Value Collection MP30582 Hex Head Cap Screw 5/16-18 Grade 316

Product Description

The VALUE COLLECTION MP30582 is a 5/16-18 UNC hex head cap screw with a 3/4-inch length under head, manufactured from Grade 316 stainless steel. Grade 316 stainless provides superior corrosion resistance compared to 304, making this fastener well suited for wet, chemical, or marine environments. The hex head measures 1/2 inch across flats and accepts a standard wrench or socket drive. This is an inch-system fastener following UNC thread standards, installed by maintenance technicians, plumbers, pipefitters, HVAC mechanics, and general trade professionals who require reliable stainless fasteners in corrosive or high-moisture service conditions.

This fastener is appropriate for use in residential and commercial mechanical systems, outdoor equipment assemblies, pump and valve mounting, pipe hanger applications, and other installations where corrosion resistance is a primary requirement. Grade 316 stainless is commonly specified in coastal environments, chemical exposure settings, pool and spa equipment, and marine-adjacent applications where standard carbon steel or Grade 304 stainless would be insufficient. Sold individually with a minimum order quantity of 50 pieces.

Key Features

• Grade 316 stainless steel construction for enhanced corrosion resistance in wet and chemical environments
• 5/16-18 UNC thread size, inch-system measurement
• 3/4-inch length under head for accurate installation depth
• 1/2-inch hex head width accepts standard wrenches and sockets
• UNC thread standard ensures compatibility with standard inch-system threaded holes and nuts

Compatibility

Designed as a standard inch-system UNC hex head cap screw suitable for use wherever a 5/16-18 x 3/4-inch Grade 316 stainless fastener is specified.

Installation Notes

Installation is performed with a standard wrench or socket sized for a 1/2-inch hex head. Confirm the mating thread is 5/16-18 UNC before installation. In pressurized or structural applications, follow applicable codes and engineered fastener specifications for proper torque requirements. Avoid mixing stainless fasteners with dissimilar metals in submerged or high-moisture applications to minimize galvanic corrosion risk.