National Hardware's 3-1/4" Zinc-Plated Swivel Staple Safety Hasp is designed to secure a wide variety of doors, cabinets, boxes, and trunks. Manufactured from hot rolled steel for durability and ribbed design for extra strength. Spring washer holds swivel staple in a fixed position at all times. For interior and exterior applications For security, all screws are concealed when hasp is closed.