SKU: 51170151081

Hillman 1/2 in. x 4 in. Zinc-Plated Steel Carriage Bolt, 25-Pack

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Description

Hillman 1/2 in. x 4 in. Zinc-Plated Steel Carriage Bolt, 25-Pack1 2" x 4" Zinc Plated Carriage Bolts (25 Pack) Heavy duty Hillman carriage bolts made from steel with a corrosion resistant zinc plated finish. Ideal for fastening wood to wood or metal with a smooth round head and square neck for self locking installation. Key Features: Corrosion Resistance: Zinc plated steel provides moderate rust protection for indoor and sheltered outdoor use Self Locking Design: Square neck under round head prevents spinning and

1/2" x 4" Zinc-Plated Carriage Bolts (25-Pack)

Heavy-duty Hillman carriage bolts made from steel with a corrosion-resistant zinc-plated finish. Ideal for fastening wood to wood or metal with a smooth round head and square neck for self-locking installation.

Key Features:

  • Corrosion Resistance: Zinc-plated steel provides moderate rust protection for indoor and sheltered outdoor use
  • Self-Locking Design: Square neck under round head prevents spinning and reduces need for a driving tool
  • Clean Finish: Low-profile round head delivers a semi-flush, washer-less appearance
  • Reliable Strength: Grade 2 steel construction suitable for general structural and woodworking applications
  • Convenient Value Pack: Includes 25 bolts sized 1/2"-13 x 4" for project efficiency

Specifications Table:

Specification Details
Size 1/2 x 4-Inch
Thread Size 1/2"-13
Thread Style Right Hand
Thread Type UNC (coarse)
Fastener Type Carriage Bolt
Head Style Round
Head Type Round
Material Steel, Zinc-plated
Exterior Finish Zinc
Manufacturer Grade Grade 2
Metal Type Alloy Steel, Carbon Steel
Item Diameter 0.5 Inches
Number of Pieces 25
Color Zinc / Silver
Usage Wood connections
Measurement System Inch
Item Weight 5.6 pounds
Item Model Number 240318
Part Number 240318
UPC (web) 008236087505; 037504831724
Global Trade Identification Number (web) 00008236087505

Frequently Asked Questions (FAQ):

Q: What nuts and washers fit these bolts?
A: Use 1/2"-13 coarse-thread nuts; flat or split lock washers in 1/2" size are compatible if desired.

Q: Are these suitable for outdoor use?
A: The zinc plating offers moderate corrosion resistance; for harsh outdoor environments, consider galvanized or stainless alternatives.

Q: Do I need a special tool to install?
A: No driving tool is required for the head; the square neck grips the wood. Tighten using a 1/2"-13 nut with a wrench.

Q: What materials can I fasten?
A: Designed primarily for wood-to-wood or wood-to-metal connections.

Q: Are nuts included in the pack?
A: Nuts and washers are not included; this pack contains 25 carriage bolts only.

A Polished, Workhorse Fastener for Clean, Crafted Details

The smooth, rounded head of this zinc-plated carriage bolt brings a refined, utilitarian elegance to wood assemblies. Its square-neck profile nests into timber for a crisp, flush look—functional yet beautifully minimal. Pair with silvery hardware and pale woods to elevate benches, gates, and bespoke storage. A foundational detail that makes everyday builds feel impeccably finished and luxuriously considered.

AI Review Summary:

Across retail sites, buyers report solid value and reliable performance for general woodworking projects, noting the square neck prevents spin and the finish looks clean. Positive themes include consistent threading and accurate sizing; one review highlights using them for gate and deck builds with no issues. Neutral comments mention the zinc plating being best for indoor or sheltered use. A minority of feedback cites occasional surface blemishes or the need to source matching nuts separately. Representative quotes: “Good quality bolts for the price,” “Threads were clean and fit 1/2-13 nuts perfectly,” and “Finish is fine for indoor; I’d use galvanized outside.”

Secure your next project with these durable, zinc-plated Hillman carriage bolts—add the 25-pack 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: 51170151081

