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Fasteners

Hillman 3/4 × 3 in Grade 5 Hex Head Cap Screws (20-Pack)

Heat-treated zinc

$69.99 /pack

Orders start at $399. Combine any items to reach it.

Packs
1 pack
$69.99
Standard delivery
$49.99 per order
Sales tax
Added at checkout

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Standard delivery$49.99

Per order, added in your cart. We deliver to the 48 contiguous states.

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Fasteners

Details & specifications.

From the maker · the maker’s description

These Hillman hex head cap screws are Grade 5 steel fasteners with a heat-treated zinc finish for strength and corrosion resistance. At 3/4 in. diameter by 3 in. length, they’re ideal for heavy-duty assemblies requiring a coarse-thread, partially threaded shank and a washer face for secure seating.

Industrial Strength, Sleek Utility

This hex cap screw embodies a quiet rigor—clean geometry with a confident, engineered presence. The zinc finish lends a subtle sheen that pairs beautifully with raw woods and dark metals. Use it as a refined, functional detail in exposed hardware moments—think open shelving brackets or custom steel frames. It’s a small piece that elevates the whole composition into luxe utilitarianism.

Power your next build with Grade 5 strength—add this 20-pack of Hillman hex cap screws to your cart today.

SKU
200420
Length
3 inch
Finish
Heat-treated zinc
Head
Hex head with washer face
Material
Steel
Diameter
3/4 inch
Brand
Hillman
Grade
Grade 5
Thread Type
Coarse
Threading
Partially threaded shank
Units per Package
20 pack
Packaging Type
Boxed
Full product name
Hillman 3/4 in. Diameter x 3 in. Length Heat-Treated Zinc Steel Hex Head Cap Screw, 20-Pack

Key features

  • Heavy-Duty Strength: Grade 5 heat-treated steel for reliable clamping force
  • Corrosion-Resistant Finish: Zinc coating helps protect against wear and rust
  • Secure Seating: Washer face under head provides a better seal and load distribution
  • Partially Threaded Shank: Adds shear strength where it matters in structural applications
  • Convenient Pack Size: 20-pack for jobsite efficiency and replenishment

Specifications are provided by the manufacturer. Brand names are trademarks of their owners.

Guide

Choosing the fastener

  1. 1

    Outdoors and treated lumber

    Use hot-dip galvanized, stainless or exterior-coated fasteners, and follow the board maker’s fastener recommendation.

  2. 2

    Price per piece

    The pack price divided by the pieces in the pack, both as listed.

  3. 3

    Drive

    Star (Torx), square, Phillips or hex, as the listing states. Match the bit you carry.

Before you ask

Questions about this product.

Rather talk it through? 1.877.490.7099

  • They are partially threaded along the shank, providing added shear strength.