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Castle Nuts Standard Sizes & Dimensions

DYN Fasteners offers premium-quality Castle Nuts designed for secure fastening, especially in applications requiring a cotter pin or safety wire to prevent loosening. Castle nuts are widely used in automotive, machinery, and structural applications where safety and reliability are critical.

Manufactured from high-grade carbon steel, stainless steel, and alloy steel, these nuts are available in various finishes including zinc-plated, black oxide, and hot-dip galvanized. Custom sizes and specifications can be provided upon request to meet specific project requirements.

Standard Castle Nut Size Chart

Nut Size (mm) Thread Pitch (mm) Width Across Flats (mm) Height (mm) Weight (g) Standard
M6 1.0 10 7 3 DIN 935
M8 1.25 13 9 5 DIN 935
M10 1.5 17 11 10 DIN 935
M12 1.75 19 12 15 DIN 935
M16 2.0 24 15 25 DIN 935

Note: Custom sizes and specifications are available upon request to suit specific application requirements.

Product Highlights

  • Designed to secure fastening with cotter pin or safety wire
  • High-strength materials: carbon steel, stainless steel, and alloy steel
  • Available in zinc-plated, black oxide, and galvanized finishes
  • Precision threading ensures secure and reliable assembly
  • Compliant with DIN 935 and international standards
  • Custom sizes and finishes available on request

DYN Fasteners provides durable and reliable Castle Nuts suitable for automotive, machinery, and industrial applications where safety and performance are paramount.