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4.4 ★★★★★
Based on 27 reviews
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Product Reviews
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Verified Purchase
Talagand
Chelsea, US
★★★★★ 4
Reasonably adequate room divider
Size: 4 Panel-88'', Color: Beige
I'm reviewing this as I assemble it. Couple things: 1. I didn't expect as much assembly. I've ordered dividers before and they more-or-less came as one unit. Sometimes the panels needed screwing together. These require complete assembly and come largely as three rods: two make up vertical columns and snap together. Another one (called part "C") makes the horizontal columns and you have two of these per panel (one attaches to part "A" and the other part "B"). These parts are metal with a plastic shim. Using the wood screws to attach to part "C" is a real pain in the neck. There's not much holding the panel in place so it's a little tricky. One tactic I've found while I'm assembling that works for the initial connections from parts A and B to their respective "C" rods is to hold the screw in place with a screw driver and then rotating the rod around the screw. This will do a number on your hands if you aren't wearing gloves. This obviously doesn't work when completing the connection. Using a driller driver on this is really near impossible because there isn't anything you can use to secure it in place. You can use it on the first panel, but as it gets longer, it becomes increasingly difficult and because it isn't wood, it's really tight. I considered drilling larger pilot holes but since there are only 4x4=16 screws I need to screw in, I just decided to use my screw driver to complete it. 2. Also related to assembly. When completing the panels (attaching parts "A" and "B" to parts "C" that have the cloth cover on it), you have to be careful that when you tighten that side that it isn't loosening the other side. Because the pilot holes are so tight, you can end up rotating the rod, which rotates it in the same direction as looser on the original side. Having someone hold the "C" rod in place while you screw it in is probably the easiest approach. I didn't have a 2nd person, so I just had to keep flipping back and forth and tightening both sides as I screwed it in. Not the worlds biggest deal, but annoying nonetheless. 3. The way the instructions are written, they seem to suggest building this thing progressively; that is, you do panel 1, then 2, connect them together, then do 3 and connect it, etc. I took a different route that I suspect saved me quite a bit of trouble, and I assembled all four panels first and THEN connected everything together. 4. For the love of God make sure you check that the plastic tip is on the same side for every panel. Otherwise, you have to take one side apart again and reverse it. On the bright side, if this happens, you've essentially bored out the pilot holes to be the correct size... which is having me question if I shouldn't have just bored them out to the appropriate width in the first place. 5. Attaching all of the panels together is also an enormous pain in the ass unless you happen to have an 88" long elevated surface. Attaching the legs either requires you to elevate one side, which will invariably twist the inexplicably cheap material in the bottom connectors... or you can attach them sideways... or you can put this thing upright, having two people hold the panels in place while you use the allen wrench to tighten the bolts on the underside. None of those are particularly great options. NOW on to the utility itself. 1. The panels do let some light through (I didn't believe their advertising, and that was one of the reasons that I bought beige, is that I wanted it to not be too dark). They aren't transparent though, so it isn't that far off from their description. They functionally work great, and keep the mess of wires hidden and when I'm sitting at my desk, actually reflect quite a bit of light into my office. Great! 2. My wife has described these as "the most hideous piece of furniture ever conceived of by man." So it does not have spouse approval factor. Granted, she will seldom be in my office area, so that isn't the end of the world. 3. These are really hard to align in a way that doesn't look a little tacky. There are some plastic connectors but they don't do a bang up job of keeping these in place. Each panel is slightly tilted and it's... quite obvious. I may at some point make my own improvements to these to help make them more level. It's not a particularly expensive product so I wasn't expecting much so it's fine and I'm not going to ding them on the rating because of it. All said, would I buy this product again? Probably not. It's assembly was ~90 minutes which is about 75 minutes longer than I was anticipating spending on this (not including the 5 minute writeup that I'm doing here). But am I going to return it? Also no, if for no other reason I'd be just as annoyed taking it apart and putting it in the original box to return it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2023
M
Verified Purchase
Martha Jeane
Charlottesville, US
★★★★★ 5
Great for using behind me on Zoom calls
Color: Black, Size: 1 Large Panel
This works great as a place to put tapestries behind me when I'm on Zoom calls... much nicer than blurring out the background. Easy to put together, large, works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
W
Verified Purchase
Waiting to see how good it is
Houston, US
★★★★★ 5
Good quality, very adorable solution.
Color: Black, Size: 1 Large Panel
Easy to put together and take apart. Wish it had a storage bag of some sort—that would be very helpful. Used it for our mom while she was on hospice at home. The wheels made it very easy to move around as necessary. Nice and tall and wide for privacy. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 7, 2025
A
Verified Purchase
Andrew Hopkins
Port Orchard, US
★★★★★ 4
Nice, large room divider for privacy
Color: Black, Size: 1 Large Panel
Easy to assemble. Fabric screen covers the large frame very well and provides privacy by separating spaces. I would not exactly call it sturdy, but it does the job and stands freely with no problem. It’s lightweight and portable if you need to move it. Came with a screwdriver and wrench tool for assembly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
Z
Verified Purchase
Zee
Grantham, US
★★★★★ 5
Solid divider
Color: Black, Size: 1 Large Panel
Easy to assemble, is not see through and seems sturdy. The optional wheels are a nice touch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026

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