These metric 316 stainless steel screws resist corrosion from chemicals and salt water better than 18-8 stainless steel screws. They may be mildly magnetic.

Made from polycarbonate, these metric pan head screws resist breaking in high-impact applications. They are chemical and oil resistant, nonconductive, and lightweight.

These metric screws have a Torx drive for more points of contact than other drives, allowing you to tighten the screw without damaging the recess.

As you tighten these metric screws, the split lock washer flattens to add tension and prevent loosening from small amounts of vibration. Also known as Sems screws, the washer rotates freely but is permanently attached.

These metric screws have a silicone O-ring that prevents leaks and seals out contaminants. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.