SAE Standard Hex Head Screws

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About Hex Head Screws and Bolts

Medium-Strength Grade 5 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 Class
8.8 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.

Left-Hand Threaded Medium-Strength
Grade 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.

High-Strength Grade 8 Steel Hex Head Screws

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 Head
Screws 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-Strength
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 high-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.

High-Strength Metric Class 10.9
Steel 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.

High-Strength Grade 8 Steel
Flanged 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 where the screw meets the surface, so you don’t need a separate washer.

Medium-Strength Grade 5 Steel
Flanged 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.

Low-Strength Steel Flanged Hex
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. 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 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.

Medium-Strength Grade 5 Steel
Serrated-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.

High-Strength Grade 8 Steel
Serrated-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-Flange
Hex 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.

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.

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.

High-Strength Grade 8 Steel
Thread-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 Grade 5 Steel Hex
Head 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.

Tapping, Wood, and Drywall Screws

Steel Hex Head Thread-Cutting Screws for Metal

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

Steel Hex Head Screws for Wood

These steel screws have corrosion-resistant finishes.

High-Strength A286 Stainless Steel Socket Head Screws

High-Strength A286 Stainless
Steel Socket Head Screws

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.

About Hex Head Screws and Bolts

Hex Head Screws

Medium-Strength Grade 5 Steel Hex Head Screws

Medium-Strength Metric Class8.8 Steel Hex Head Screws

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

High-Strength Grade 8 Steel Hex Head Screws

Mil. Spec. High-Strength Steel Hex Head Screws

High-Strength Steel Hex HeadScrews with Material Certification

Left-Hand Threaded High-StrengthSteel Hex Head Screws

Low-Strength Steel Hex Head Screws

High-Strength Metric Class 10.9Steel Flanged Hex Head Screws

High-Strength Grade 8 SteelFlanged Hex Head Screws

Medium-Strength Grade 5 SteelFlanged Hex Head Screws

Low-Strength Steel Flanged HexHead Screws with Phillips Drive

Low-Strength Steel Flanged HexHead Screws with Slotted Drive

Low-Strength Steel Flanged Hex Head Screws

Medium-Strength Grade 5 SteelSerrated-Flange Hex Head Screws

High-Strength Grade 8 SteelSerrated-Flange Hex Head Screws

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

Extra-Wide Serrated-Flange Hex Head Screws

Steel Wire-Lockable Hex Head Screws

High-Strength Grade 8 SteelThread-Locking Hex Head Screws

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

Tapping, Wood, and Drywall Screws

Steel Hex Head Thread-Cutting Screws for Metal

Steel Hex Head Screws for Wood

High-Strength A286 Stainless Steel Socket Head Screws

High-Strength A286 StainlessSteel Socket Head Screws

Medium-Strength Metric Class
8.8 Steel Hex Head Screws

Left-Hand Threaded Medium-Strength
Grade 5 Steel Hex Head Screws

High-Strength Steel Hex Head
Screws with Material Certification

Left-Hand Threaded High-Strength
Steel Hex Head Screws

High-Strength Metric Class 10.9
Steel Flanged Hex Head Screws

High-Strength Grade 8 Steel
Flanged Hex Head Screws

Medium-Strength Grade 5 Steel
Flanged Hex Head Screws

Low-Strength Steel Flanged Hex
Head Screws with Phillips Drive

Low-Strength Steel Flanged Hex
Head Screws with Slotted Drive

Medium-Strength Grade 5 Steel
Serrated-Flange Hex Head Screws

High-Strength Grade 8 Steel
Serrated-Flange Hex Head Screws

Low-Strength Steel Serrated-Flange
Hex Head Screws with Phillips Drive

High-Strength Grade 8 Steel
Thread-Locking Hex Head Screws

Medium-Strength Grade 5 Steel Hex
Head Screws with Nuts and Washers

High-Strength A286 Stainless
Steel Socket Head Screws