Hillman 5/16 in. x 4-1/2 in. Zinc-Plated Steel Carriage Bolts, 50-Pack
Regular price $29.995/16 in. x 4-1/2 in. Zinc Carriage Bolts (50-Pack)
Durable zinc-plated steel carriage bolts for fastening wood to wood or metal with a smooth, low-profile head. The square shoulder locks into the material to prevent spinning, delivering a clean, semi-flush finish for carts, fences, and general projects.
Key Features:
- Multi-Material Use: Securely fastens wood to wood or metal frames
- Low-Profile Head: Smooth, domed head sits semi-flush for a clean look in tight spaces
- Spin-Free Installation: Square shoulder bites into wood to prevent bolt rotation—no flat washer needed
- Corrosion Resistance: Zinc plating provides moderate protection against rust for indoor/outdoor projects
- Project Ready Pack: 50 pieces for consistent sizing across larger builds
Specifications Table:
| Specification | Details |
|---|---|
| Diameter | 5/16 in. |
| Length | 4-1/2 in. |
| Thread Size | 5/16-18 |
| Material | Steel |
| Finish | Zinc-plated |
| Head Type | Domed, low-profile carriage head |
| Shoulder | Square shoulder to lock into material |
| Application | Fastens a wood face to wood or metal |
| Package Quantity | 50 pieces |
| Brand | Hillman |
| Manufacturer SKU | 240114 |
Frequently Asked Questions (FAQ):
Q: What size drill bit should I use?
A: Pre-drill a hole that matches the 5/16 in. bolt diameter for best results.
Q: Are nuts included?
A: Nuts are typically sold separately; verify your kit contents before purchasing.
Q: Can these be used outdoors?
A: Zinc plating offers moderate corrosion resistance and is suitable for many outdoor applications, but for harsh or coastal environments consider hot-dipped galvanized or stainless steel.
Q: What tools are required for installation?
A: Insert the square shoulder into the pre-drilled hole and tighten a nut on the opposite side with a wrench; the domed head does not require a driver.
Q: What is the thread type?
A: 5/16 in.-18 coarse threads.
A Clean, Domed Detail for Honest, Functional Joinery
There’s a quiet elegance in the soft dome of a carriage bolt—it punctuates woodwork with a subtle, crafted note. The square shoulder locks into timber, keeping the surface pristine while delivering reliable strength. Try them along a garden cart or a reclaimed fence panel for a streamlined, intentional accent. Functional and refined, they’re a small luxury that elevates everyday builds.
Outfit your next project with these reliable zinc carriage bolts and enjoy clean looks with lasting hold—add the 50-pack to your cart now.
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