Value Collection SBRI03103000-100BX Machine Screw 5/16-18

Product Description

The VALUE COLLECTION SBRI03103000-100BX is a 5/16-18 x 3 inch round head slotted machine screw manufactured from Grade 2 steel with a zinc-plated finish. The round head profile and slotted drive make this screw a straightforward choice for general-purpose mechanical assembly. Length is measured under the head at 3 inches, and the fastener is produced to ASME B18.6.3 standards, ensuring consistent dimensional tolerances. This box contains 100 screws and is suited for maintenance shops, contractors, and trade professionals who need reliable fasteners in quantity for production or service work.

These screws are used in a wide range of light-to-medium duty assembly applications across mechanical, electrical, and general construction trades. The 5/16-18 UNC thread is a common coarse-pitch size found in sheet metal enclosures, equipment panels, junction boxes, and structural brackets. The zinc plating provides basic corrosion resistance suitable for indoor or sheltered outdoor environments. No washer is included or required under the head per the standard configuration.

Key Features

• 5/16-18 UNC coarse thread for reliable engagement in standard tapped holes
• Round head profile with slotted drive for simple flat-blade installation
• Grade 2 steel construction meets ASME B18.6.3 dimensional standards
• Zinc-plated finish for basic corrosion resistance in sheltered environments
• 3 inches length measured under head for consistent fit in standard clearance applications
• Sold in a box of 100 for shop stock, service vans, and production use

Compatibility

Designed as a general-purpose replacement or stock fastener for any application requiring a 5/16-18 UNC coarse thread, round head, slotted machine screw conforming to ASME B18.6.3.

Installation Notes

Installation is performed with a standard flat-blade screwdriver sized to the slotted head. Ensure the mating tapped hole or nut is 5/16-18 UNC thread before installation. Do not overtighten Grade 2 fasteners in soft base materials such as aluminum or plastic. Follow applicable mechanical and electrical codes when using fasteners in code-governed assemblies.