CASTLE NUTS – DIN 935

🔩 Secure Fastening with Cotter Pin Locking for Critical Assemblies

DIN 935 Castle Nuts—also known as slotted nuts—are hexagonal nuts featuring notched slots on one end, allowing the insertion of a cotter pin through a drilled bolt or shaft. This design provides a mechanical locking mechanism, making these nuts ideal for applications where loosening due to vibration or dynamic load must be completely prevented.

At National Fasteners, we manufacture DIN 935 castle nuts with high-precision threading, strong materials, and consistent slot profiles to ensure secure locking in safety-critical components such as axles, steering systems, and mechanical joints.

🔧 Product Specifications:

• Standard: DIN 935

• Size Range: M4 to M64

• Thread Type: Metric (Coarse)

• Thread Tolerance: 6H

• Material Options:

  • Carbon Steel

  • Brass

Available Surface Finishes:

• Zinc Plated (Clear / Yellow)

• Black Oxide

• Hot-Dip Galvanized

• Phosphate Coated

• Self-Color (Plain)

⚙️ Key Features of DIN 935 Castle Nuts:

• Six-sided design with precision-cut slots

• Allows mechanical locking using a cotter pin

• Excellent resistance to loosening from vibration or torque

• Ideal for use with pre-drilled bolts, axles, and shafts

• Suitable for both static and rotating assemblies

• Compatible with automotive, aerospace, and heavy equipment standards

🔩 Common Applications:

• Automotive axles, wheel hubs & suspension systems

• Agricultural & construction machinery

• Aerospace assemblies

• Railway and marine equipment

• Industrial machinery

• Mechanical linkages & rotating shafts

💡 Why Choose National Fasteners for DIN 935 Castle Nuts?

✅ ISO 9001:2015 Certified Manufacturer
🧪 Full In-House Quality Testing for Threads, Tolerance, and Material
⚙️ Custom Sizes, Threads & Finishes Available on Request
🏭 Bulk Production Capacity & Timely Delivery
🌍 Trusted Exporter to OEMs, Contractors, and Engineering Firms Worldwide

📞 Request a Quote or Sample

Need durable, precision-engineered DIN 935 castle nuts for your next project?
Get in touch with our team for bulk orders, samples, or custom manufacturing options.

👉 Request a Quote | 📧 sales@nationalfasteners.in | 📞 +91 70093-08799