SKU: 99123099542

Hillman 5/16 in. x 3 in. Zinc-Plated Steel Hex Bolt, Grade 5 — 100 Pack

Sale price$35.09 Regular price$38.99
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Description

Hillman 5/16 in. x 3 in. Zinc-Plated Steel Hex Bolt, Grade 5 — 100 PackHillman Zinc Plated Grade 5 Hex Bolt, 5 16 in. x 3 in. (100 Pack) Durable Grade 5 hex bolts for general fastening in wood, metal, and composite projects. Zinc plated steel resists corrosion and features a partially threaded shank for strong clamping power. Key Features: Corrosion Resistant Zinc Plating: Helps protect against rust for long lasting performance Grade 5 Strength: Heat treated steel provides dependable holding power for general

Hillman Zinc-Plated Grade 5 Hex Bolt, 5/16 in. x 3 in. (100-Pack)

Durable Grade 5 hex bolts for general fastening in wood, metal, and composite projects. Zinc-plated steel resists corrosion and features a partially threaded shank for strong clamping power.


Key Features:

  • Corrosion-Resistant Zinc Plating: Helps protect against rust for long-lasting performance
  • Grade 5 Strength: Heat-treated steel provides dependable holding power for general construction
  • Partially Threaded Shank: Enhances grip and reduces shear movement between materials
  • Hex Cap Head: Accepts higher torque for secure installations with wrenches or sockets
  • Coarse 5/16"-18 Threads: Matches standard nuts and washers for straightforward assembly

Specifications Table:

Specification Details
Material Steel
Finish Zinc-plated
Color/Finish Silver
Head Type Hex
Diameter 5/16 in
Length 3 in
Thread Type Coarse
Thread Pitch 5/16"-18
Full Thread No (partially threaded)
Grade 5
Unit of Measure Count
Package Quantity 100
Measure Type Standard (SAE)

Frequently Asked Questions (FAQ):

Q: Are these bolts fully threaded?
A: No. They feature a partially threaded shank for improved clamping strength.


Q: What nut and washer grade should I use?
A: Use Grade 5 nuts and washers to match the bolt’s strength.


Q: What drill size is needed for installation?
A: Drill a hole matching the bolt diameter—5/16 inch.


Q: Can these be used outdoors?
A: Yes, the zinc plating offers corrosion resistance; however, for harsh or marine environments, consider more specialized coatings.


Q: What thread specification do these bolts have?
A: Coarse thread, 5/16"-18.


Streamlined Utility with a Polished Edge

These zinc-plated hex bolts bring a clean, silvery finish that elevates exposed hardware moments. The crisp hex head and partially threaded shank lend a tailored, utilitarian elegance to millwork and custom metal projects. Style them with matte black brackets for a chic, mixed-metal narrative. A small detail with big impact—perfect for refined, resilient spaces.


Secure your projects with dependable Grade 5 performance—add this 100-pack of Hillman hex bolts to your cart today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99123099542

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Reviewed in the United States on June 30, 2020
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Air Assault
Waukegan, US
★★★★★ 5
Super great product. Has the power and functionality to get you repairing fast!
Super great product. Has the power and functionality to get you repairing fast! Fully recommend this and it has worked great since I've owned it. Still going strong in the durability and design looks like it will keep it going strong for many years. Highly highly recommend buying this. Will work in Kuwait, Iraq, UAE, and Saudi. Good for Camps around the CENTCOM area!
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Reviewed in the United States on October 6, 2025
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Jed V
Port Orchard, US
★★★★★ 5
Solid Product
worked well, easy to install.
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Reviewed in the United States on November 3, 2025
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MjR
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