Cap / Acorn Nuts

Cap nuts (acorn nuts) feature a domed top that covers the bolt end, preventing injury, corrosion, and thread damage. They are widely used in furniture, playground equipment, stainless steel structures, bicycles, and aesthetic installations. Manufactured to DIN 1587 and available in common metric sizes (M4–M12), these acorn nuts ensure a clean, finished appearance. Options include A2 stainless steel for general outdoor use, A4 stainless steel for marine and highly corrosive environments, and brass for decorative applications.