1/4-20 x 1-1/2 One-Way Round Security Machine Screws

These 1/4-20 x 1-1/2 One-Way Round Security Machine Screws from Midwest are designed for applications requiring tamper resistance and reliable fastening. Featuring a slotted one-way head, they allow installation with a standard flat screwdriver but resist removal, making them ideal for security-sensitive environments. The smooth, rounded head offers a clean, finished appearance while providing a broad bearing surface for secure fastening.

Constructed from strong carbon steel with a bright zinc plating, these screws deliver dependable corrosion resistance suitable for indoor and light-duty outdoor use. Their deep, aggressive threads enable fast installation and firm holding power in sheet metal, thin materials, or pre-tapped holes. Commonly used to secure access panels or equipment where preventing unauthorized removal is critical, these one-way round security machine screws offer peace of mind and enhanced protection without the need for specialized tools.