Value Collection 872199PR Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION 872199PR is a fully threaded hex socket cap screw designed for secure fastening in mechanical, structural, and industrial assembly applications. Built from alloy steel with a zinc-plated finish, this fastener delivers reliable tensile strength and corrosion resistance in demanding environments. The 5/16-18 UNC thread designation indicates a coarse-thread Unified National Coarse profile, and the 1/4-inch hex drive accepts standard hex keys and socket drivers. With a 3/4-inch length under head and full threading from tip to head, this screw is suited for through-hole and tapped-hole installations where maximum thread engagement is required. Manufactured to ASME B18.8 and ASTM A574 standards.

This fastener is used across a wide range of trade and industrial applications, including HVAC equipment assembly, plumbing fixture mounting, electrical enclosure fabrication, and general mechanical assembly. The coarse 5/16-18 UNC thread profile is widely specified in light structural and equipment-mounting situations where quick engagement and resistance to cross-threading are priorities. The zinc plating provides a layer of corrosion protection suitable for indoor and moderately protected outdoor installations. Installers in manufacturing, maintenance, and field-service roles will find this screw compatible with standard hex-drive tooling.

Key Features

• 5/16-18 UNC coarse-thread profile for broad tooling and hardware compatibility
• Fully threaded 3/4-inch length under head for maximum thread engagement
• Alloy steel construction meets ASTM A574 mechanical requirements
• Zinc-plated finish provides corrosion resistance for general-purpose use
• 1/4-inch hex socket drive compatible with standard hex keys and bit drivers
• Meets ASME B18.8 dimensional standards for socket cap screws

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw for general mechanical assembly, equipment mounting, and structural fastening applications where ASME B18.8 and ASTM A574 compliance is specified.

Installation Notes

Installation is performed with a 1/4-inch hex key or socket driver; confirm the drive tool is fully seated before applying torque to avoid cam-out or rounding. Ensure the mating tapped hole or nut is clean and free of debris before threading to protect the zinc coating and thread integrity. Do not over-torque alloy steel socket cap screws in softer base materials such as aluminum or plastic. Minimum order quantity for this SKU is 100 pieces.