---
product_id: 290008495
title: "3/8\"-16 x 4-1/2\" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot"
brand: "fastener depot"
price: "962 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/290008495-3-8-16-x-4-1-2-50-pack-galvanized
store_origin: RO
region: Romania
---

# 3/8"-16 coarse thread for secure fastening 60,000 PSI tensile strength for heavy-duty durability Hot-dip galvanized for superior corrosion resistance 3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot

**Brand:** fastener depot
**Price:** 962 Lei
**Availability:** ✅ In Stock

## Summary

> 🔩 Secure your projects with strength and style!

## Quick Answers

- **What is this?** 3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot by fastener depot
- **How much does it cost?** 962 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/290008495-3-8-16-x-4-1-2-50-pack-galvanized)

## Best For

- fastener depot enthusiasts

## Why This Product

- Trusted fastener depot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Grade 307A steel with 60,000 PSI tensile strength ensures your build stands the test of time.
- • **Smooth & Sleek:** Rounded carriage bolt heads provide a snag-free, professional finish every time.
- • **Rock-Solid Hold:** Coarse thread and square shoulder lock bolts firmly in place—no slipping, no fuss.
- • **Weather Warrior:** Hot-dip galvanized finish delivers unbeatable rust protection for outdoor projects.
- • **Complete Kit Convenience:** Includes 50 USS flat washers and 50 hex nuts—everything you need in one pack.

## Overview

This 50-pack of 3/8"-16 x 4-1/2" Grade 307A galvanized carriage bolts features coarse threading and a hot-dip galvanized finish for superior corrosion resistance. Each bolt meets ASTM standards and offers a minimum tensile strength of 60,000 PSI. The kit includes matching USS flat washers and hex nuts, making it a complete, durable fastening solution ideal for exterior wood-to-wood or wood-to-metal applications.

## Description

Carriage bolts are designed to fasten a wooden face to either wood or metal. Push into a hole the same size as the shank and then hammered in the rest of the way, where the square shoulder locks it firmly in place eliminating the need for a washer. Used whenever a smooth finish surface is needed so that nothing becomes snagged on the fastener. Galvanized finish allows for greater corrosion resistance.

## Features

- Coarse Thread
- Superior Corrosion Resistance
- Hot Dipped Galvanized Finish
- Grade A
- Full Thread
- Minimum Tensile Strength: 60,000 PSI
- Coating Thickness: for sizes 3/8“ & under : 0.0017” (43 microns) | for sizes over 3/8“ : 0.0020” (50 microns)
- Specifications Met: ASTM F2329/F2329M or ASTM A153/A153M
- RoHS Compliant
- Kit Includes Nuts and Washers

## Product Details

- **Material:** Alloy Steel
- **Thread Size:** 3/8"-16
- **Exterior Finish:** Hot Dipped Galvanized
- **Manufacturer Grade:** