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HILLMAN 9/16 in. D X 4-1/2 in. L Heat Treated Steel Hex Head Cap Screw 25 pk

HILLMAN 9/16 in. D X 4-1/2 in. L Heat Treated Steel Hex Head Cap Screw 25 pk

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Meet the Hillman 9/16 in. diameter by 4-1/2 in. long heat-treated steel hex head cap screw — a purpose-built fastener designed to deliver dependable, high-strength performance in d…

Hillman MPN 220306 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $87.99. Our online price is $97.99.
$97.99
Includes free shipping on orders over $75 · $8.99 standard below
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About Product Overview

Meet the Hillman 9/16 in. diameter by 4-1/2 in. long heat-treated steel hex head cap screw — a purpose-built fastener designed to deliver dependable, high-strength performance in demanding assemblies. This 25-pack brings professional-grade reliability to your toolbox, ready for immediate use on bulky projects and precision fittings alike.

Why this screw stands out

  • High-strength, heat-treated steel and a Grade 8 specification mean the screw holds up under heavy loads, resisting wear and fatigue in tough environments.
  • 9/16" hex head provides a broad drive surface for consistent torque, reducing cam-out and enabling smoother installation with standard wrenches or sockets.
  • 4-1/2" length paired with a coarse thread delivers robust engagement across materials, making it versatile for metal-to-metal and wood-to-metal connections.
  • 25-piece boxed set keeps your job site organized and ensures you have spare fasteners on hand for ongoing projects.

Ideal use cases

  • Heavy-duty framing, machinery mounting, and equipment installations where strength and durability are paramount.
  • Decking, railings, or structural assemblies that demand reliable fasteners with lasting performance.
  • Wood-to-metal or metal-to-metal connections where a robust, high-torque-capable fastener is required.

Technical snapshot

  • Brand: Hillman
  • Finish: Heat Treated
  • Grade: 8
  • Head diameter: 9/16 in
  • Length: 4-1/2 in
  • Material: Steel
  • Thread type: Coarse
  • Package quantity: 25
  • Packaging: Boxed
  • Product type: Hex Head Cap Screw

From framing to fastening, this Hillman hex head cap screw is designed for dependable performance when it matters most. Stock up with the 25-pack and tackle your toughest builds with confidence, knowing you have a high-strength, heat-treated fastener that’s ready to perform.

The Details Specifications

Brand Hillman
SKU 5324017
UPC 008236082401
Unit 0
Case Pack Quantity 2 per case
Retail Unit Quantity 1
Unit of Measure 25 BX
Dimensions (L × W × H) 4 × 5 × 3
Weight 9 lbs
Cubic Feet 0.10672 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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