SKU: 98086444027

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

Sale price$40.44 Regular price$44.93
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 2214 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Doogie Howser
Birmingham, US
★★★★★ 5
Fairly stable. Good value for the price
Size: 16 Inch, Size: 16 Inch
Great set of stands. You have to tighten them pretty snugly to minimize wobble. Given they are metal they’ll have a little bit more give than solid wood. Even so, a tall desk I built with them remains stable and level.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 22, 2025
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
Quality
Quality item. Using a butcher block on top to make a desk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
A
Verified Purchase
abur
Whiting, US
★★★★★ 5
I love it!!!
Size: M Desk Unfinished 3/4-in and 1/2-in
Easy to assemble, all the pieces were in the box. I set everything out to be sure. Instructions were easy and clear, took about 10 min to put together. Seems to be quality pipe, strong stable build even at just hand tight. When I put the desk top on it was already level so bonus there. This kit is a great value, before I found the M desk I was looking on Pinterest for pipe leg designs thinking a trip to the hardware store and I could make it for cheaper, which was not the case. I 100% will recommend, and will purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2020
N
Verified Purchase
Nancy
Los Angeles, US
★★★★★ 5
Real steel pipe
Size: O Desk Unfinished 3/4-in and 1/2-in
This pipe table leg set was great. It's real steel pipe like from the hardware store. It does have a layer of oil on it so that must be stripped using dawn or some other degreaser before handleing and painting. It is also offset in the middle bar so if you use it as a desk you get more leg clearance. I used it as a table base so I bought matching middle braces to set the middle support in the center of the table. Once together it looks great. I highly recommend getting this if you want a good quality pipe base.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2023
K
Verified Purchase
Kim R-A
Belleville, US
★★★★★ 5
Price / Quality - Office Desk - Perfect
Size: H Desk Unfinished 3/4-in and 1/2-in
Purchased two sets to create a custom L shaped desk for the office. Placed a pine stained top. Perfect to handle a monitor, multiple laptops, normal office equipment. Extra benefit is the cross piece at the bottom as a foot rest. Very sturdy while sitting on carpet. Compared to normal pipe material purchased in large box store -- could not have asked for a better product for the price. Looking at other products for additional projects for around the house for the product and vendor. - Highly Recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2021

recommand products