Value Collection CAI203101000-10LBBX Carriage Bolt 5/16-18

Product Description

The VALUE COLLECTION CAI203101000-10LBBX is a 5/16-18 UNC carriage bolt with a 1-inch length under the head and a square neck drive style. Made from Grade 2 steel with a zinc-plated finish, this bolt is a standard fastener used in wood-to-wood and wood-to-metal assemblies across construction, HVAC equipment mounting, electrical enclosure work, and general mechanical fabrication. The square neck below the dome head locks into a pre-drilled square hole or bites into wood, preventing rotation while a nut is tightened from the opposite side. Weighing approximately 0.1 pounds, this is a single-unit item suited for low-volume repair or replacement needs.

This carriage bolt is appropriate for light to medium-duty fastening applications in residential and light commercial settings. Typical use cases include securing structural wood members, attaching mounting brackets, and assembling equipment frames where a flush, tamper-resistant head profile is needed on the finished face. The zinc plating provides a base level of corrosion resistance suitable for dry or mildly humid indoor environments. Trade professionals in HVAC, electrical, and plumbing will recognize this as a utility fastener used throughout rough-in and equipment-setting work.

Key Features

• 5/16-18 UNC thread size for broad compatibility with standard nuts and hardware
• 1-inch length under the head for thin-stock and light structural assemblies
• Square neck prevents bolt rotation during nut tightening without a wrench on the head
• Grade 2 steel construction provides adequate strength for general-purpose fastening
• Zinc-plated finish offers basic corrosion resistance in indoor or low-moisture environments

Compatibility

Designed as a standard 5/16-18 UNC carriage bolt for use with any compatible 5/16-18 hex nut and washer in general-purpose fastening applications.

Installation Notes

Installation typically requires drilling a hole sized to match the bolt shank diameter so the square neck seats flush and resists turning. A standard wrench or socket is used to tighten the mating nut from the opposite face. No special tools or codes govern standard carriage bolt installation, though fastener selection for structural applications should reference applicable building codes. Ensure the mating material is appropriate for the zinc-plated finish if moisture exposure is a concern.