DIN6923 Stainless Steel Serrated Hex Flange Nut

1. Product Overview

DIN6923 serrated hex flange nut is integrated with one-piece flange & anti-slip serrated teeth, cancels separate flat washer, saves assembly cost and shortens installation time, fully compliant with DIN6923 & ISO4161 global industrial standards. We supply A2-70(304 stainless steel) & A4-80(316 stainless steel) two mainstream grades, metric size M3~M36 plus customized UNC/UNF imperial sizes, widely used for new energy, marine, automotive, construction & petrochemical equipment. Serrated bottom bites tightly onto workpiece surface to avoid loose off caused by long-term vibration, the core advantage vs ordinary hex nuts(DIN934).

2. Core Technical Spec

3. Product Unique Advantages

1. Built-in washer structure: No extra gasket needed, cuts accessory procurement cost 20%+ and speeds up automatic production line assembly.

2. Serrated anti-vibration design: Tooth-shaped flange increases friction coefficient, effectively prevents nut spin loose under continuous vibration (auto chassis, wind turbine bracket).

3. Excellent load dispersion: Wide flange spreads fastening pressure evenly, avoids dent & deformation on aluminum, plastic and thin steel sheet components.

4. Grade differentiated corrosion resistance:

   • A2-70 304: Cost-effective for inland machinery, indoor solar rack, normal outdoor construction

   • A4-80 316: Molybdenum contained, anti-chloride corrosion, exclusive for coastal marine, offshore wind, chemical pipeline, seaside curtain wall

4. Main Application Industries

• New Energy: Solar panel mounting bracket, offshore wind turbine tower & nacelle fastening (fastest growing demand in 2026)

• Automotive & EV: Chassis, exhaust system, new energy vehicle battery tray assembly

• Marine & Coastal Engineering: Yacht fittings, port equipment, seaside steel frame structure(316 grade mandatory)

• Industrial Machinery: Pump, valve, heavy-duty equipment, food pharmaceutical sanitary machinery

• Building Construction: Curtain wall, steel structure, outdoor pipeline fixing

5. Factory Service & Packing

• MOQ: Small trial order acceptable, bulk wholesale factory direct FOB price

• Certification: EN10204 3.1 MTR material report, salt spray test certificate available

• Packing: Plastic bag+carton, customized private label packing for distributors

• Lead time: Stock sizes 3~7 days delivery, customized non-standard 15~25 working days