SKU: 28520240179

Hillman 3/8 in. x 3 in. Zinc-Plated Steel Carriage Bolts, 50-Pack

Sale price$28.83 Regular price$32.03
Save 10%

Pay in installments of $8.01 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Hillman 3/8 in. x 3 in. Zinc-Plated Steel Carriage Bolts, 50-Pack3 8 in. x 3 in. Zinc Plated Carriage Bolts (50 Pack) Durable Hillman carriage bolts made from zinc plated steel for rust resistant fastening in wood to wood or wood to metal applications. The rounded head creates a smooth, semi flush finish while the square neck locks into wood to prevent spinning. Key Features: Rust Resistant Zinc Plating: Helps protect against corrosion for long lasting performance Self Locking Square Neck: Prevents bolt rotation in

3/8 in. x 3 in. Zinc-Plated Carriage Bolts (50-Pack)

Durable Hillman carriage bolts made from zinc-plated steel for rust-resistant fastening in wood-to-wood or wood-to-metal applications. The rounded head creates a smooth, semi-flush finish while the square neck locks into wood to prevent spinning.


Key Features:

  • Rust-Resistant Zinc Plating: Helps protect against corrosion for long-lasting performance
  • Self-Locking Square Neck: Prevents bolt rotation in wood for easier installation
  • Smooth, Low-Profile Head: Creates a semi-flush finish without a separate washer
  • Coarse Thread, SAE Grade 2: Reliable grip for general-purpose fastening
  • Bulk 50-Pack: Convenient boxed packaging for projects and job sites

Specifications Table:

Specification Details
Diameter 3/8 in
Length 3 in
Material Steel
Finish Zinc-Plated
Grade 2
Thread Type Coarse
Unit of Measurement SAE
Packaging Type Boxed
Number in Package 50
Each Weight 5.300 lb
Product Type Carriage Bolt
Alternative UPC 037504830963

Frequently Asked Questions (FAQ):

Q: What materials are these bolts best suited for?
A: Designed to fasten a wooden face to wood or metal frames; the square neck bites into wood to prevent spinning.


Q: Can these be used outdoors?
A: Zinc plating offers rust resistance but may not be ideal for all exterior projects; consider hot-dip galvanized for harsh outdoor environments.


Q: Do I need a washer under the head?
A: Typically no—the rounded carriage head provides a semi-flush finish that often eliminates the need for a washer.


Q: What thread type do they have?
A: Coarse thread per SAE standards, suitable for general-purpose fastening.


Q: What size and length are included?
A: Each bolt is 3/8 inch diameter by 3 inches long; this package contains 50 bolts.


A Clean, Crafted Finish for Timber Details

These zinc-plated carriage bolts bring a tailored, streamlined note to carpentry—perfect for benches, gates, and statement woodwork. The domed head offers a refined, flush look while the square neck anchors with confidence. Pair them with oiled oak or painted pine to let hardware quietly elevate the piece. A small detail with big impact, they’re the finishing touch of effortless, polished living.


Secure your project with reliable, rust-resistant carriage bolts—add this 50-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: 28520240179

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 28 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
N
Verified Purchase
Nwoalezea Asong
Cuba, US
★★★★★ 5
Great
Material Type: Plastic, Material Type: Plastic
Great value
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2026
R
Verified Purchase
Ram
West Palm Beach, US
★★★★★ 5
Good value
Material Type: Plastic
Good quality disposable spoons. Sturdy and light. Good size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2025
M
Verified Purchase
M. Freeman
Phoenix, US
★★★★★ 5
As described.
Material Type: Plastic
As described.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
A
Verified Purchase
Asad
Massapequa, US
★★★★★ 5
Nice n Robust
Material Type: Plastic
I’ve been buying these spoons for at least 5 years. They were the best before, and they are the BEST now. Other companies on Amazon sell similar spoons for a much cheaper price. They assert that their spoons are “heavyweight” spoons. Whoever, when you try to use their spoons to get yogurt out from the container, they fold like paper. These companies should be banned from Amazon.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2023
K
Verified Purchase
Ken Wilson
Los Angeles, US
★★★★★ 5
Good value.
Material Type: Plastic
Very convenient and great price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 23, 2025

recommand products