Value Collection R68439944 Hex Head Cap Screw 1/4-20 X 4 in

Product Description

The VALUE COLLECTION R68439944 is a 1/4-20 hex head cap screw measuring 4 inches under the head, manufactured from Grade 316 stainless steel with no applied finish coating. The partially threaded shank provides a clamping zone that pulls mating components together without thread engagement along the full length of the fastener. Grade 316 stainless steel offers superior corrosion resistance compared to Grade 304, making this screw well suited for wet, chemical, or marine environments. It follows Unified National Coarse (UNC) thread standards and is intended for installation by machinists, pipefitters, plumbers, HVAC technicians, and general tradespeople working with metal fabrication or mechanical assemblies.

This fastener is used in applications where corrosion resistance is a primary requirement, including coastal installations, pool equipment enclosures, chemical processing supports, plumbing support brackets, and outdoor HVAC mounting hardware. The 1/4-20 UNC thread pattern is one of the most widely used fractional thread sizes in North American trade work, compatible with standard hex nuts, lock nuts, and threaded inserts of the same specification. It is sold individually with a minimum order quantity of 10 pieces.

Key Features

• Grade 316 stainless steel construction for superior resistance to chlorides and corrosive environments
• Partially threaded shank for effective clamping force between joined components
• 1/4-20 UNC thread standard for broad compatibility with standard hardware
• 4-inch length under head for reaching through deeper assemblies or stacked materials
• Uncoated finish retains the natural corrosion properties of the base alloy without added plating

Compatibility

Designed for use with standard 1/4-20 UNC hex nuts, threaded inserts, and tapped holes conforming to Unified National Coarse thread specifications in inch-measurement assemblies.

Installation Notes

Installation requires a standard hex driver or open-end wrench sized for a 1/4-inch hex head fastener. Ensure mating threads are clean and free of debris before driving to avoid galling, which is a known risk when threading stainless steel fasteners. Apply an anti-seize compound rated for stainless steel when required by the application to prevent thread seizure. Follow applicable mechanical codes and torque guidelines for the assembly type being serviced.