Value Collection MSRI05005000-025BX Machine Screw

Product Description

The VALUE COLLECTION MSRI05005000-025BX is a 1/2-13 x 5-inch round head slotted machine screw manufactured from alloy steel with a zinc-plated finish. It is designed for medium-to-heavy-duty fastening applications where a smooth, domed head profile is required and installation access allows for a standard slotted screwdriver. The zinc plating provides corrosion resistance suitable for general indoor and light industrial service. Compliant with ASME B18 6 3, this fastener meets recognized dimensional and performance standards for inch-series machine screws. Length measurement is taken under the head, giving a full 5-inch thread engagement depth.

This screw is well suited for mechanical assemblies, equipment enclosures, structural fixtures, and maintenance applications across HVAC, electrical, plumbing, and general trade work. The 1/2-13 thread designation indicates a Unified National Coarse thread form, which is the most common inch-series coarse thread for this diameter and is widely compatible with standard hex nuts, flange nuts, and tapped holes in steel, aluminum, and similar materials. Installers working on equipment frames, mounting brackets, or panel assemblies will find this a reliable general-purpose fastener.

Key Features

• 1/2-13 UNC thread for broad compatibility with standard inch-series hardware
• 5-inch length under head for deep fastening or through-material applications
• Round head profile provides a low-profile dome finish suitable for exposed or semi-exposed assemblies
• Slotted drive accommodates standard flat-blade screwdrivers and bits
• Alloy steel construction for greater tensile strength compared to plain carbon steel
• Zinc-plated finish for corrosion resistance in general service environments
• Meets ASME B18 6 3 dimensional and tolerance standards

Compatibility

Designed for use with standard 1/2-13 UNC inch-series nuts, washers, and tapped holes in general mechanical and trade fastening applications.

Installation Notes

This fastener is installed by mechanics, maintenance technicians, and trade professionals using a flat-blade screwdriver or slotted bit of the appropriate tip width. Ensure the mating thread in a nut or tapped hole is also 1/2-13 UNC before installation to avoid cross-threading. Do not exceed the rated drive torque for the fastener grade and do not use impact drivers without a torque-limiting adapter. Inspect the zinc-plated finish for damage before use in moisture-prone environments.