Flat Square Nuts (DIN 562) – Zinc Plated High Tensile Steel Grade 4.8

FULLERKREG DIN 562 thin pattern square nuts in grade 4.8 low carbon steel (Q195) with electro zinc plating (Zinc CR3, RoHS-compliant trivalent chromate) offer a cost-effective fastening solution for general engineering, construction, and light industrial applications. The four-sided geometry provides a larger bearing surface than hexagonal nuts, enabling higher clamping torque and superior resistance to loosening in wood, sheet metal, and structural assemblies. The reduced thickness compared to DIN 557 counterparts makes them ideal for space-constrained applications.

Product Specifications

Dimensional Data

All dimensions in millimeters (mm). Weight per 1000 pcs in kg. Unit weight (g/pc) calculated from standard data.

Note: Weights are calculated based on Q195 carbon steel density (7.85 g/cm³) per DIN 562 geometry. Zinc plating adds approximately 5–12 μm per surface.

Mechanical Properties – Grade 4.8

Selection Guide

Surface Treatment – Zinc CR3 Explained

FULLERKREG applies electro zinc plating with trivalent chromate passivation (CR3) to all grade 4.8 DIN 562 square nuts. CR3 (trivalent chromium) replaces the legacy hexavalent CR6 process, ensuring full compliance with EU RoHS, ELV, and REACH directives. The zinc layer provides cathodic protection against corrosion, while the chromate conversion coating enhances salt spray resistance and gives the fastener its characteristic bright silver appearance.

• Salt spray resistance: ≥72 hours (white rust) per ISO 9227
• Plating thickness: 5–12 μm
• Appearance: Bright silver / clear
• RoHS / ELV / REACH: Fully compliant

Standard Reference

DIN 562 specifies thin pattern square nuts with metric threads, issued by the Deutsches Institut für Normung (DIN). The standard remains widely used in Germany, Europe, and globally for applications where no direct ISO equivalent exists or where legacy compatibility is required. FULLERKREG manufactures these nuts in Q195 low carbon steel with strict conformance to DIN 562 dimensional tolerances, zinc-plated with CR3 trivalent chromate for environmental compliance.

Product Gallery

DIN 562 Grade 4.8 Zinc Plated Thin Square Nuts – actual product photos

Why Choose FULLERKREG?

🏭 Direct Manufacturer – Factory-direct pricing with full dimensional traceability
📐 DIN Precision – Strict conformance to DIN 562 tolerances, verified by incoming QC
⚡ Grade 4.8 Strength – Q195 low carbon steel with consistent mechanical properties
🛡️ CR3 Zinc Plating – RoHS-compliant trivalent chromate, ≥72h salt spray resistance
✅ RoHS / ELV Compliant – Meets EU environmental directives for automotive and electronics
📦 Bulk Wholesale Ready – MOQ flexible, available in bags, boxes, or bulk cartons
🌍 Global Shipping – Reliable export logistics to Europe, North America, Southeast Asia
💬 Technical Support – Engineering team available for specification and substitution queries