Hillman 1/4 in. x 4-1/2 in. Zinc-Plated Steel Carriage Bolt, 100-Pack

Hillman 1/4 in. x 4-1/2 in. Zinc-Plated Steel Carriage Bolt, 100-Pack

Regular price $45.83

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Hillman 1/4 in. x 4-1/2 in. Zinc-Plated Carriage Bolts (100-Pack)

Durable zinc-plated steel carriage bolts for wood fastening projects. The round head with square neck resists spin-out, delivering secure installs in decks, fences, and general construction.


Key Features:

  • Corrosion-Resistant Finish: Zinc plating helps protect against rust for indoor and outdoor projects.
  • Secure Grip: Square neck under round head locks into wood to prevent bolt rotation during tightening.
  • Standard Thread: 1/4-20 UNC right-hand threads for compatibility with common nuts and washers.
  • Reliable Strength: Grade 2 steel construction for everyday structural fastening.
  • Contractor Pack: Bulk 100-count for efficient jobsite or shop replenishment.

Specifications Table:

Specification Details
Pack Quantity 100
Bolt Diameter 1/4 inch
Bolt Length 4-1/2 inches
Thread Size 1/4-20 UNC
Thread Style Right-hand
Head Style Round head, square neck (carriage)
Material Steel (Grade 2)
Exterior Finish Zinc-plated
Intended Use Wood connections
Item Weight (Pack) 6.6 lb
Product Dimensions (Package) 6.8 x 4.5 x 3.3 in
Measurement System Inch
Manufacturer Hillman Group
Part Number 240051

Frequently Asked Questions (FAQ):

Q: What size nut fits these bolts?
A: They are 1/4-20 UNC threads; use standard 1/4-20 nuts and washers.


Q: Are these suitable for outdoor use?
A: Yes, the zinc plating offers basic corrosion resistance; for harsh coastal environments, consider hot-dip galvanized or stainless.


Q: What materials are these designed for?
A: Primarily for wood connections; the square neck seats into wood to prevent spinning.


Q: What is the bolt length measured from?
A: Carriage bolt length is measured from under the head to the end of the threads—these are 4-1/2 inches long.


Q: What grade are the bolts?
A: Grade 2 steel, suitable for general-purpose fastening.


Quiet Strength for Clean, Classic Joinery

There’s an elegant simplicity to a round carriage head—smooth, unobtrusive, and impeccably functional. The zinc-plated finish delivers a crisp, hardware-store sheen that complements pale woods and painted surfaces alike. Use these in rhythm along a garden gate or bench for a tailored, crafted look. It’s the understated detail that elevates everyday builds into refined, lasting pieces.


Equip your next build with these zinc-plated carriage bolts and enjoy secure, professional results in every connection.

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