Castle Nuts (Metric)

Castle Nuts (Metric)

Castle & Slotted Nuts

  • Available in both slotted and castle styles
  • Designed for use with cotter pins for secure fastening
  • Regular and fine pitch options
Diameter Regular Pitch No. Fine Pitch No. Style Height (mm) Width Across Flats (mm)
M6 1.00 46-16506 Slotted 7.5 10
M8 1.25 46-16508 1.00 46-16608 Slotted 9.5 13
M10 1.50 46-16510 1.25 46-16610 Castle 12 17
M12 1.75 46-17512 1.50 46-18612 Castle 15 19
M16 2.00 46-17516 1.50 46-18616 Castle 19 24
M20 2.50 46-17520 1.50 46-18620 Castle 22 30
Shipping & Stocking Made Simple

At GNS Industrial Supply, we don’t just deliver products—we deliver peace of mind. Unlike traditional suppliers who ship and leave the rest to you, we take a hands-on approach to your inventory management. Our team visits your location, audits your existing stock, identifies what you need, and handles the reordering process for you. We then deliver directly to your facility and restock your supply room according to your preferred system—ensuring your operation runs smoothly without overstock or downtime. It’s a smarter, more personalized way to manage industrial supplies—built for teams who don’t have time to run out of what matters.