Skip to content
Free Local Pickup ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted American Hardware Brands

HILLMAN 3/4 in. D X 3-1/2 in. L Zinc Plated Steel Hex Bolt 20 pk

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Meet the Hillman 3/4 in. hex bolt β€” a dependable, zinc-plated steel fastener designed to simplify heavier fastening tasks while delivering lasting durability. With a 3/4-inch head…

Hillman MPN 190510 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $48.99. Our online price is $54.99.
$54.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Meet the Hillman 3/4 in. hex bolt β€” a dependable, zinc-plated steel fastener designed to simplify heavier fastening tasks while delivering lasting durability. With a 3/4-inch head diameter and a 3-1/2-inch length, this bolt brings strong, confident clamping to wood, metal, or composite assemblies. A 20-pack boxed format makes it easy to stock up for ongoing projects or multiple builds.

Why this Hillman hex bolt stands out

  • Robust steel with a corrosion-resistant finish: The zinc plating protects the bolt in indoor and light outdoor environments, helping it endure humidity, dust, and regular use without rust.
  • Grade 2, reliable strength: Built for everyday, non-structural fastening needs where dependable performance matters, from home improvement to shop-ready repairs.
  • Coarse thread for fast, easy assembly: Optimized for quick driving into wood and softer materials, reducing cross-threading and minimizing wear on bolts and nuts.
  • Generous length and bold head: The 3-1/2-inch length provides ample bite for thick stock or bracket assemblies, while the hex head supports solid torque with standard wrenches or sockets.
  • Value-packed packaging: A boxed 20-pack ensures you have spare fasteners on hand for future projects, drop-ins, or ongoing maintenance.

Ideal uses and practical applications

  • Decking projects, fence installations, and furniture assembly where thicker stock or multiple components require a longer fastener.
  • Mounting brackets, supports, or cross-members in wooden frames or light metal assemblies.
  • Repairs and replacements in workshops, garages, and basements where durable, repeatable fastening is key.
  • General-purpose, non-critical fastenings that benefit from a strong hex drive and straightforward installation.

Specifications at a glance

  • Brand: Hillman
  • Diameter: 3/4 in
  • Length: 3-1/2 in
  • Material: Steel
  • Finish: Zinc plated
  • Thread type: Coarse
  • Head type: Hex bolt
  • Grade: 2
  • Packaging: Boxed
  • Quantity: 20 bolts per box

For reliable, everyday fastening that stands up to regular use, this Hillman hex bolt delivers predictable performance when paired with the right nuts and washers. Whether you’re assembling new furniture, reinforcing a workshop rack, or securing thick boards, these zinc-plated bolts offer solid grip, easy installation, and long-lasting value.

The Details Specifications

Brand Hillman
SKU 57104
UPC 008236076066
Unit 0
Case Pack Quantity 2 per case
Retail Unit Quantity 1
Unit of Measure 20 BX
Dimensions (L × W × H) 7 × 5 × 3
Weight 11 lbs
Cubic Feet 0.1016 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare