Hex Head Cap Screws

Hex head cap screws have a hexagonal head and are uniformally threaded for use with a corresponding threaded nut or into a threaded tapped hole. Mainly used in repair or construction projects.

Hex head cap screws have a hexagonal head and are uniformally threaded for use with a corresponding threaded nut or into a threaded tapped hole. Mainly used in repair or construction projects.

Hex head cap screws have a hexagonal head and are uniformally threaded for use with a corresponding threaded nut or into a threaded tapped hole. Mainly used in repair or construction projects.

A grade 8 bolt is stronger than the more commonly used grade 5. It is made of alloy steel and has six radial lines on the top of the bolt head. Grade 8 bolts have a tensile strength of 150,000 pounds per square inch. We recommend using grade 8 nuts, flat washers and high alloy lock washers with any grade 8 bolts / hex cap screws.

Grade 5 Hex Cap Screws are made from medium carbon steel and are used in applications where medium strength is necessary, typically those where controlled clamp force and high loads are required. These screws can be screwed into internally tapped holes or used with a nut. Grade 5 Hex Cap Screws should always be used with a hardened washer under the turned component. SAE J429 covers the material and performance requirements of Grade 5 Hex Cap Screws and ASME B18.2.1 covers the dimensional requirements.