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The VALUE COLLECTION CAI506204000-025B is a 5/8-11 carriage bolt with a 4-inch length under head, manufactured from Grade 5 steel with a zinc-plated finish. The square neck design seats into material during installation to prevent rotation without requiring a wrench on the bolt head. This fastener follows inch-system UNC thread standards and is suited for structural and mechanical assembly work in construction, HVAC equipment mounting, and general fabrication. Plumbers, electricians, HVAC technicians, and general contractors use carriage bolts of this type when securing equipment frames, support structures, and brackets where a flush, tamper-resistant fastener head is preferred.
This carriage bolt is appropriate for through-bolting wood, steel, and composite assemblies in both residential and light commercial applications. The zinc plating provides baseline corrosion resistance suitable for indoor and sheltered outdoor environments. It is commonly used in equipment pad anchoring, duct support framing, electrical panel mounting structures, and similar trade installations where a 5/8-11 UNC fastener with a smooth domed head is specified. This SKU is sold in a minimum order quantity of 25 pieces.
Designed for use with standard 5/8-11 UNC hex nuts and washers in inch-system fastening applications across construction, HVAC, plumbing, and electrical support structure assembly.
Installation is performed by inserting the bolt through a pre-drilled hole sized for the shank diameter, allowing the square neck to seat and bite into the material before threading on a nut. A standard open-end or socket wrench is used to tighten the nut; the square neck prevents the bolt from spinning once seated. Power down or de-energize any equipment before fastening components to electrical or mechanical systems. Follow applicable structural and mechanical codes for torque and fastener spacing requirements on load-bearing assemblies.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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