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Twice as strong as low-strength steel screws, these screws are suitable for fastening most machinery and equipment.
Choose these metric screws for fastening most machinery and equipment. They are twice as strong as low-strength steel screws.
Choose these screws for their adherence to strict military standards for material and construction. Use them to fasten most machinery and equipment.
These metric screws help prevent counterclockwise-moving parts from loosening. Use them for medium-strength fastening.
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.
These screws are made to stringent Army-Navy specifications that ensure performance and reliability. They're comparable in strength to Grade 5 steel screws.
These screws are made to Japanese Industrial Standards. They are suitable for fastening most machinery and equipment.
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 metric screws for high-strength fastening. Often used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems, these screws 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.
These screws come with a traceable lot number and a physical and chemical test report. Use them for high-strength fastening.
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.
Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. For use in high-strength fastening applications.
About half as strong as medium-strength steel screws, these screws can be used for light duty fastening applications, such as securing access panels.
These screws are the strongest we offer. They are about 20% stronger than high-strength steel screws and are often used in heavy duty applications such as stamping and earth-moving equipment.
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.
The most common heavy hex head screw, these steel screws meet ASTM A325 regulations for structural joints, such as mating I-beams and scaffolding.
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.
50% stronger than our medium-strength steel heavy hex head screws, these screws meet ASTM A490 specifications for structural applications. Use them in joints that require more tensile strength than ASTM A325 screws.
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 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 over the surface, eliminating the need for a washer.
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 to Japanese Industrial Standards, these Class 10.9 steel 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 eliminates the 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.
Choose these metric screws for fastening most machinery and equipment. With a flange distributing pressure where the screw meets the surface, there is no need for a separate 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.
About 20% stronger than medium-strength steel screws, these Grade 8 steel screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. 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 Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Serrations under the flange provide mild vibration resistance.
These metric screws are suitable for fastening most machinery and equipment. They have a serrated flange that helps 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 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.
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.
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.
Place a cotter pin through the hole in the shank to keep a nut from loosening. These screws have a stronger hold than screws with thread lockers or lock washers.
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.
A high-strength alternative to blind rivets, use these screws when only one side of the material is accessible.
An indicator dot changes from red to black when the screw is properly tightened. If it comes loose, the dot changes back to red.
The standard for high-strength fastening.
Choose these screws for their adherence to strict military standards for material and construction.
These screws are specially tempered to meet ASTM A193 specifications for temperatures up to 1100° F.
Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening.
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.
Made from alloy steel, these screws are nearly twice as strong as stainless steel low-profile screws. With a head height one-third the size of a standard socket head, they fit in the tightest spaces.
These general purpose flanged screws distribute pressure where the screw meets the surface, eliminating the need for a washer.
Serrations under the head grip the material's surface for mild vibration resistance. The flange distributes pressure across the material's surface, eliminating the need for a washer.
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.
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.
A freely rotating washer distributes pressure over a wider area than a flange, preventing damage to your material's surface.
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.
Nonconductive and softer than brass, the nylon tip reduces vibration and eliminates damage from metal touching metal.
Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws.
These steel screws have corrosion-resistant finishes.
These 18-8 stainless steel screws have a hardened steel drill point to penetrate steel and are coated to increase corrosion resistance.
410 stainless steel is strong, wear resistant, and mildly chemical resistant.
These screws have the strength of 410 stainless steel with added corrosion resistance.
Cutting their own pilot hole and threads as you fasten them into material, these metric screws have a drilling tip.
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.
These steel screws have a head encapsulated by 18-8 stainless steel.
Known for their strength, these alloy steel screws are coated to provide corrosion resistance in wet environments.
Serrations under the head act as a brake to prevent overtightening and damaging threads.
These steel screws are zinc plated to resist corrosion in wet environments.
The green color identifies these as grounding screws. They have a flange that provides a wide flat surface for making solid electrical connections.
Able to penetrate overlapping sheets, these screws have a secure hold in wood.
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 metric screws have a triangular shank that presses tightly as it forms threads, so screws resist loosening in soft metals such as brass, aluminum, and copper.
Also known as Tap-Flex screws, these are made from hardened steel to penetrate hard material. They have a five-edged shank that presses tightly against the material to form threads and resist loosening.
Drive the pointed tip of these screws into soft material, such as wood and drywall. They are also known as lag bolts.
These steel screws are hot-dipped galvanized to resist corrosion in wet environments.
Also known as Tapcons, use these screws in applications requiring high strength.
These blue and silver ultra-corrosion-resistant coated steel screws stand up to wet environments.
Press threads into plastic to create a strong hold. Use a wrench, hex socket bit, or nutdriver to securely grip the hex head and tighten these screws.
18-8 stainless steel screws have good chemical resistance.
These metric alloy steel screws are nearly twice as strong as stainless steel button head screws.
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 alloy steel 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.
Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws.
Comparable in strength to Grade 8 steel. These screws have inch thread sizes.
Comparable to Class 12.9 steel.
Use these screws in thin materials; they have a shorter threaded portion than our standard shoulder screws. They’re comparable in strength to Grade 8 steel.
With threads the same diameter as the shoulder, these inch-sized screws can handle heavy loads. They’re comparable to Grade 8 steel.
The metric-sized threads on these screws are the same diameter as the shoulder. Comparable in strength to Class 12.9 steel.
These shoulder screws come with a traceable lot number and material test report. Similar in strength to Grade 8 steel.
Also known as wheel and axle bolts, these metric screws have an unthreaded shoulder that acts as a shaft, so material attached to the threaded end can rotate.
A zinc plating provides mild corrosion resistance.
The head height of these screws is about two-thirds the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.
These metric screws have a head height that's about two-thirds the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines.
These have a head height about one-third the head height of a standard shoulder screw.
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.
Available in metric sizes, these screws have a locking element on the threads that adds friction to resist loosening. Comparable to Grade 8 steel, they are the strongest screws we offer.
Comparable to Grade 8 steel, these screws are the strongest precision shoulder screws we offer.
These assortments include hex head screws and hex nuts.
Drilling screws save you time and effort by drilling their own holes and fastening metal up to 0.500" thick in a single operation.
Also known as Tapcons, these screws are often used to anchor parts to concrete, block, and brick. Assortments include a drill bit.
Flat head screws are angled under the head to fit flush within countersunk holes.
These assortments include button head screws.
Shoulder screws have a cylindrical shoulder under the head that allows parts to rotate around or slide along its length. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment.
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects.