Value Collection -30170-4 Hex Head Cap Screw 1-8x4 Grade 5

Product Description

The VALUE COLLECTION -30170-4 is a partially threaded hex head cap screw designed for general mechanical fastening applications. Manufactured from Grade 5 steel with a zinc-plated finish, this fastener measures 1-8 thread size with a 4-inch length under head. The hex drive head accepts standard wrenches and sockets for reliable torque application. Grade 5 steel provides a balance of tensile strength and ductility suited to medium-duty structural and mechanical assemblies. The zinc plating offers corrosion resistance in moderately exposed environments. This screw follows UNC thread standards, making it compatible with standard inch-series tapped holes and nuts.

This cap screw is used in a wide range of industrial, mechanical, and structural assembly applications. Typical installations include equipment frames, brackets, flanges, and mechanical housings where a partially threaded fastener is required to draw mating surfaces together. The partial threading allows a smooth shank section to pass through a clearance hole before engaging the tapped or nutted receiving member. Installers in manufacturing, HVAC equipment assembly, and general maintenance will find this a standard-duty fastener for inch-series applications.

Key Features

• Grade 5 steel construction for medium-duty tensile strength
• Zinc-plated finish provides moderate corrosion resistance
• Partially threaded shank allows clearance-fit pass-through before thread engagement
• UNC thread standard ensures compatibility with standard inch-series hardware
• Hex head accepts common wrenches and sockets for secure torque application
• Packaged in quantities of 16 per pack

Compatibility

Designed as a standard UNC inch-series hex head cap screw suitable for use with any 1-8 UNC tapped holes, nuts, or threaded inserts in general mechanical and structural assemblies.

Installation Notes

Installation is performed with a standard open-end, box-end, or socket wrench sized to the hex head. Ensure the receiving hole or nut is the correct 1-8 UNC thread specification before installation. Always verify thread engagement depth meets the requirements of the application before applying full load. Follow applicable mechanical codes and equipment manufacturer guidelines when used in structural or pressure-bearing assemblies.