Value Collection 454097PR Hex Head Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 454097PR is a Grade 8 steel hex head cap screw with a 5/16-18 UNC thread and a 3-3/4 inch length under head. It features partial threading and a zinc yellow dichromate finish, which provides corrosion resistance in demanding environments. Manufactured to ASME B18.2.1 dimensional standards, this fastener is suited for high-strength bolted joint applications where tensile load capacity is a priority. It is driven with a 1/2 inch hex key or standard hex head tooling. Mechanical contractors, millwrights, and maintenance technicians install this type of fastener across structural, equipment mounting, and general industrial assemblies.

This cap screw is appropriate for use in general industrial and mechanical applications requiring a high-strength inch-series fastener. The 5/16-18 coarse thread pattern is widely used in steel fabrication, equipment frames, bracket mounting, and machine assembly. The Grade 8 rating indicates a minimum tensile strength of 150,000 psi, making it appropriate for joints that must resist significant shear and tensile loading. The zinc yellow dichromate finish provides moderate corrosion resistance for indoor and light outdoor service conditions.

Key Features

• Grade 8 steel construction for high tensile and shear strength
• Zinc yellow dichromate finish for corrosion resistance
• Partially threaded shank for precise joint clamping and shear load transfer
• 5/16-18 UNC coarse thread for broad compatibility with standard inch-series nuts and tapped holes
• Conforms to ASME B18.2.1 dimensional standards
• Driven with a 1/2 inch hex wrench or socket

Compatibility

Designed as a standard inch-series hex head cap screw compatible with 5/16-18 UNC tapped holes and standard hex nuts meeting ASME B18.2.1 dimensional requirements.

Installation Notes

Installation is performed by qualified mechanics or maintenance technicians using a 1/2 inch hex socket or wrench. Ensure the mating tapped hole or nut meets 5/16-18 UNC specifications before driving. De-energize and lock out any equipment before accessing fastened assemblies. Do not exceed the rated tensile capacity of the fastener by applying impact force beyond hand-tight plus a controlled torque sequence per applicable mechanical standards.