Value Collection MP30145-3 Hex Head Cap Screw 5/8-11x3

Product Description

The VALUE COLLECTION MP30145-3 is a 5/8-11 hex head cap screw measuring 3 inches under the head, manufactured from Grade 5 steel with a zinc-plated finish. This partially threaded fastener conforms to ASME B18.2.1 standards, making it a reliable choice for structural and mechanical assemblies that demand consistent tensile strength and corrosion resistance. The zinc plating provides a baseline level of protection against oxidation in general-purpose indoor and light-duty outdoor applications. Sold in packs of 10, these screws are suited for plumbers, HVAC installers, electricians, and general mechanical contractors who need dependable fasteners for equipment mounting, pipe hangers, brackets, and structural connections.

This cap screw is used across a wide range of trade applications including HVAC equipment mounting, plumbing support assemblies, electrical enclosure hardware, and general mechanical fabrication. The 5/8-11 UNC thread pattern is a standard coarse-thread configuration widely used in equipment frames, structural steel connections, and heavy-duty brackets throughout commercial and residential construction. The partial threading provides a smooth shank section, which is common in applications requiring bolt grip in shear or where a clamp load across a joint is preferred over fully threaded engagement.

Key Features

• 5/8-11 UNC coarse thread, partially threaded for shear-load and clamping applications
• 3-inch length measured under the head per ASME B18.2.1 specification
• Grade 5 steel construction offers higher tensile strength than Grade 2 fasteners
• Zinc-plated finish provides corrosion resistance for general-purpose environments
• Conforms to ASME B18.2.1 dimensional standard for consistent fit and interchangeability
• Sold in packs of 10 to support small jobs and service calls

Compatibility

Designed as a standard 5/8-11 UNC hex head cap screw for general mechanical, structural, and trade-use assemblies requiring a Grade 5 partially threaded fastener in the 3-inch under-head length.

Installation Notes

Installation is performed with a standard hex wrench or socket matching the 5/8-inch bolt head. Ensure mating threads are clean and free of debris before assembly. Follow applicable torque guidelines from the equipment manufacturer or relevant standards such as the AISC or ASME specifications for the given joint design. Do not over-torque, as Grade 5 fasteners have defined proof load limits that should not be exceeded.