High-Strength HDG Flange Nuts (DIN 6923) – Precision Overtapped for Fast Assembly

HDG DIN6923 flange nuts integrate an integral washer to skip separate flat washers for faster assembly. Blank nuts are galvanized first then precision overtapped (+0.4~0.8mm) to avoid thread jamming with HDG bolts. Serrated or smooth flange base optional; centrifugal treatment keeps anti-vibration serrations unblocked. Thick zinc coating fits solar racks, highway guardrails and machinery. Moisture-proof cartons & fumigation-free pallets for sea shipment, only matched with hot dip galvanized bolts.