Made from Grade 8 steel, these screws can be used in 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.

About half as strong as medium-strength steel screws, these screws are best for light duty fastening applications, such as securing access panels. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

When a wrench won’t fit, turn these screws with a slotted screwdriver instead. The flange distributes pressure where the screw meets the surface, so you don’t need a separate 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 Grade 5 screws are suitable for fastening most machinery and equipment. Serrations under the head grip the surface of your material to help resist vibration. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.