Tamperproof Screw specializes in stainless steel tamper-resistant security fasteners and screws, and we are ISO 9001:2008 certified. Located in Hicksville, New York, we supply millions of stainless steel tamper-resistant screws and tens of thousands of matching tools throughout the world. For over thirty-five years, we've been a leading manufacturer of security fasteners, spanners, nuts, bolts and more. We also offer a complete line of matching screwdriver tools and an assortment of convenient kits that can be used to install and remove your security fasteners. Without such tools, these security fasteners and screws are virtually impossible to remove, and protect you against vandalism, theft, tampering, and even corrosion. Our tamper-resistant security fasteners are a smart choice when security matters. Our extensive collection of professional grade security fasteners are sure to get the job done. We stock thousands of security fasteners, screw sizes and head styles, and many orders are shipped the day they are placed. Our competitive pricing and accurate, up to date stock information make getting the security fasteners you need fast and easy.