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

These metric screws help prevent counterclockwise-moving parts from loosening. Use them for medium-strength fastening.

These screws are made to stringent Army-Navy specifications that ensure performance and reliability. They're comparable in strength to Grade 5 steel screws.

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.

When clearance for a wrench is limited, these screws have a Phillips drive so you can install them with a screwdriver. They are used for high-strength fastening.

About half as strong as medium-strength steel screws, these screws can be used for light duty fastening applications, such as securing access panels.

Choose these metric screws for heavy duty stamping applications as well as earth-moving machinery, such as bulldozers and excavators. These screws are 10% stronger than our high-strength metric steel screws.

Choose these screws for their adherence to strict military standards for material and construction. Screws are 18-8 stainless steel for good chemical resistance.

More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water.

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.

Brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance.

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.

More corrosion resistant than 316 stainless steel, nickel alloy screws have excellent resistance to salt water and some acids.

Fiberglass screws are stronger than plastic screws, chemical and oil resistant, nonconductive, and lightweight.

Designed for construction and exterior building applications, these metric screws are often used to join I-beams and scaffolding. Their partial threading leaves an unthreaded portion that is strong enough to stand up to the sideways forces of joints.

These Grade B7 steel screws are nearly twice as strong as our stainless steel screws for high-pressure applications. Also known as pressure bolts, they meet the high-pressure, high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges.

Made from 316 stainless steel, these Grade B8M screws are more corrosion resistant than 18-8 stainless steel screws and have excellent resistance to chemicals and salt water. Screws meet ASTM A193 regulations, so they can be used in high-pressure and high-temperature applications. Also known as pressure bolts.

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.

Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. The flange distributes pressure where the screw meets the surface, eliminating the need for a washer.

Comparable in strength to Grade 9 screws, these are about 20% stronger than high-strength steel screws and often used in heavy duty applications, such as stamping and earth-moving equipment. The flange eliminates the need for a washer.

Install these screws with a wrench or a screwdriver. Made from stainless steel, they have good corrosion resistance. A flange under the head means a separate washer is not necessary.

These screws are chemical and oil resistant, nonconductive, and lightweight. The flange eliminates the need for a washer, distributing pressure where the screw meets the surface.

Choose these metric screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are about 10% stronger than medium-strength steel screws. Their serrated flange helps to resist vibration.

These metric screws are suitable for fastening most machinery and equipment. They have a serrated flange that helps prevent loosening from vibration.

More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water. A serrated flange provides mild vibration resistance.

Made from 18-8 stainless steel, these screws have the best chemical and corrosion resistance of our wire-lockable screws. Wire these screws together for more vibration resistance than other types of hex head screws.

These Class 8.8 steel screws are suitable for fastening most machinery and equipment. They are over 50% stronger than stainless steel thread-locking screws. For vibration resistance, they have a thread locker bonded to the threads.

Also known as Sems screws, these screws have a permanently attached but freely rotating tooth lock washer that bites into the mating surface for vibration resistance.

Choose these screws for their adherence to strict military standards for material and construction.

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening.

Choose these screws for their adherence to strict military standards for material and construction. Screws are 18-8 stainless steel for good chemical resistance.

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. Made from 18-8 stainless steel, these screws have good chemical resistance.

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.

Our most corrosion-resistant metal screws, titanium screws withstand salt water, acids, and chemicals. They have a high strength-to-weight ratio and are about 40% lighter than steel screws.

Bronze screws are about 40% stronger than brass screws and provide more corrosion resistance to salt water, gases, and sewage. They are nonmagnetic and electrically conductive.

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.

More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water. Use these low-profile screws where space is limited.

More corrosion resistant than 18-8 stainless steel screws, these 316 stainless steel screws have excellent resistance to chemicals and salt water. Their ultra-low-profile lets them fit in the tightest spaces.

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.

More corrosion resistant than 18-8 stainless steel screws, these screws have excellent resistance to chemicals and salt water. They have a thread locker to resist vibration.

With a tensile strength of 180,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and more than two and a half times stronger than stainless steel screws with split lock washer. The split lock washer helps to resist vibration.

Stainless steel screws have excellent corrosion resistance in most environments. Wire these screws together for more vibration resistance than other types of socket head screws.

These general purpose flanged screws distribute pressure where the screw meets the surface, eliminating the need for a washer.

A rubber O-ring under the head of these screws prevents leaks and seals out contaminants.

Fasten these screws inside a high-vacuum system without bringing in contaminants.

The nonmarring brass tip is electrically conductive and harder than nylon, but soft enough to conform to most surfaces and reduce damage from metal-on-metal contact.

A freely rotating washer distributes pressure over a wider area than a flange, preventing damage to your material's surface.

These 18-8 stainless steel screws have a hardened steel drill point to penetrate steel and are coated to increase corrosion resistance.

These screws have the strength of 410 stainless steel with added corrosion resistance.

These steel screws are available with corrosion resistant finishes. A rubber-bonded washer compresses to form a watertight seal. They save you time and effort by drilling their own holes and fastening in a single operation.

Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant.

Made from 18-8 stainless steel, these screws have good chemical resistance.

Serrations under the head act as a brake to prevent overtightening and damaging threads.

Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant.

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

These steel screws are zinc plated to resist corrosion in wet environments.

These steel screws are zinc plated to resist corrosion in wet environments.

Also known as pin-in-hex, install and remove these screws with a tamper-resistant hex driver.

These steel screws are zinc plated to resist corrosion in wet environments.

Serrations under the head act as a brake to prevent over tightening and damaging threads.

These screws have a hex head for a secure grip with a wrench.

These steel screws have corrosion-resistant finishes.

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

These 316 stainless steel screws have excellent resistance to chemicals and salt water.

These blue and silver ultra-corrosion-resistant coated steel screws stand up to wet environments.

18-8 stainless steel screws have good chemical resistance.

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

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

Closely spaced threads on these screws fit in holes with a fine pitch. They're not compatible with standard metric threads.

Brass screws are electrically conductive, nonmagnetic, and have good corrosion resistance.

Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws.

With a tamper-resistant hex drive (also known as a pin-in hex drive), these metric screws are difficult to remove without special tools.

These screws are drilled through the shaft to vent fluids and gases trapped under the screw.

Tighten these metric screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion.

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

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

As strong as alloy steel and about 40% lighter, these metric titanium screws are known for their high strength-to-weight ratio. They stand up to salt water, acids, and chemicals.

Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer.

These metric 316 stainless steel screws resist corrosion from chemicals and salt water better than 18-8 stainless steel screws. They have a flange that distributes pressure across a wide surface, eliminating the need for a separate washer. Screws may be mildly magnetic.

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

These metric 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. The flange is wider and thicker than our other flanged screws, so they distribute pressure the best.