Value Collection MP30112 Hex Head Cap Screw 1/2-13 X 3 in

Product Description

The VALUE COLLECTION MP30112 is a Grade 5 steel hex head cap screw with a 1/2-13 UNC thread and a 3-inch length under head. Zinc plating provides corrosion resistance in standard indoor and light outdoor service conditions. The fastener is partially threaded, which helps maintain clamping force across unthreaded shank sections — a common requirement in structural and mechanical bolted joints. Supplied in a 10-piece pack, this screw meets ASME B18.2.1 dimensional standards, making it suitable for use in applications where dimensional conformance is specified. Installers in HVAC, plumbing, and general mechanical work will recognize this as a standard heavy-hex grade fastener used throughout equipment mounting, structural brackets, and access panel assemblies.

This cap screw is appropriate for a wide range of commercial and industrial fastening applications where a coarse-thread, medium-strength steel fastener is specified. Typical uses include equipment bases, structural steel connections, mechanical supports, conduit and duct hangers, fan assemblies, and general maintenance work. The 1/2-13 UNC thread is one of the most common coarse-thread sizes in North American trade work, making this fastener easy to pair with standard hex nuts, flat washers, and lock washers available across the trade supply channel.

Key Features

• Grade 5 steel construction provides medium-strength tensile performance suitable for general mechanical and structural bolted joints
• Zinc-plated finish offers corrosion resistance for standard service environments
• Partially threaded shank maintains clamping force and prevents thread engagement through thin members
• 1/2-13 UNC (Unified National Coarse) thread is a widely stocked standard size compatible with common hex nuts and hardware
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• Sold in a 10-piece pack for job-lot convenience

Compatibility

Designed for use with standard 1/2-13 UNC hex nuts, flat washers, and lock washers. Suitable as a general-purpose replacement or maintenance fastener wherever a 1/2-13 x 3-inch Grade 5 partially threaded hex cap screw is specified per ASME B18.2.1.

Installation Notes

Installation is performed with a standard 3/4-inch hex wrench or socket driver. Always de-energize equipment and relieve system pressure before replacing or tightening fasteners on live mechanical assemblies. Torque to the value specified in the equipment manufacturer's documentation or the applicable structural specification — do not substitute general torque estimates. Reuse of fasteners removed from high-cycle or high-load joints is not recommended without inspection.