More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They may be mildly magnetic. Length is measured from under the head.

Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Screws that meet ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.

For technical drawings and 3-D models, click on a part number.

Made of alloy steel, these low-profile screws are nearly twice as strong as their stainless steel counterparts. With half the height of a standard socket head, these low-profile screws fit in tight spaces, but are weaker than standard socket heads. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws have a zinc outer layer that protects the steel under it from rust, extending the life of the screw.

Class 8.8 steel screws are medium-strength, so they’re strong enough for use with most machinery and equipment. Class 10.9 steel screws are high-strength—they are at least 25% stronger than Class 8.8. Use them for high-stress applications such as valves, pumps, and automotive suspensions.

Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. DIN screws meet international standards for materials and dimensions.

Tighten DIN 6912 screws with DIN 6911 L-keys—these screws have a recess that matches the extended tip of those L-keys. DIN 6911 L-keys grip these screws snugly so you can install them in difficult-to-reach areas with just one hand. You can also install DIN 6912 screws with standard L-keys, but they won’t grip the screws as securely.

For technical drawings and 3-D models, click on a part number.