Hillman 5/16 in. Diameter x 1/2 in. Length Zinc-Plated Steel Hex Bolt, Coarse Thread, 100-Pack

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Hillman 5/16 in. x 1/2 in. Zinc-Plated Steel Hex Bolt (100-Pack)

Durable zinc-plated steel hex bolts for general fastening in wood, metal, and composite projects. Grade 2 construction with coarse threads offers reliable strength and corrosion resistance for everyday jobs.


Key Features:

  • General-Purpose Strength: Grade 2 steel suitable for most household and light-duty applications
  • Corrosion Resistant: Zinc-plated finish helps protect against rust in typical environments
  • Secure Grip: Partially threaded shank reduces shear movement between materials
  • Coarse Thread: Easier starts and strong holding power in common substrates
  • Bulk Convenience: 100-pack for efficient stocking on recurring projects

Specifications Table:

Specification Details
Brand Hillman
Material Steel
Finish Zinc Plated
Grade Grade 2
Diameter 5/16 inch
Length 1/2 inch
Thread Type Coarse
Head Style Hex
Thread Coverage Partially threaded
Count 100 pack
Packaging Type Boxed
Recommended Use Wood-to-wood, wood-to-metal, metal-to-metal fastening
Package Dimensions (L x W x H) 3.4 in x 3.5 in x 2 in
Package Weight 2.1 lbs

Frequently Asked Questions (FAQ):

Q: What size are these bolts?
A: They are 5/16 in. diameter by 1/2 in. length with coarse threads.


Q: What materials are these bolts made from?
A: They are made of Grade 2 steel with a zinc-plated finish for corrosion resistance.


Q: What applications are they suited for?
A: Ideal for fastening wood-to-wood, wood-to-metal, or metal-to-metal in general-use projects.


Q: Do I need matching hardware?
A: For best results, use matching Grade 2 washers and nuts with a similar zinc finish.


Q: Are the bolts fully threaded?
A: No, they are partially threaded to improve clamping and reduce shear.


Crisp Industrial Hardware with Everyday Ease

These hex bolts bring a clean, utilitarian polish to cabinetry jigs and custom shelving, thanks to their bright zinc sheen and confident geometry. I love the partially threaded shank—it creates a tight, rattle-free hold that feels tailored. Pair them with matching zinc washers and exposed brackets for a subtle, crafted detail. A small upgrade that makes hardworking spaces feel intentional and luxe.


Stock up on these reliable zinc-plated hex bolts today and keep your next project tight, tidy, and on schedule.

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