Value Collection MP30066 Hex Head Cap Screw 3/8-16 X 4 in

Product Description

The VALUE COLLECTION MP30066 is a 3/8-16 hex head cap screw designed for general mechanical and structural fastening applications. Manufactured from Grade 5 steel with a zinc-plated finish, this fastener delivers reliable clamping force in both indoor and light outdoor environments where moderate corrosion resistance is required. The screw measures 4 inches in length under the head and features partial threading along the shank, conforming to ASME B18.2.1 dimensional standards. Sold in a pack of 10, this screw is a standard UNC-thread fastener suitable for use by HVAC technicians, pipefitters, electricians, and general maintenance personnel who need a reliable inch-series cap screw on the job.

This hex head cap screw is used across a wide range of trade and industrial applications including equipment mounting, panel assembly, bracket installation, and mechanical fastening in residential and light commercial settings. The 3/8-16 UNC thread size is one of the most common inch-series thread standards, making it compatible with a broad range of tapped holes, nuts, and threaded inserts found in standard mechanical assemblies. The partially threaded shank provides a grip section that helps maintain joint alignment under load.

Key Features

• Grade 5 steel construction provides adequate tensile strength for general mechanical fastening
• Zinc-plated finish offers light corrosion resistance for indoor and semi-exposed installations
• Partially threaded shank allows for precise clamping without full-thread engagement through the joint
• 3/8-16 UNC thread standard ensures broad compatibility with standard inch-series hardware
• Conforms to ASME B18.2.1 for dimensional consistency and quality assurance
• Sold in a 10-pack to support common service and installation quantities

Compatibility

Designed as a standard inch-series hex head cap screw suitable for use with 3/8-16 UNC tapped holes, nuts, and threaded inserts in general mechanical, HVAC, plumbing, and electrical equipment assemblies.

Installation Notes

Installation is performed with a standard hex wrench, socket, or open-end wrench sized for a 3/8-inch hex head cap screw. De-energize and lock out all electrical equipment and relieve system pressure before fastening or unfastening hardware in pressurized or live systems. Do not exceed the torque capacity appropriate for Grade 5 steel fasteners at this thread size; consult applicable mechanical codes or equipment manufacturer guidelines for torque requirements. Inspect threads for damage before installation and ensure mating threads are clean and free of debris.