SKU: 98086444027

Hillman 5/16 in. x 3-1/2 in. Zinc-Plated Steel Carriage Bolt, 50-Pack

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Description

Hillman 5/16 in. x 3-1/2 in. Zinc-Plated Steel Carriage Bolt, 50-Pack5 16 in. x 3 1 2 in. Zinc Plated Carriage Bolts (50 Pack) Durable zinc plated steel carriage bolts for secure fastening in wood and metal projects. The rounded head and square neck prevent turning for a clean, finished look. Pack of 50 for bulk jobs and reliable performance. Key Features: Corrosion Resistant Finish: Zinc plated steel resists rust for indoor outdoor use Secure Hold: Square neck under domed head prevents bolt rotation during tightening

5/16 in. x 3-1/2 in. Zinc-Plated Carriage Bolts (50-Pack)

Durable zinc-plated steel carriage bolts for secure fastening in wood and metal projects. The rounded head and square neck prevent turning for a clean, finished look. Pack of 50 for bulk jobs and reliable performance.


Key Features:

  • Corrosion-Resistant Finish: Zinc-plated steel resists rust for indoor/outdoor use
  • Secure Hold: Square neck under domed head prevents bolt rotation during tightening
  • Versatile Size: 5/16 in. diameter by 3-1/2 in. length suits a wide range of builds
  • Bulk Value: 50-pack ideal for decking, fencing, and general construction
  • Trusted Quality: Manufactured by Hillman for consistent performance

Specifications Table:

Specification Details
Diameter 5/16 in.
Length 3-1/2 in.
Material Steel
Finish Zinc-plated
Head Type Domed (carriage) head
Neck Type Square neck
Pack Quantity 50
Product Dimensions (package) 8.6 x 4.3 x 3.5 in
Package Weight 8.2 lb
Brand Hillman

Frequently Asked Questions (FAQ):

Q: What material are these bolts made from?
A: Zinc-plated steel for strength and corrosion resistance.


Q: Do these bolts include nuts or washers?
A: Nuts and washers are typically sold separately; verify your project needs.


Q: Where are carriage bolts best used?
A: Commonly in wood connections such as decking, fencing, and furniture where a smooth, rounded head is preferred.


Q: How does the square neck help during installation?
A: It locks into the material to prevent the bolt from turning while you tighten the nut.


Q: Are these suitable for outdoor applications?
A: Yes, the zinc plating offers rust resistance suitable for many outdoor uses; for highly corrosive environments, consider stainless or hot-dip galvanized options.


A Polished, Industrial Touch with Everyday Strength

These zinc-plated carriage bolts bring a refined industrial detail to any project, marrying function with a clean, domed silhouette. The gleam of the finish adds subtle sophistication while the square neck ensures a seamless, secure set. Style them with natural woods and matte black hardware for a modern, grounded look. Essential hardware that elevates craftsmanship to a luxurious standard.


Secure your projects with Hillman’s reliable, corrosion-resistant carriage bolts—add this 50-pack to your toolkit 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: 98086444027

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pchowla
Port Orchard, US
★★★★★ 3
Looks nice but not comfortable
Size: 9.5, Color: Black
Look nice, fit well, but there is no cushion on the sole so feet hurt after wearing for even a short time.
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Reviewed in the United States on April 14, 2026
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Lori
Dallas, US
★★★★★ 5
Nice shoes
Size: 11, Color: Black
bought for my husband to wear to a funeral. Since he would only be wearing them for a day as we don't dress up ever he didn't want to spend allot. The shoes themselves look more expensive than they were and he said that they were comfortable enough. Not sure how well they will last with daily wear. the services had allot of dirt and the shoes were easy to wipe clean with a damp towel
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Reviewed in the United States on October 15, 2025
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Dariusz Grabowiecki
Birmingham, US
★★★★★ 5
Amazon Essentials
Size: 8, Color: Black
Good ,nice
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Reviewed in the United States on April 5, 2026
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George M. Occhipinti
Draper, US
★★★★★ 5
Very handsome shoe
Size: 7, Color: Brown
Beautifully made shoe. Comfortable, great fit. Very handsome on foot. Can wear with anything. Very pleased
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Reviewed in the United States on April 18, 2026
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toddt0606DC
Houston, US
★★★★★ 5
From a Long Time Hard Sole Dress Shoe Wearer, These are a Must Have!
Size: 12, Color: Blue
I have been wearing hard sole dress shoes for decades and with the full COVID shift to dressing super casual in a professional work environment, I was in the market for some more casual let dressy shoes that were a heck of a lot more comfortable and flexible than my hard soles so I thought I would give this brand and style a try. Oh man, I'm in love. These give you that dressier look yet you can totally dress them down with jeans or cordouroys, so versatile. As I did with my hard soles, I inserted one of my Nike Air in soles and man, these are so comfortable I bought navy and brown! I usually wear these with thin dress socks and they go perfectly with any type of suit set, a no brainer purchase here. I'm a 12 and bought a 12, perfect fit, not to skinny, not to wide, just right. Bottom sole grip is impressive, never felt unstable, solid rubber sole here. I decided to lace them up so there are not tying and the tongue does slip down sometimes so with this feature, best to use a metal shoe horn, then it's super easy to slide them on, they seem to take a beating and remain clean too, I've definitely scuffed them up against many things and still no damage, it's crazy, must have a great finish. NOTE TO Note to MANUFACTURER/SELLER - You need to make a version in GRAY in this specific style and I will buy them instantly, and I assure you they will be incredibly popular! Really not sure why there isn't more colors in these like gray, shades of gray, maybe red, lighter blue and maybe some with different tones in standard colors. Casual dress shoe wearers are looking for new and exciting bold colors so this is the perfect shoe type to deliver on that.
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Reviewed in the United States on January 6, 2024

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