Hillman 3/8 in. x 4-1/2 in. Zinc-Plated Steel Carriage Bolt, 50-Pack
Regular price $29.99Hillman Zinc-Plated 3/8 in. x 4-1/2 in. Carriage Bolts (50-Pack)
Durable zinc-plated steel carriage bolts for fastening wood-to-wood or wood-to-metal projects. The round head with square neck locks into wood for a clean, semi-flush finish and resists spinning during installation. Ideal for decks, fences, and general construction.
Key Features:
- Reliable Wood-to-Metal Fastening: Square neck locks into wood to prevent spinning and provide secure connections
- Clean, Semi-Flush Finish: Rounded head eliminates the need for a washer in many applications
- Corrosion-Resistant Zinc Plating: Provides moderate rust resistance and a consistent silver finish
- Standard Threading: 3/8"-16 coarse right-hand threads fit common nuts and hardware
- Bulk Value Pack: 50 bolts per pack for larger builds and repeat projects
Specifications Table:
| Specification | Details |
|---|---|
| Material | Steel, zinc-plated (Alloy Steel listed by manufacturer) |
| Finish | Zinc-plated |
| Color | Silver/Zinc |
| Diameter | 3/8 inch (0.38 in) |
| Length | 4-1/2 inch |
| Thread Size | 3/8"-16 |
| Thread Type | UNC (coarse) |
| Thread Style | Right-hand |
| Head Type | Round |
| Neck | Square, self-locking |
| Manufacturer Grade | Grade 2 |
| Item Weight | 6.45 lb (pack) |
| Number of Pieces | 50 |
| Usage | Wood-to-wood or wood-to-metal fastening |
| Style | 50-Pack |
| Part Number | 240183 |
| UPC | 008236087031 |
| Item Package Quantity | 1 pack |
| Measurement System | Inch |
Frequently Asked Questions (FAQ):
Q: What materials can these carriage bolts be used with?
A: Designed for wood-to-wood and wood-to-metal fastening applications.
Q: Do I need a special tool to hold the bolt when tightening?
A: No— the square underside of the head locks into the wood to prevent spinning, allowing tightening from the nut side.
Q: Are these suitable for outdoor use?
A: The zinc plating offers moderate corrosion resistance; for harsh coastal or long-term outdoor exposure, consider galvanized or stainless options.
Q: What nuts should I use with these bolts?
A: Use 3/8"-16 coarse-thread nuts and compatible washers if needed.
Q: What is the length and diameter?
A: Each bolt is 3/8 inch diameter and 4-1/2 inches long.
A Polished, Workhorse Fastener for Timeless Wood Builds
These zinc-plated carriage bolts bring a refined, purposeful gleam to carpentry, anchoring boards with a tidy, rounded head that sits beautifully flush. The square neck detail is the hero—subtle yet decisive, keeping lines clean and hardware discreet. Style them across deck balusters or cabinetry jigs for a unified, tailored look. Essential hardware that quietly elevates craftsmanship and durability in every space.
AI Review Summary:
Across verified reviews, customers praise the consistent quality and value of the 50-pack, noting clean threads and reliable fit with 3/8"-16 nuts. Many highlight the square neck’s effective bite into wood, making installation straightforward and preventing bolt spin. The zinc finish is appreciated for its neat appearance and moderate corrosion resistance, though a minority recommend galvanized or stainless options for harsh outdoor conditions. Occasional feedback mentions minor variations in head stamping or finish, but performance remains solid. Representative quotes: “Perfect for deck and fence projects—threads were clean and every bolt usable.” “Square shoulder locks in great; no need to hold the head.” “Zinc is fine for most jobs, but I’d go galvanized near the ocean.”
Secure your next build with these dependable Hillman carriage bolts—add the 50-pack to your cart today.
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