Value Collection SBFI03100500-100BX Machine Screw 5/16-18

Product Description

The VALUE COLLECTION SBFI03100500-100BX is a 5/16-18 x 1/2-inch flat head slotted machine screw made from Grade 2 steel with a zinc-plated finish. The flat head profile sits flush with the mating surface when fully driven, making it well-suited for assemblies where a low-profile fastener is required. The slotted drive accepts a standard flat-blade screwdriver. Overall length and length under head are both 1/2 inch, indicating a fully threaded shank. These are Unified National Coarse (UNC) thread fasteners, sold in a box quantity of 100 pieces per package.

These machine screws are appropriate for general-purpose fastening applications across residential and light commercial work. Typical use cases include mounting brackets, electrical enclosures, HVAC equipment panels, and plumbing fixture hardware where a flush-sitting fastener is preferred. The zinc plating provides a basic level of corrosion resistance suitable for dry and mildly humid indoor environments. Tradespeople working in HVAC, electrical, or plumbing will find this a standard hardware item for panel assembly and equipment installation tasks.

Key Features

• 5/16-18 UNC thread for broad compatibility with standard tapped holes and nuts
• Flat head profile installs flush with the work surface
• Slotted drive works with any standard flat-blade screwdriver
• Grade 2 steel construction meets general-purpose mechanical fastening requirements
• Zinc-plated finish provides basic corrosion resistance in dry indoor environments
• Box of 100 pieces supports high-volume or recurring fastening tasks

Compatibility

Designed as a general-purpose UNC machine screw suitable for use wherever a 5/16-18 flat head slotted fastener is specified in standard inch-measurement applications.

Installation Notes

Installation requires a correctly sized flat-blade screwdriver or a slotted bit matched to the head recess. Verify the mating thread is 5/16-18 UNC before driving to avoid cross-threading. For use in electrical enclosures or panels, follow all applicable NEC requirements and de-energize equipment before servicing. Do not exceed the torque capacity of Grade 2 hardware in high-load or vibration-intensive applications where a higher-grade fastener may be required.