Value Collection MSFI05003000-050BX Machine Screw

Product Description

The VALUE COLLECTION MSFI05003000-050BX is a 1/2-13 x 3-inch flat head slotted machine screw manufactured from Grade 2 steel with a zinc-plated finish. It uses Unified National Coarse (UNC) threading and is measured by overall length. The zinc plating provides basic corrosion resistance for general-purpose fastening in indoor and light-duty applications. This screw is a standard hardware item used by electricians, plumbers, HVAC technicians, and mechanical contractors wherever a low-profile flat head and slotted drive are called for in a 1/2-13 thread application.

This machine screw is suited for general mechanical assembly, equipment mounting, panel fabrication, and structural fastening tasks in residential and light commercial settings. The flat head design allows the fastener to sit flush or countersunk in the mating material, making it appropriate for applications where a protruding head would interfere with clearance or appearance. It is compatible with standard 1/2-13 UNC tapped holes and nuts.

Key Features

• 1/2-13 UNC thread for use with standard tapped holes and nuts
• 3-inch overall length with full thread length under head
• Flat head profile allows flush or countersunk installation
• Slotted drive for use with flat-blade screwdrivers
• Grade 2 steel construction for general-purpose strength requirements
• Zinc-plated finish for basic corrosion resistance in dry or mildly humid environments

Compatibility

Designed as a general-purpose replacement or service fastener for any application requiring a 1/2-13 UNC flat head slotted machine screw with a 3-inch overall length.

Installation Notes

Installation requires a flat-blade screwdriver or slotted bit sized for a 1/2-inch fastener. Ensure the mating tapped hole or nut is 1/2-13 UNC before driving the fastener. Do not overtighten Grade 2 fasteners in high-stress or shear-critical joints where higher grades are specified by the design engineer. Verify fastener suitability with applicable mechanical codes before use in structural or pressure-boundary applications.