Regular stock available, compatible with all sizes of steel structure bolts)
Testing Standards: Dimensional tolerances, thread precision, and hardness all meet the requirements of national standard GB/T 6177.1

Core Application Scenarios:

Secondary component connections in steel structure light industrial buildings, steel bracket/railway fastening, indoor steel structure splicing, equipment rack fastening, door and window steel structure frame fixing, photovoltaic bracket installation.

Compatible Standards & Recommended Matching Equipment

Execution Standard: National Standard GB/T 6177.1
Recommended Matching Equipment: 8.8 grade hex bolts, 10.9 grade steel structure bolts (no washers required, ready to use, one-stop solution)