Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

High-Strength Grade 8 Steel 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 at least 25% stronger than medium-strength steel screws.

High-Strength Metric Class10.9 Steel Hex Head Screws

Choose these Class 10.9 steel screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws.

High-Strength Steel Hex HeadScrews with Phillips Drive

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.

Mil. Spec. High-Strength Steel Hex Head 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.

High-Strength Steel Hex HeadScrews with Material Certification

These screws come with a traceable lot number and a physical and chemical test report. Use them for high-strength fastening.

Left-Hand Threaded High-StrengthSteel Hex Head Screws

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.

Medium-Strength Grade5 Steel Hex Head Screws

Twice as strong as low-strength steel screws, these Grade 5 screws are suitable for fastening most machinery and equipment.

Medium-Strength Metric Class8.8 Steel Hex Head Screws

Twice as strong as low-strength steel screws, these metric Class 8.8 steel screws can be used to fasten most machinery and equipment.

Mil. Spec. Medium-StrengthSteel Hex Head Screws

Choose these screws for their adherence to strict military standards for material and construction. Use them to fasten most machinery and equipment.

Army-Navy Medium-StrengthSteel Hex Head Screws

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

JIS Medium-Strength Steel Hex Head Screws

Made to Japanese Industrial Standards, these Class 8.8 steel screws are good for fastening most machinery and equipment.

Left-Hand Threaded Medium-StrengthMetric Class 8.8 Steel Hex Head Screws

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

Left-Hand Threaded Medium-StrengthGrade 5 Steel Hex Head 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.

Low-Strength Steel Hex Head Screws

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

Extreme-Strength Grade9 Steel Hex Head Screws

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.

Extreme-Strength Metric Class12.9 Steel Hex Head Screws

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.

18-8 Stainless Steel Hex Head Screws

The standard choice for fastening in wet and outdoor conditions. Made of 18-8 stainless steel, these screws resist corrosion from mild chemicals and water.

Left-Hand Threaded 18-8Stainless Steel Hex Head Screws

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.

Super-Corrosion-Resistant 316Stainless Steel Hex Head Screws

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

Super-Corrosion-Resistant High-StrengthBumax 88 Hex Head Screws

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.

High-Strength 17-4 PH StainlessSteel Hex Head Screws

With the strength of steel and the corrosion resistance of 18-8 stainless steel, these 17-4 PH stainless steel screws are suitable for high-strength fastening in corrosive environments.

Stainless Steel Hex Screwand Nut Kits for Pipe Flanges

Join standard-sized stainless steel and aluminum pipe flanges in corrosive conditions.

Stainless Steel Heavy Hex Screwand Nut Kits for Pipe Flanges

Connect standard-size stainless steel pipe flanges with these kits—they come with screws and nuts in the right size and number to match the bolt holes. The screw heads are 10% wider than a standard hex head, so they spread force over a larger area, and you can tighten with more torque.

Hex Head Screw, Nut, and WasherKits for Plastic Pipe Flanges

Use these kits to connect plastic pipe flanges—they’re sized for Class 150 flanges made to ASME B16.5 dimensions. They come with screws, nuts, and washers that match the size and number of bolt holes for each pipe size.

Steel Hex Screw and Nut Kits for Pipe Flanges

Connect standard-sized steel and cast iron pipe flanges. These kits come with the right size and number of screws and nuts for the bolt holes in each pipe size.

Steel Heavy Hex Screw andNut Kits for Pipe Flanges

Join standard-sized steel and cast iron pipe flanges—these kits come with the screws and nuts in the right size and number to match the bolt holes. The screw heads and nuts are 10% wider than standard hex fasteners, so they spread force over a larger area, and you can tighten with more torque.

Plastic Hex Head Screws

Made from plastic, these screws are chemical and oil resistant, nonconductive, and lightweight.

Brass Hex Head Screws

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

Aluminum Hex Head Screws

Aluminum screws are one-third the weight of steel and have good corrosion resistance.

Titanium Hex Head Screws

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

Bronze Hex Head Screws

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.

Nickel Alloy Hex Head Screws

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

Fiberglass Hex Head Screws

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

Ceramic Hex Head Screws

Ceramic screws won't melt, rust, seize, or become brittle—even at extreme temperatures. They are nonconductive and highly resistant to corrosive gases.

Medium-Strength Steel Heavy HexHead Screws for Structural Applications

The most common heavy hex head screw, these steel screws meet ASTM A325 regulations for structural joints, such as mating I-beams and scaffolding.

Metric High-Strength Steel Heavy HexHead Screws for Structural Applications

Designed for construction, these metric screws are often used to join I-beams and scaffolding. They’re Class 10.9 steel, which is at least 25% stronger than medium-strength steel.

High-Strength Steel Heavy Hex HeadScrews for Structural Applications

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.

18-8 Stainless Steel Heavy Hex HeadScrews for High-Pressure Applications

These Grade B8 screws are made from 18-8 stainless steel and have good chemical resistance. Also known as pressure bolts, they meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges.

Super-Corrosion-Resistant 316Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Made from 316 stainless steel, these Grade B8M screws are more corrosion resistant than 18-8 stainless steel screws. Also known as pressure bolts, these screws meet the high-pressure and high-temperature regulations of ASTM A193.

Steel Heavy Hex Head Screwsfor High-Pressure Applications

Made of Grade B7 steel, these screws are nearly twice as strong as Grade B8 and Grade B8M stainless steel screws. Also known as pressure bolts, they meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges.

