Use these Class 10.9 steel screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Made from 18-8 stainless steel, these screws have good chemical resistance. A flange under the head distributes pressure over the surface, eliminating the need for a washer.

One-third the weight of steel screws, these aluminum screws also resist corrosion from salt water and mild chemicals. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Twice as strong as low-strength steel screws, these Class 8.8 steel screws can be used to fasten most machinery and equipment. Serrations under the head grip the surface of your material to help resist vibration.