Value Collection 5028MSR Machine Screw 1/2-13 Round Head

Product Description

The VALUE COLLECTION 5028MSR is a round head, slotted machine screw designed for general fastening applications in metal and other structural materials. It carries a 1/2-13 UNC thread size with a 1-3/4 inch length measured under the head. Manufactured from steel with a zinc finish for basic corrosion resistance, this screw meets the ASME B18.6.3 and SAE J82 standards. It is a standard inch-system fastener without a washer, suited for production assembly, maintenance, and repair work across mechanical and industrial settings.

This screw is appropriate for use in light to medium-duty fastening where a slotted round head profile is required. The round head provides a low-profile dome shape that sits above the work surface, making it suitable for through-hole applications where a flush finish is not needed. Typical users include mechanical technicians, maintenance personnel, and fabricators working in shop or field environments. Sold in minimum order quantities of 50 units per order.

Key Features

• Thread size 1/2-13 UNC for compatibility with standard inch-system tapped holes
• 1-3/4 inch length under head for predictable engagement depth
• Round head profile with slotted drive for use with standard flat-blade screwdrivers
• Steel construction with zinc finish for basic corrosion resistance in dry or indoor environments
• Meets ASME B18.6.3 and SAE J82 fastener standards
• No washer included — designed for direct bearing against the workpiece surface

Compatibility

Designed as a standard inch-system machine screw for use in any application requiring a 1/2-13 UNC thread. Suitable for tapped holes or with a corresponding hex nut conforming to inch-series standards.

Installation Notes

Installation is typically performed by mechanical technicians or maintenance personnel using a flat-blade screwdriver or slotted bit sized for a 1/2-inch head. Ensure the mating tapped hole or nut matches the 1/2-13 UNC thread specification before installation. Do not overtighten, as zinc-finished steel fasteners can gall or strip in softer base materials. Follow applicable torque guidelines from the equipment manufacturer or relevant industry standards for the specific joint material and load requirements.