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HILLMAN 1/2 in. D X 3-1/2 in. L Hot Dipped Galvanized Steel Hex Bolt 25 pk

HILLMAN 1/2 in. D X 3-1/2 in. L Hot Dipped Galvanized Steel Hex Bolt 25 pk

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Built for durability in challenging environments, the Hillman 1/2 in x 3-1/2 in Hex Bolt is a dependable fastening solution for outdoor and rugged projects. Forged from steel and f…

Hillman MPN 811620 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $39.99. Our online price is $43.99.
$43.99
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About Product Overview

Built for durability in challenging environments, the Hillman 1/2 in x 3-1/2 in Hex Bolt is a dependable fastening solution for outdoor and rugged projects. Forged from steel and finished with hot-dipped galvanizing, it resists rust, corrosion, and weathering so your assemblies stay secure season after season.

Key Specifications

  • Diameter: 1/2 in
  • Length: 3-1/2 in
  • Thread Type: Coarse
  • Grade: 2
  • Material: Steel
  • Finish: Hot Dipped Galvanized
  • Packaging: 25 bolts per boxed package
  • Product Type: Hex Bolt

Why this bolt stands out

Cold-weather or high-humidity environments can wreak havoc on untreated fasteners. The hot-dipped galvanized coating on this Hillman hex bolt creates a robust barrier against moisture and corrosive elements, extending the life of your outdoor structures—think decks, fences, gate assemblies, and garden trellises. The Grade 2 designation signals reliable, standard-strength performance for common, non-critical structural connections, giving you confidence without overpaying for unnecessary specifications.

Ideal uses and practical tips

  • Outdoor projects: Deck railings, fence posts, pergolas, garden sheds, and patio furniture frames benefit from the corrosion resistance of galvanized steel.
  • Wood-to-wood or wood-to-metal connections: The coarse thread bites quickly into softwoods for fast, secure assemblies.
  • Convenience: The 25-pack in a boxed package makes it easy to stock up for multi-project jobs and ensures you have spares on hand.

Tips for best results: pair these hex bolts with the appropriate nuts and washers, use a predrill for hardwoods to prevent splitting, and tighten to a secure torque to avoid loosening over time. For outdoor installations, consider paired corrosion-resistant hardware and routine inspection to maintain long-term performance.

The Details Specifications

Brand Hillman
SKU 54874
UPC 008236132434
Unit 0
Case Pack Quantity 2 per case
Retail Unit Quantity 1
Unit of Measure 25 BX
Dimensions (L × W × H) 4 × 4 × 4
Weight 6 lbs
Cubic Feet 0.1016 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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