Tamperproof Screw specializes in stainless steel tamper-resistant security fasteners and screws. Located in Hicksville, New York, we ship around the world to protect you from vandalism, theft, tampering, and even corrosion. Our security fasteners come in sheet metal and machine threads. Types of screws include cap, machine, sheet metal, security, one way slotted, socket pin head & self-drilling screws. Screws are available in various head styles including pan, flat, truss, button, sheet metal, metric, oval, machine MS & self-drilling. One way sex bolts, spanner & breakaway nuts, insert & screwdriver bits & tool kits are also available.