The standard for high-strength fastening.

Often used to fasten parts in engines and turbines, these are our strongest stainless steel screws. They are comparable in strength to alloy steel with the corrosion resistance of 18-8 stainless steel.

Plastic screws are chemical and oil resistant, nonconductive, and lightweight.

These screws have good chemical resistance. A thread locker bonded to the threads prevents loosening from vibration.

With a tensile strength of 170,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and are nearly two and a half times stronger than stainless steel thread-locking screws. They have a thread locker to prevent loosening from vibration.

With a tensile strength of 170,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and are more than twice as strong as stainless steel wire-lockable screws. These resist vibration better than any other socket head screw.

Seal out contaminants and prevent leaks—a rubber O-ring under the head prevents leaks and seals out contaminants.

The nylon patch bonded to the threads of these socket head screws adds friction to keep vibration from loosening them, while their O-ring prevents leaks and seals out contaminants.

18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic.

18-8 stainless steel pan head screws have good chemical resistance and may be mildly magnetic.

These steel pan head screws are coated for corrosion resistance.

Nylon pan head screws are chemical and oil resistant, nonconductive, and lightweight. Exposure to moisture may cause them to expand.

Reliable in harsh environments up to 500° F, PEEK screws withstand acids, bases, and salt solutions. They are chemical and oil resistant, nonconductive, and lightweight.

Our most corrosion-resistant screws, these titanium pan head screws withstand salt water, acids, and chemicals. They have a high strength-to-weight ratio.

More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. The extra-wide truss head distributes holding pressure to reduce the likelihood of crushing thin material. Screws may be mildly magnetic.

Stainless steel screws have excellent corrosion resistance in most environments.

18-8 stainless steel pan head screws have good chemical resistance and may be mildly magnetic.

These pan head screws are zinc plated for corrosion resistance in wet environments.

These metric PTFE screws withstand harsh chemicals and temperatures from -100° F to 500° F. They are nonconductive, lightweight, and resist wear due to their slippery surface.

Made from brass, these screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.

More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water.

One-third the weight of steel, aluminum screws resist corrosion in wet environments.

More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water.

Brass screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.

Brass screws are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.

When head height is important, these screws fit into spaces where other wide head screws won't fit. Also known as shutter screws, their ultra-wide truss head distributes the load over a large area for excellent holding pressure.

18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. A Torx drive has more points of contact than other drives, allowing you to tighten the screw without damaging the recess.

The Torx or Torx-Plus drive on these metric screws have more points of contact than other drives, allowing you to tighten them without damaging the recess.

A286 stainless steel screws have comparable strength to alloy steel with the corrosion and chemical resistance of 18-8 stainless steel. They have a Torx drive that has more points of contact than other drives, allowing you to tighten the screw without damaging the recess.

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

Made from stainless steel, these screws are chemical resistant and may be mildly magnetic.

18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. The flange distributes pressure across a wide surface, eliminating the need for a separate washer.

These stainless steel screws have good chemical resistance and may be mildly magnetic. The washer has sharp internal teeth that dig into surfaces to resist large amounts of vibration while the smooth outside edge provides a finished look. Also known as Sems screws, the washer rotates freely but is permanently attached.

Sharp internal teeth dig into surfaces to resist large amounts of vibration, while the smooth outside edge provides a finished look. Also known as Sems screws, the washer rotates freely but is permanently attached.

Made from stainless steel, these screws have good chemical resistance and may be mildly magnetic. All have a washer with sharp external teeth that dig into surfaces for maximum holding power and vibration resistance. Also known as Sems screws, the washer rotates freely but is permanently attached.

The washer on these screws has sharp external teeth that dig into surfaces for maximum holding power and vibration resistance. Also known as Sems screws, the washer rotates freely but is permanently attached.

These metric stainless steel screws have good chemical resistance and may be mildly magnetic. A curved washer protects delicate surfaces while providing constant tension. Also known as Square Cone Sems screws, the washer rotates freely but is permanently attached.

A zinc plating provides mild corrosion resistance.

Stainless steel screws have excellent corrosion resistance in most environments.

Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. A nylon patch bonded to the threads adds friction to prevent loosening from vibration.

These 18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. The tamper-resistant Torx drive (also known as a pin-in Torx drive) makes them difficult to remove without special tools.

Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. Their tamper-resistant Torx drive (also known as a pin-in Torx drive) makes them difficult to remove without special tools.

A tamper-resistant drilled spanner drive makes these screws difficult to remove without special tools. They're 18-8 stainless steel for good chemical resistance and may be mildly magnetic.

These 18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. The tamper-resistant hex drive (also known as a pin-in hex drive) makes them difficult to remove without special tools.

Stainless steel screws have excellent corrosion resistance in most environments.

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.

Choose these screws for their adherence to strict military standards for material and construction. Their high tensile strength means they can be used in demanding, high-stress applications.

Choose these metric screws for fastening most machinery and equipment. They are twice as strong as low-strength steel screws.

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. For use in medium-strength fastening applications.

Use these general purpose 18-8 stainless steel screws for a variety of fastening applications. They have good chemical resistance.

Choose these screws for their excellent corrosion resistance—comparable to 316 stainless steel—and the strength of steel. Use them for high-strength fastening in chemical and marine applications.

Use these kits to connect standard-size stainless steel pipe flanges for ANSI Class 150 or 300.

Bronze screws are 30% stronger than brass screws and provide more corrosion resistance to salt water, gases, and sewage. They are nonmagnetic and electrically conductive.

These metric screws are at least 25% stronger than medium-strength steel screws. Use them in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. The flange distributes pressure where the screw meets the surface, so there's no need for a washer.

These Grade 5 steel screws are over 70% stronger than our stainless steel wire-lockable hex head screws. Wire these screws together through the hole in the head to get more vibration resistance than any other screw.

More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They may be mildly magnetic.

These screws have good chemical resistance and may be mildly magnetic.

These steel screws have a zinc plating for mild corrosion resistance.