Grade 8 Steel Cap Screws

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Fastener Strength Grade/Class

SAE Grade 8

Fastener Head Type

Hex

Material

Steel

System of Measurement

Thread Size

Length

Threading

Finish

Corrosion-Resistant Coated

Phosphate Coated

Zinc Flake Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Head Width

Thread Spacing

Thread Direction

Thread Type

Specifications Met

Tensile Strength

100,000 psi or greater

Head Height

Drive Style

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

DFARS Specialty Metals

Color

RoHS

Hardness

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Performance

Tension Indicating

Export Control Classification Number (ECCN)

Locking Type

1,916 Products

About Hex Head Screws and Bolts

Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.

Fasteners

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.

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.

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.

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.

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, Nut, and Washer Assortments

Keep the most common sizes of hex head screws, nuts, and washers on hand.

Flanged Hex Head Screw and Nut Assortments

Keep a variety of flanged screws and nuts on hand so you always have the size you need. The flange distributes pressure where the fastener meets a surface, so you don’t need a separate washer.

Fasteners

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

High-Strength Grade 8 SteelFlanged Hex Head Screws

High-Strength Grade 8 SteelSerrated-Flange Hex Head Screws

High-Strength Grade 8 SteelThread-Locking Hex Head Screws

Tension-Indicating Hex Head Screws

Hex Head Screw, Nut, and Washer Assortments

Flanged Hex Head Screw and Nut Assortments

High-Strength Steel Hex Head
Screws with Material Certification

Left-Hand Threaded High-Strength
Steel Hex Head Screws

High-Strength Grade 8 Steel
Flanged Hex Head Screws

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

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