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

Overview

The Midwest Fastener Corp 5/16-18 x 2 Coarse Hex Cap Screw (00277) is designed for general fastening applications requiring a standard hex-drive, coarse-thread fastener. Supplied in a box of 100, this Grade 5 fastener delivers the elevated tensile strength required for structural and mechanical assemblies where low-grade hardware is insufficient.

Technical Features

• Grade 5 strength rating — meets medium-strength fastener standards, providing greater tensile and proof load capacity compared to Grade 2 hardware, suitable for structural connections and load-bearing assemblies.
• 5/16-18 coarse thread (UNC) — the wider thread pitch of coarse-series fasteners allows faster installation and improved resistance to cross-threading, particularly in softer base materials.
• 2-inch body length — provides adequate grip length for fastening through standard material thicknesses without requiring additional hardware extension.
• Hexagonal head design — engineered to be driven by a standard open-end, box, or socket wrench, enabling high-torque installation and secure, tool-assisted tightening.
• Box quantity of 100 — bulk packaging reduces per-unit cost and ensures an adequate supply for production runs, maintenance tasks, or multi-point assemblies.

Applications

• General structural and mechanical assemblies requiring medium-strength, wrench-driven fasteners.
• Equipment fabrication and repair where coarse-thread engagement in steel, iron, or similar materials is required.
• Construction and contracting work calling for Grade 5 hex cap screws in standard UNC thread patterns.
• Maintenance and facilities operations that stock bulk fasteners for recurring hardware needs.