1/2-13 x 5-1/2 Carriage Bolts - Galvanized Box/25

Overview

The 1/2-13 x 5-1/2 Carriage Bolts - Galvanized Box/25 (05526) is designed for hardware fastening applications requiring a secure, non-rotating bolt connection, typically in wood assemblies.

Technical Features

• Domed or countersunk head profile: Provides a smooth, low-profile bearing surface on the finished side of the assembly, reducing snag points and presenting a clean appearance.
• Short square section under the head: Grips directly into the substrate material (typically wood) when driven, preventing bolt rotation during nut tightening without requiring a secondary tool on the bolt head.
• 1/2-13 thread specification: Coarse-thread UNC profile delivers strong engagement with standard nuts and hardware, supporting high-load fastening requirements.
• 5-1/2 in. shank length: Accommodates thicker material stacks or assemblies requiring extended reach before threading.
• Galvanized finish: Zinc coating provides corrosion resistance, making these bolts suitable for outdoor, exposed, or moisture-prone environments.
• Box of 25 units: Consistent bulk packaging supports project-scale work, reducing per-unit cost and ensuring supply for multi-fastener assemblies.

Applications

• Structural wood framing and timber connections where a flush, tool-free bolt head is required
• Outdoor decking, fencing, and pergola construction where corrosion resistance is a priority
• Playground equipment, landscape structures, and agricultural builds requiring a secure, tamper-resistant fastener profile
• General hardware assembly involving wood-to-wood or wood-to-metal joints with standard 1/2 in. hardware