Steel Heavy Hex Head Screwsfor Low-Temperature Applications

Made from Grade L7 steel, these screws don’t become brittle in the cold, so they stand up to impact even at temperatures as low as -150° F.

High-Strength Grade 8 SteelFlanged 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 at least 25% stronger than medium-strength steel screws. The flange distributes pressure over the surface, eliminating the need for a washer.

High-Strength Metric Class 10.9Steel Flanged Hex Head Screws

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.

JIS High-Strength SteelFlanged Hex Head Screws

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 distributes pressure where the screw meets the surface, eliminating the need for a separate washer.

Medium-Strength Metric Class 8.8Steel Flanged Hex Head Screws

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.

Medium-Strength Grade 5 SteelFlanged Hex Head Screws

Twice as strong as low-strength steel screws, these Grade 5 screws are suitable for fastening most machinery and equipment. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Extreme-Strength SteelFlanged Hex Head Screws

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.

Low-Strength Steel Flanged HexHead Screws with Phillips Drive

When there’s not enough room to turn these screws with a wrench, slip a screwdriver into their Phillips drive. About half as strong as medium-strength steel screws, they’re best for light duty fastening applications, such as securing access panels. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Low-Strength Steel Flanged HexHead Screws with Slotted Drive

When there’s not enough room to turn these screws with a wrench, slip a screwdriver into their slotted drive. They’re about half as strong as medium-strength steel screws—use them for light duty fastening applications, such as securing access panels. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Low-Strength Steel Flanged Hex Head Screws

About half as strong as medium-strength steel screws, these screws are best for light duty fastening applications, such as securing access panels. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Stainless Steel Flanged Hex Head Screws

Made from 18-8 stainless steel, these screws have good chemical resistance. A flange under the head distributes pressure over the surface, eliminating the need for a washer.

Stainless Steel Flanged HexHead Screws with Slotted Drive

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.

Extreme-Strength StainlessSteel Flanged Hex Head Screws

For strength comparable to that of Grade 9 steel and the corrosion resistance of stainless steel, choose these screws. They are work-hardened for extreme strength. The flange eliminates the need for a separate washer.

Stainless Steel Flanged HexHead Screws with Phillips Drive

When a wrench won’t fit, turn these screws with a Phillips screwdriver instead. Made of 18-8 stainless steel, they resist corrosion from mild chemicals and water. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Fiberglass Flanged Hex Head Screws

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.

Brass Flanged Hex Head Screws

Made of brass, these screws are electrically conductive, nonmagnetic, and corrosion resistant. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer.

Medium-Strength Grade 5 SteelSerrated-Flange Hex Head Screws

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

Medium-Strength Metric Class 8.8 SteelSerrated-Flange Hex Head Screws

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

High-Strength Metric SteelSerrated-Flange Hex Head Screws

Choose these screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Serrations under the head grip the surface of your material to help resist vibration.

High-Strength Grade 8 SteelSerrated-Flange Hex Head Screws

Made from Grade 8 steel, these screws are at least 25% stronger than medium-strength steel screws. They can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. Serrations under the head grip the surface of your material to help resist vibration.

Low-Strength Steel Serrated-FlangeHex Head Screws with Phillips Drive

When there’s not enough room to turn these screws with a wrench, slip a screwdriver into their Phillips drive. About half as strong as medium-strength steel screws, they’re best for light duty fastening applications, such as securing access panels. Their flange is serrated to help prevent loosening from vibration.

18-8 Stainless SteelSerrated-Flange Hex Head Screws

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

Super-Corrosion-Resistant 316 StainlessSteel Serrated-Flange Hex Head Screws

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.

Extra-Wide Serrated-Flange Hex Head Screws

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.

Cotter Pin-Lockable Hex Head Screws

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.

High-Strength Grade 8 SteelThread-Locking 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.

Medium-Strength Metric Class 8.8 SteelThread-Locking 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.

Stainless Steel Thread-Locking Hex Head Screws

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

Steel Wire-Lockable Hex Head Screws

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.

Stainless Steel Wire-Lockable Hex Head Screws

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.

Low-Strength Steel Hex HeadScrews with Lock Washer

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.

Tight-Spot Hex Head Screws

A high-strength alternative to blind rivets, use these screws when only one side of the material is accessible.

Hex Head Screws with Flat Washer

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

Sealing Hex Head Screws

An O-ring under the head prevents leaks and seals out contaminants.

Sanitary Hex Head Screws

Bolt down equipment in food processing or sanitary areas while keeping out contaminants.

Vented Hex Head Screws

Drilled through the head and shaft, these screws vent fluid and gases trapped below the screw, making them good for vacuum applications.

18-8 Stainless Steel Hex HeadScrews with Nuts and Washers

Everything you need to make a complete joint in wet and outdoor conditions. These screws come with compatible nuts and washers. Made of 18-8 stainless steel, they resist corrosion from mild chemicals and water.

Medium-Strength Grade 5 Steel HexHead Screws with Nuts and Washers

Twice as strong as low-strength steel screws, these Grade 5 screws are suitable for fastening most machinery and equipment. They come with matching nuts and washers so you can make a complete joint.

Medium-Strength Class 8.8 Steel HexHead Screws with Nuts and Washers

Keep compatible screws, nuts, and washers on hand to make a strong joint. Twice as strong as low-strength steel screws, these Class 8.8 steel screws can be used to fasten most machinery and equipment.

Tension-Indicating Hex Head Screws

An indicator dot changes from red to black when the screw is properly tightened. If it comes loose, the dot changes back to red.

Hex Head Screw Assortments

These assortments include hex head screws and hex nuts.

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws