3/8 x 3 galvanized carriage bolt round head square neck side view
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Screws & Fasteners

3/8-inch × 3-inch Hot-Dipped Galvanized Carriage Bolts

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$13.25 In stock

SKU TCS-CB-3/8X3-25

PKG Quantity

Details

Delivery by arrangement: Buying heavy or bulk materials? Delivery by The Contractors Site may be available, depending on your location and order size. Contact us before placing your order to confirm availability, timing, and the delivery charge.

Hillman Paulin Galvanized Carriage Bolts

These 3/8-inch diameter × 3-inch carriage bolts have a round head and square neck, with a hot-dipped galvanized finish. Select the pack size needed for your project.

Follow the manufacturer's installation instructions and your project's fastening specifications. Confirm thread compatibility, matching nuts and washers, hole dimensions and coating suitability before installation. For structural or load-bearing connections, use the exact fastener and installation method specified for the connection.

Options

Option SKU Price Select
25 TCS-CB-3/8X3-25 $13.25
50 TCS-CB-3/8X3-50 $17.75
100 TCS-CB-3/8X3-100 $24.50

Square Neck Prevents Spinning on Install

The square shoulder under the dome bites into the wood as you tighten the nut, locking the bolt in place without needing a second tool — a real time-saver on high-volume installations.

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  • Great quality at fair price.

    The fasteners I bought from here are solid and reliable. You can tell these are contractor-grade products, not cheap knock-offs.
    Amanda R.

    Amanda R.Builder

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    The Blind Mark Locator worked perfectly for my drywall project. No guessing, no mistakes. Makes the job fast and professional.

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What types of contractor tools do you offer?

We specialize in high-quality tools for calculating, measuring, leveling, and locating, essential for contractors and professionals in the construction industry. Our inventory includes laser measures, levels, stud finders, measuring tapes, and more.

Are the tools suitable for professional contractors?

Yes, our tools are designed to meet the needs of both professional contractors and DIY enthusiasts.

How accurate are the measuring and leveling tools?

Our tools are precision-engineered for accuracy, meeting industry standards for professional use.

What is the durability of your tools like?

Our tools are built with high-quality materials to ensure they can withstand tough working conditions.

Do you offer warranties on your products?

Yes, most of our products come with a manufacturer’s warranty. Please refer to the product description for specific warranty details.

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Simply browse our product catalog, select the tools you need, and add them to your cart. Once ready, proceed to checkout, where you can complete your purchase securely.

Can I get product recommendations or advice?

Absolutely! Our customer service team is available to provide recommendations and answer any questions you may have about our tools.