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This ISO4302 galvanized brass hex flange nut is cold-forged from lead-free H62 brass with integrated flange structure (no separate gasket needed). After high-precision thread tapping and blue-white electro-galvanized passivation, it combines brass’s superior electrical conductivity and zinc coating’s anti-corrosion performance. Widely used for conductive fastening and humid outdoor assembly.
Common alias: Brass Hex Flange Nut, Zinc Plated Brass Hex Nut, ISO4302 Conductive Flange Nut
Item | Detailed Specification |
Executive Standard | ISO4302, ISO4032, ISO965-1 |
Base Material | H62 Lead-Free Brass (RoHS/REACH compliant) |
Surface Treatment | 5-8μm blue-white zinc plating, 48h neutral salt spray resistance |
Thread Grade | 6H precision, burr-free, fully interchangeable with standard metric bolts |
Size Range | M3-M16 in stock |
Flange Structure | Integral stamping flange, anti-slip knurl optional |
Material Performance: Outperforms carbon steel nuts in conductivity and thermal conductivity, ideal for grounding connection. Galvanized coating prevents brass tarnish and salt fog corrosion in coastal environments, improving reusability.
Structural Design: Integrated flange replaces loose gaskets to avoid vibration-induced loosening. Enlarged bearing surface protects soft substrates like aluminum and plastic from crushing. Rounded chamfer prevents assembly scratches.
Compatibility & Cost: Interchangeable with mainstream DIN/GB flange nuts without tool replacement. Cold forging lowers production cost while ensuring zero thread jamming in bulk delivery.
Electrical Industry: Cabinet grounding, new energy battery and automotive wire harness fastening
Marine & Coastal Use: Yacht parts, seaside monitoring equipment against salt fog erosion
Light Machinery & Furniture: Aluminum profiles, outdoor furniture and medical plastic equipment assembly
Custom Insert Application: Low-temperature annealed models for plastic hot-melt embedding
Raw material spectral inspection for lead-free compliance
Automatic cold forging for crack-free one-piece molding
CNC tapping + ultrasonic deburring
Closed-loop galvanizing and chromate passivation
Salt spray, torque and dimensional sampling inspection
Anti-rust sealed packaging for export shipment
Surface: Yellow zinc, nickel plating, tin plating
Structure: Anti-slip flange, low-profile type, fine thread
Material: H59 brass, phosphor copper for extreme corrosion resistance
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