Clasps

Clasps are fastening devices used to join two ends of a flexible item to secure it closed. They are found on jewelry, clothing, bags, and various equipment, and come in a wide range of designs to suit different aesthetic and functional needs.

Common types include hook and eye, toggles, spring ring, lobster clasps, box clasps, and magnetic clasps. Hook and eye clasps rely on a small hook that latches into a matching eye. Toggle clasps use a bar threaded through a ring. Spring ring and lobster clasps are spring-loaded hooks that retract to release. Box clasps involve a tab that fits into a decorative box, often with a safety mechanism. Magnetic clasps use magnets to hold ends together. Additional varieties such as snap fasteners and buckle-based systems are also widely used in apparel and accessories.

Clasps are made from metals such as gold, silver, brass, stainless steel, and various alloys, as well as plated finishes, plastic, or resin. Magnets vary in strength. For jewelry, hypoallergenic materials are common; for outdoor or heavy use, corrosion resistance and strength are important considerations.

Applications and use cases vary. Jewelry clasps must secure small, delicate components while remaining user-friendly. Clothing clasps should operate smoothly and reliably, sometimes with one hand. Bags and belts require sturdy mechanisms to withstand repeated opening and closing. In climbing or safety-critical contexts, load-rated hardware is essential, and not all clasps are suitable for such use.

Maintenance involves regular inspection for wear, corrosion, or fatigue, and timely replacement of worn parts. Clasps remain a versatile solution for securing connections across a broad range of objects.