Value Collection 88548227 5/16-18 X 2 in Hex Cap Screw 50 Pk

Product Description

The VALUE COLLECTION 88548227 is a Grade 5 steel hex head cap screw with a 5/16-18 UNC thread and a 2-inch length under head. Zinc plating provides corrosion resistance for general industrial and mechanical applications. The screw is partially threaded, which allows for a stronger clamping grip in thicker assemblies where the unthreaded shank spans the joint interface. This fastener ships in a pack of 50 units. It is commonly installed by millwrights, maintenance mechanics, HVAC technicians, plumbers, and electricians during equipment assembly, panel mounting, and structural fastening tasks.

This screw is suited for a wide range of light to medium-duty fastening applications in residential, commercial, and light industrial settings. The 5/16-18 UNC thread is one of the most common inch-series thread sizes found in equipment frames, junction boxes, HVAC equipment, pumps, and general mechanical assemblies. The partial threading makes it well suited for through-bolting applications where thread engagement occurs only in the receiving material, keeping the shank smooth through the clamped layers.

Key Features

• 5/16-18 UNC thread for broad compatibility with standard inch-series tapped holes and nuts
• 2-inch length under head to accommodate thicker assemblies and through-bolt installations
• Partially threaded shank for improved clamping force across joint interfaces
• Grade 5 steel construction meets SAE J429 minimum proof load and tensile strength requirements for medium-strength fastening
• Zinc plating provides baseline corrosion resistance for indoor and sheltered outdoor environments
• Pack of 50 reduces per-unit cost for service calls, shop stock, and bulk repairs

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application requiring a 5/16-18 UNC thread with a 2-inch length under head and partial threading.

Installation Notes

Installation does not require specialized tools beyond a standard hex wrench or socket set sized for a 5/16-inch hex head. Always hand-thread fasteners before applying torque to prevent cross-threading. In structural or pressure-boundary applications, consult applicable codes and the equipment manufacturer's torque specifications before final tightening. Zinc-plated fasteners are not rated for submerged, high-humidity, or chemically aggressive environments without additional protective measures.