These metric screws 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.

These metric stainless steel 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.

These metric screws have a washer with sharp internal teeth that dig into surfaces to resist large amounts of vibration. The smooth outside edge of the washer provides a finished look. Also known as Sems screws, the washer rotates freely but is permanently attached.

Made from stainless steel, these metric 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.

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.

The flat washer distributes holding pressure and protects delicate surfaces from damage while the split lock washer adds tension to prevent loosening from small amounts of vibration.

When compressed, the split lock washer flattens to add tension and prevent loosening from small amounts of vibration. Also known as Sems screws, the washer rotates freely but is permanently attached.

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

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

The epoxy adhesive on the threads provides twice the holding power of standard thread-locking screws, but requires time to harden.

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.

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.

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.

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.

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

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.

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 more than twice as strong as our stainless steel thread-locking screws. The thread locker helps resist loosening from vibration.

Made from 18-8 stainless steel, these screws have good chemical resistance. They have a thread locker to prevent loosening from vibration.

Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Serrations under the flange provide mild vibration resistance.

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.

Made from 18-8 stainless steel, these screws have good chemical resistance. Their flange is serrated to help prevent loosening from vibration.

These screws have a flange that's at least 10% larger than a standard flange for more gripping power. Serrations under the head provide mild vibration resistance.

These 18-8 stainless steel set screws are chemical resistant. They have a nylon locking patch that grips threads to resist loosening.

Made from alloy steel, these metric set screws have a thin edge that digs into hard surfaces for a secure hold. They have a nylon locking patch that grips threads to resist loosening.

Made from 18-8 stainless steel, these set screws are chemical resistant. They have serrations on the cup edge that grip the material surface to resist loosening.

Made from black-oxide alloy steel, these set screws resist corrosion in dry environments. They dig into hard surfaces for a secure hold and have serrations on the cup edge that grip the material surface to resist loosening.

Also known as jam set screws, these lock other screws in place, hold pins, and adjust spring tension. A black-oxide finish provides corrosion resistance in dry environments.

A nylon locking patch grips threads to resist loosening.

Press these rounded head nuts into a closed-end hole or thick panel in applications where the back of the panel is inaccessible. A quarter-turn locks and releases access panels, doors, and covers.

Press these wing head nuts into the backside of a panel in applications where you have access to both sides of the panel. A quarter-turn locks and releases access panels, doors, and covers.

Rivet these wing head nuts into thin panels for a flush fit. They can be mounted without space between panels. A quarter-turn locks and releases access panels, doors, and covers.

These wing-head screws have a clip-on nut that allows you to mount them near the edge of a thin panel. Use them to lock and release access panels, doors, and covers with a quarter-turn.

Install these socket head screws through a hole and thread on a retainer to keep secure—no special tools are required.

Install in soft material such as aluminum and low-carbon steel at least 0.036" thick with an arbor press or similar pressure tool.

Snap these screws into panels up to 0.125" thick—no tools are required for installation.

An expanding rubber bushing damps vibration while holding panels together.

Shorter than shoulder screws for use in thin material.

Use these barrels with a screw you already have or pair with a different type of screw to create a custom fastener. They're zinc plated to resist corrosion in wet environments.

Use these barrels with a screw you already have or pair with a different type of screw to create a custom fastener. Made from 316 stainless steel, they have excellent chemical resistance and can be used in saltwater environments.

Pair these screws with a barrel you already have or couple with a different barrel to create a custom fastener. Made from 18-8 stainless steel, they are chemical resistant.

Use these barrels with a screw you already have or pair with a different type of screw to create a custom fastener. Made from 18-8 stainless steel, they are chemical resistant.

An unthreaded barrel allows quick assembly with a press or a hammer.

Stainless steel binding barrels and screws have excellent corrosion resistance in most environments.

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

These barrels and caps are corrosion resistant in wet environments.

Install in a cutout to create a secure joint between boards, butcher blocks, and countertops.

Angled under the head for a flush finish in countersunk holes.

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

Brass binding barrels and screws are corrosion resistant in wet environments and electrically conductive.

A tamper-resistant Torx driver is required for installation and removal.

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

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

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

A locking element on the threads adds friction to resist loosening. Comparable to Grade 8 steel, these alloy steel shoulder screws are the strongest we offer.

About half the strength of medium-strength bolts, these Grade 2 bolts are for light duty fastening. These bolts are commonly used in tight spaces with moving parts, such as grain elevators and other belting systems, because the smooth, low-profile head provides a flush fit when installed. The square neck keeps these bolts from turning when tightening a nut.

Ribs under the head dig into the surface of soft metal and plastic to keep these bolts from turning when tightening a nut. Commonly used in tight spaces with moving parts, such as grain elevators and other belting systems, elevator bolts have a smooth, low-profile head that provides a flush fit when installed.

The thicker, domed head on these bolts provides greater wear resistance than flat head plow bolts. The underside of the head is angled to sit flush within countersunk holes for use on heavy equipment, such as plows. The square neck keeps these bolts from turning when tightening a nut.

The strongest key-locking inserts we offer, these inserts are made to stringent military specifications.

These inserts are made to stringent military specifications.

A black-phosphate finish provides mild corrosion resistance.

These inserts are the most corrosion-resistant thread-locking inserts we offer.

A closed-end tap, drill bit, and installation bit are included with these inserts.

Made of Nitronic 60 stainless steel, these inserts prevent the screw from binding or sticking without any coating or lubricant that could contaminate particle-free environments.

A dry film keeps the screw from sticking or binding in these inserts during installation.

These inserts have a high strength-to-weight ratio and resist acids and salt water better than nickel alloy and stainless steel inserts.

A distorted thread grips the screw to resist loosening.

Without a prong to break off and retrieve, these inserts are often used where debris could cause damage.

Kits include helical inserts, a tap, and an installation tool.

Inserts come with a through-hole tap and installation tool.

The tapered shape makes it easier to guide these inserts into a hole during installation. Use a drill bit to create a straight hole, then taper the top half.

With the male threaded end on these inserts, mount components directly to plastic parts.

These 18-8 stainless steel inserts have better corrosion resistance than aluminum inserts and may be mildly magnetic.

These 18-8 stainless steel inserts have better corrosion resistance than brass inserts and may be mildly magnetic.

Made from brass, these inserts are electrically conductive, nonmagnetic, and have good corrosion resistance.

These 18-8 stainless steel inserts have better corrosion resistance than brass inserts and may be mildly magnetic.

The barbed sides keep these securely in place even before a screw is installed.

The most corrosion resistant tee nut inserts we offer, these inserts stand up to chemicals and salt water.

These 18-8 stainless steel tee nut inserts have better corrosion resistance than zinc-plated steel tee nut inserts.

Ridges on the barrel of these inserts make them less likely to split hardwood than inserts with prongs. They're often used in wood that has been cut across the growth rings.

Hooked prongs give these inserts excellent holding power even when removing screws.