Value Collection SBRI03103500-050BX Machine Screw 5/16-18

Product Description

The VALUE COLLECTION SBRI03103500-050BX is a 5/16-18 x 3-1/2 inch round head slotted machine screw made from Grade 2 steel with a zinc-plated finish. The round head profile provides a low-profile dome shape suited for general fastening applications where a flush or countersunk head is not required. The slotted drive accepts a standard flat-blade screwdriver. Length is measured under the head at 3-1/2 inches. This screw meets ASME B18.6.3 dimensional standards. It is sold in a minimum order quantity of 50 units. Trade professionals, maintenance crews, and fabricators use these fasteners for general mechanical assembly across a wide range of applications.

This screw is appropriate for light-duty to medium-duty fastening in residential and commercial maintenance, HVAC panel assembly, electrical enclosure work, plumbing fixture mounting, and general sheet metal or structural assembly tasks. The zinc plating provides basic corrosion resistance for indoor or sheltered outdoor environments. The 5/16-18 coarse thread engages steel, aluminum, and plastic materials when used with a matching tapped hole or nut. This fastener is well suited for applications governed by standard inch-system hardware specifications.

Key Features

• 5/16-18 coarse thread form for reliable engagement in standard tapped holes
• 3-1/2 inch length under head for through-fastening of thicker assemblies
• Round head with slotted drive for use with common flat-blade screwdrivers
• Grade 2 steel construction meets ASME B18.6.3 dimensional standards
• Zinc-plated finish provides basic corrosion protection in sheltered environments
• Sold in multiples of 50 for job-site and shop stocking convenience

Compatibility

Designed for use in any application requiring a 5/16-18 inch-system machine screw with a round slotted head per ASME B18.6.3. Compatible with standard 5/16-18 hex nuts, flange nuts, and pre-tapped holes in steel, aluminum, and similar substrates.

Installation Notes

Installation is performed by hand or with a flat-blade screwdriver sized to the slotted drive; use of an oversized or worn blade can damage the slot and should be avoided. Ensure the mating hole or nut is clean and free of debris before driving to avoid cross-threading the coarse 5/16-18 thread. Follow applicable mechanical or structural codes for torque requirements specific to the assembly. Power down or de-energize any panel or enclosure before installing fasteners in electrical or HVAC cabinet applications.