Forward One-Way Round Head Machine SS-304 Security Screw. Special tamper proof and anti theft screw. This has a unique head that requires only a slotted screwdriver for insertion, making this ideal security screw for one way permanet applications.Machine screws are used with nuts or screwed directly into a threaded receptacle to fasten variousponents together in machines, tools, etc. Fasten with a screwdriver to reduce risk 5/5(11)Price: $4.7Brand: HillmanStainless Button-Head Star Drive Security Machine Screw (1 stainless steel flat head torx security machine screwJan 04, 2020 ...These fasteners are made from highly corrosion resistant 304 stainless steel making them both tamper and weather resistant. Anti Theft Machine Screws provide a higher level of security for you with their drive design, which prevents removal with normal screw drivers.LOSS PREVENTION FASTENERS carries aplete line of Tamper Resistant / Security Sheet Metal Screws, TORX PLUS®, TORX® Tamper Resistant, Hex or Socket Pin, Phillips® Pin, Spanner / Snake Eyes®, Ultra-Lok® and Avsafe®. LPF® is constantly researching and testing the newest and best Tamperproof / Security fasteners from around the globe.