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Security fasteners provide an added level of security by their drive design that prevents removal with ordinary screw drivers. Traditional Phillips drive with tamper-resistant pin added for security. Easy to drive & remove with matching tool. Cannot be removed with Phillips Screwdriver.

1/4-20 x 3-1/2&quot; Security Machine Screw - Pan Phillips Head - 18-8 Stainless Steel - Pkg of 50

1-4-20-x-3-1-2-security-machine-screw-pan-phillips-head-18-8-stainless-steel-pkg-of-50

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