Hillman 1/2 in. Diameter x 4-1/2 in. Length Heat-Treated Zinc Steel Hex Head Cap Screws, 25-Pack

Regular price $54.99

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Hillman Grade 5 Hex Head Cap Screws, 1/2" x 4-1/2", 25-Pack

Heavy-duty Grade 5 hex head cap screws made from heat-treated zinc-finished steel for strength and wear resistance. Partially threaded shank with washer face under the head ensures a secure seal in structural and machinery applications.


Key Features:

  • Grade 5 Strength: Heat-treated steel delivers reliable tensile strength for demanding projects
  • Corrosion-Resistant Finish: Zinc plating helps protect against rust and wear
  • Washer Face Under Head: Improved sealing and load distribution
  • Partially Threaded Shank: Ideal for clamping force and alignment in assemblies
  • Coarse Thread: Compatible with standard nuts and tapped holes; tighten with wrench or drill

Specifications Table:

Specification Details
Diameter 1/2 inch
Length 4-1/2 inch
Material Steel
Finish Heat Treated Zinc
Grade 5
Thread Type Coarse (USS)
Head Type Hex head with washer face
Shank Partially threaded
Number in Package 25
Packaging Type Boxed
Brand Hillman

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are partially threaded along the shank for better clamping and alignment.


Q: What thread type do they use?
A: Coarse thread (USS) suitable for common nuts and tapped holes.


Q: Can I use these outdoors?
A: Yes, the zinc finish offers corrosion resistance, though for harsh environments consider galvanized or stainless options.


Q: What tools are needed for installation?
A: Tighten with a wrench or a drill using the appropriate hex socket.


Q: What is included in the package?
A: A boxed 25-pack of 1/2 in. diameter x 4-1/2 in. length hex head cap screws.


Industrial Elegance with Enduring Strength

These zinc-finished cap screws bring a refined industrial note to any build, marrying clean geometry with purposeful hardware. The hex head and sleek, partially threaded shank feel tailored—precise and polished. Use them to anchor custom steel legs to a reclaimed wood slab for a modern, gallery-level table. Their strength and luminous sheen make them a quiet essential in crafting spaces that feel both luxurious and resilient.


Upgrade your project with these Grade 5 Hillman cap screws—add to cart for dependable strength and a clean, corrosion-resistant finish.

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