5/16-18 x 2-1/2 Coarse Hex Cap - Grade 5 Box/100

Overview

The Midwest Fastener Corp 5/16-18 x 2-1/2 Coarse Hex Cap Screw – Grade 5, Box/100 (00279) is designed for general-purpose mechanical fastening applications requiring a wrench-driven hex head fastener in a coarse thread configuration.

Technical Features

• Grade 5 Strength Rating: Meets medium-strength fastener standards, making these screws suitable for structural and mechanical assemblies that require greater tensile strength than Grade 2 fasteners.
• 5/16-18 Coarse Thread: The unified coarse thread (UNC) profile provides faster engagement and greater resistance to cross-threading compared to fine thread variants, reducing installation time in field conditions.
• 2-1/2 in. Length: Provides adequate grip length for fastening through moderate material thicknesses while maintaining full thread engagement.
• Hexagonal Head Design: The six-sided head is engineered to be driven by a standard wrench or socket, allowing high torque application and secure tightening.
• Box of 100 Units: Bulk packaging supports continuous production, repair, or construction workflows without frequent restocking interruptions.

Applications

• General mechanical assemblies requiring a coarse-thread hex cap fastener
• Structural connections in light-to-medium duty fabrication
• Equipment maintenance and repair tasks requiring wrench-driven fasteners
• Construction and carpentry applications where UNC thread compatibility is required
• High-volume fastening jobs benefiting from bulk box quantity packaging