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Hillman

Hillman 1/2 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolts, 25-Pack

Hillman 1/2 in. x 4 in. Hot-Dipped Galvanized Steel Carriage Bolts, 25-Pack

Regular price $45.99 USD
Regular price Sale price $45.99 USD
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1/2 in. x 4 in. Galvanized Carriage Bolts (25-Pack)

Heavy-duty Hillman carriage bolts secure wood-to-wood or wood-to-metal connections with a smooth, low-profile dome head. Hot-dipped galvanized steel resists corrosion for outdoor and marine projects, while the square neck locks into wood to prevent spinning during tightening.


Key Features:

  • Outdoor-Ready Protection: Hot-dipped galvanized steel resists rust and corrosion in harsh weather.
  • Secure, Spin-Free Install: Square neck seats into wood to hold the bolt while you tighten the nut.
  • Clean, Low-Profile Head: Round dome head delivers a semi-flush finish without a separate washer.
  • Strong, Versatile Build: Grade 2 steel with coarse threads ideal for deck, fence, and general framing.
  • Bulk Value Pack: 25 bolts per box for efficient project coverage.

Specifications Table:

Specification Details
Diameter 1/2 inch
Length 4 inch
Material Steel
Finish Hot Dipped Galvanized
Grade 2
Thread Type Coarse (SAE)
Head Style Round dome carriage head
Neck Style Square neck, self-locking in wood
Number in Package 25 pack
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: What size are these carriage bolts?
A: They are 1/2 inch diameter and 4 inches in length with coarse threads.


Q: Are nuts and washers included?
A: No—this pack includes bolts only; purchase compatible 1/2 in. coarse-thread nuts and washers separately if needed.


Q: Can these be used outdoors?
A: Yes, the hot-dipped galvanized finish provides excellent corrosion resistance for exterior applications.


Q: What tools do I need for installation?
A: Drill a 1/2 in. hole, tap the square neck into the wood to lock, then tighten with a wrench on the nut side.


Q: What grade are the bolts?
A: Grade 2 steel, suitable for general-purpose structural and framing tasks.


Sculpted Strength for Outdoor Architecture

The rounded carriage head brings a refined, almost jewelry-like detail to gates, pergolas, and timber frames. I love how the smooth dome sits flush against wood, letting the grain remain the star. Pair these galvanized bolts with weathered cedar and matte black hardware for a balanced, artisanal look. Consider them the quiet luxury essential that keeps outdoor structures beautiful and enduring.


Build with confidence—choose these galvanized carriage bolts for long-lasting, weather-ready connections.

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