Value Collection A997501 Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION A997501 is a fully threaded hex socket cap screw used in mechanical assemblies, equipment fabrication, and general fastening applications. Sized at 5/16-18 UNC with a 7/8-inch length under head, this screw accepts a 1/4-inch hex (Allen) drive. Constructed from 18-8 stainless steel, it provides corrosion resistance suitable for wet, outdoor, or chemically exposed environments. It meets ASME/ANSI B18.3 and ASTM F837 standards. Each package contains 25 screws, making it practical for both single repairs and batch installations across a variety of trade applications.

This screw is used in HVAC equipment panels, plumbing fixture mounting, electrical enclosures, and light structural assemblies where corrosion resistance and a clean socket-drive fastener are required. The 5/16-18 UNC thread is a common coarse-thread size found across residential and commercial mechanical equipment. Installers typically reach for this size when securing brackets, access panels, and component mounting plates. The fully threaded shank maximizes thread engagement across thinner materials and shorter grip lengths.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard tapped holes
• 7/8-inch length under head suits thin-to-medium material stacks
• Fully threaded shank maximizes clamping engagement
• 18-8 stainless steel construction resists corrosion in wet and outdoor service
• 1/4-inch hex socket drive for use with standard Allen keys and hex bit drivers
• Meets ASME/ANSI B18.3 and ASTM F837 dimensional and material standards

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw suitable for any tapped hole or fastened joint calling for this thread size and drive type in trade mechanical and equipment-service applications.

Installation Notes

Install and remove using a 1/4-inch hex key or hex bit driver. Ensure the mating tapped hole is clean and free of debris before threading to avoid galling, which is common with stainless fasteners. Apply a small amount of anti-seize compound when fastening stainless into stainless threads to prevent seizing. Torque to the value specified by the equipment manufacturer or applicable assembly drawing.