304/316 stainless steel 3-in-1 combo machine screws, compliant with GB70.1 standard, feature a hex socket drive, non-knurled design, and integrated flat & spring washers. Engineered for versatile industrial fastening, these screws offer dual-material options to suit diverse corrosion-resistance needs—304 SS for general environments and 316 SS for harsh, high-corrosion settings. The all-in-one structure eliminates separate washer assembly, ensuring efficiency and stability, making them ideal for machinery, electronics, marine equipment, and precision industrial assemblies.
Core Features & Advantages
Dual 304/316 SS Material Options: 304 stainless steel provides reliable anti-rust performance for indoor/outdoor general use; 316 SS adds enhanced corrosion resistance against saltwater, chemicals, and humid harsh environments, meeting diverse application demands.
GB70.1 Standard Compliance: Adheres to GB70.1 specifications for hex socket screws, guaranteeing consistent thread precision, dimension accuracy, and compatibility with both Chinese and global industrial components/tools.
Non-Knurled Hex Socket Design: Non-knurled surface ensures smooth installation without unintended friction, while the hex socket drive enables precise tightening in confined spaces, reducing slippage and head damage.
Integrated 3-in-1 Combo Structure: Pre-assembled with flat and spring washers in one piece—spring washer prevents loosening under vibration, flat washer distributes load evenly to protect workpiece surfaces, saving assembly time and reducing part loss.
Industrial-Grade Versatility: Suitable for machinery assembly, electronic enclosures, marine equipment, and chemical industry fasteners, balancing convenience, durability, and corrosion resistance.
Specifications
Material: 304/316 Stainless Steel (Dual Options)
Standard: GB70.1
Drive Type: Hex Socket (Inner Hexagon)
Design: Non-Knurled Surface
Structure: 3-in-1 Combo (Screw + Flat Washer + Spring Washer)
Product Type: Combination Machine Screw
Application: Machinery, Electronics, Marine Equipment, Chemical Industry, Precision Assemblies
