Grade 4 / 8 Nylon Lock Nuts Material: Q235 carbon steel (grade 4), 45# carbon steel (grade 8)Strength Grade: Grade 4, Grade 8 (optional)Surface Treatment: Electro-galvanizedThread Specifications: M6, M8, M10, M12, M16, M20, M24 (Regular stock, all DIN985 specifications)Testing Standards: Locking force, thread accuracy, and dimensional tolerances all meet German standard DIN985 and Chinese standard…

Grade 4 Flange Nuts Material: Q235 high-quality carbon steelStrength Grade: Grade 4Surface Treatment: Electro-galvanizedThread Specifications: M6, M8, M10, M12, M16, M20, M22, M24 (Regular stock available, compatible with all sizes of steel structure bolts) Product Details This product is a Grade 4 national standard flange nut, an integrated washer-equipped nut specifically designed for steel structures….

Grade 4 Hexagon Nut Material: Carbon Steel Q235Strength Grade: Grade 4Surface Treatment: Electro-galvanizedSpecifications: M6, M8, M10, M12, M16 (Compatible with corresponding 4.8 grade bolts)Standards: DIN934 (German Standard), GB6170 (Chinese Standard) Product Details This product is a “dedicated matching nut” for 4.8 grade hex bolts. Manufactured to dual standards, it is suitable for both domestic and…

Grade 4 Flat Washers Material: Carbon steel Q235Strength Grade: Grade 4Surface Treatment: Electro-galvanizedSpecifications: M6, M8, M10, M12, M16 (compatible with corresponding 4.8 grade bolts)Standards: DIN125 (German Standard), GB97.1 (Chinese Standard) Product Details This product is an essential accessory for 4.8 grade bolts. It’s a fundamental flat washer for steel structure auxiliary connections, manufactured to dual…

8.8 Hex Bolts Material : Surface Treatment : Thread Specifications :

8.8 Socket head bolt Material: 35CrMo alloy steel / 45# carbon steelStrength Grade: 8.8Surface Treatment: Blackening, Electro-galvanizing (optional)Thread Specifications: M6 M8 M10 M12 M16 M20 M24 (Regular stock, all sizes conforming to DIN912)Testing Standards: Tensile strength, yield strength, hardness, and thread precision all meet DIN912 and national standards. Product Details This product is a DIN912…

8.8 Double-Ended Studs Material : Carbon Steel Q235Strength Grade : 4.8Surface Treatment : Electro-galvanizedThread Specifications: M6, M8, M10, M12, M16 (Regular stock, all sizes available)Standards : DIN933 (German Standard), GB5783 (Chinese Standard) Product Details This product is a “basic general-purpose” fastener for steel structure engineering. It is a 4.8 grade fully threaded hex bolt, manufactured…

Grade 8 Spring Washers Material : Strength Grade : Surface Treatment : Thread Specifications :

Grade 8 Hexagon Nut Material: Carbon steel 45#Strength Grade: 8.8Surface Treatment: Electro-galvanizedThread Specifications: M8, M10, M12, M16, M20 (Regular stock, all specifications)Standards: DIN933 (German Standard), GB5783 (Chinese Standard) Product Details This product is a “basic necessity” for steel structure projects. It is an 8.8 grade medium-high strength fully threaded hex bolt, manufactured strictly according to…

Grade 8 Flat Washers Material: 65Mn spring steelStrength Grade: Grade 8Surface Treatment: Electro-galvanized/Hot-dip galvanized (optional)Specifications: M8 M10 M12 M16 M20 M22 M24 (suitable for corresponding bolts)Standards: DIN125 (flat washers), DIN127 (spring washers), GB93 (Chinese Standard) Product Details This product is an essential accessory for steel structure bolts, available in flat washers and spring washers. Both…

Electro-galvanized Threaded Rod Material: Q235 high-quality carbon steelSurface Treatment: Electro-galvanizedThread Specifications: M6, M8, M10, M12, M16, M20, M24 (Regular stock available, lengths 1m/2m/3m optional, can be cut)Testing Standards: Thread accuracy, dimensional tolerances, and hardness all meet the requirements of national standard GB/T 15389 Product Details This product is a national standard Q235 carbon steel electro-galvanized…

Pin shaft Material: Q195 high-quality carbon steelStyle: Flat head pin, round head pin (optional)Surface Treatment: Natural color, electro-galvanized (optional)Specifications: Φ4 Φ6 Φ8 Φ10 Φ12 Φ16 Φ20 Φ24 (Regular stock available, length can be customized)Testing Standards: Dimensional tolerances, outer diameter accuracy, and shear strength all meet national standards. Product Details This product is a Q195 carbon…

Cotter pin Material : Q195 high-quality carbon steelSurface Treatment : Electro-galvanizedSpecifications : Φ1 Φ2 Φ3 Φ4 Φ5 Φ6 Φ8 Φ10 (Regular stock available, lengths can be customized)Testing Standards : Dimensional tolerances, elasticity, and surface smoothness all meet the requirements of national standard GB/T 91. Product Details This product is a standard Q195 carbon steel cotter…

Square Washers Material: Carbon steel Q235Surface Treatment: Hot-dip galvanizedSpecifications: M16, M20, M22, M24 (compatible with corresponding 10.9S bolts)Compatible Standard: National Standard GB1228-1231 Product Details This product is a dedicated accessory for steel structure main frames, a perfect partner for high-strength bolts. Specifically designed for steel structure joint connections, its unique ingot-shaped design perfectly conforms to…