Value Collection 86853363 Hex Head Cap Screw 5/16-18 X 2 in Grade 8

Product Description

The VALUE COLLECTION 86853363 is a 5/16-18 x 2-inch hex head cap screw manufactured from Grade 8 steel with a zinc-plated finish. Grade 8 is a high-strength fastener classification rated for demanding structural and mechanical applications where standard-grade hardware is insufficient. The partial threading leaves a smooth shank section under the head, which helps maintain shear strength and proper load distribution across joint interfaces. This screw uses UNC (Unified National Coarse) thread form and measures 2 inches under the head. It is sold in a package of 10 units and is handled primarily by millwrights, maintenance technicians, and general contractors working in industrial or heavy-duty assembly environments.

Grade 8 hex head cap screws are commonly used in automotive, agricultural, construction, and industrial machinery applications where high clamping force and tensile strength are required. The zinc plating provides a basic level of corrosion resistance suitable for indoor and sheltered outdoor installations. Partial threading is typical for through-bolt applications where the smooth shank spans the joint interface. These screws are appropriate for use with standard SAE or Grade 8-rated hex nuts and hardened washers in structural fastening assemblies.

Key Features

• Grade 8 steel construction for high tensile and proof-load strength
• Zinc-plated finish for baseline corrosion resistance
• Partially threaded shank improves shear resistance across joint interfaces
• 5/16-18 UNC thread form for compatibility with standard coarse-thread hardware
• 2-inch length under head suits moderate-depth through-bolt applications
• Packaged in quantities of 10 for small-batch or repair use

Compatibility

Designed for use with standard 5/16-18 UNC coarse-thread hex nuts, coupling nuts, and hardened flat washers in Grade 5 or Grade 8 fastener assemblies across industrial, automotive, and structural applications.

Installation Notes

Installation is performed with a standard hex wrench or socket driver sized for a 5/16-inch hex head cap screw. Torque to the appropriate Grade 8 specification for this diameter as listed in your applicable engineering or equipment service standard. Use hardened washers under the head and nut to prevent embedment into softer base materials. Inspect threads and mating hardware for damage or contamination before assembly.