Tamper-Pruf Screws is an industry leader in Security Fasteners and tamper proof screws, hex sockets, drilled spanners, camcrete and Torx tamper resistant fasteners - the largest distributor and manufacturer - with guaranteed next-day delivery. Security fasteners are made from Corrosion-resistant 18-8 Stainless Steel, Heat-treated Alloy Steel, and Case Hardened and Plated Low Carbon Steel. We have a complete Manufacturing Facility, with Heading, Thread Rolling and Drilling Departments.