1/2-13 x 4 Coarse Hex Cap - Grade 5 Box/25

Overview

The 1/2-13 x 4 Coarse Hex Cap Screw, Grade 5, Box/25 (00345) is designed for heavy-duty fastening applications requiring a wrench-driven hexagonal head fastener in standard coarse thread configurations.

Technical Features

• Hexagonal head design — engineered to be driven by a standard wrench, enabling high torque application and secure tightening without bit slippage.
• 1/2-13 coarse thread — the Unified National Coarse (UNC) thread pitch provides faster engagement and greater resistance to cross-threading compared to fine-thread variants, particularly useful in softer base materials.
• 4-inch length — provides sufficient grip length for joining thicker material stacks or assemblies requiring deep thread engagement.
• Grade 5 rating — indicates a medium-strength carbon steel fastener heat-treated to meet SAE J429 Grade 5 standards, offering greater tensile strength than Grades 2 and below.
• Sold in boxes of 25 — bulk packaging at 3.91 lb per box supports job-site efficiency and inventory stocking for recurring fastening tasks.

Applications

• Structural assemblies in construction and fabrication where medium-to-high clamping force is required.
• Mechanical and industrial equipment assembly requiring a wrench-accessible hex head fastener.
• Agricultural and automotive applications where coarse threads offer reliable engagement in steel and cast components.
• General maintenance and repair tasks requiring a standardized, widely compatible 1/2-inch coarse thread bolt.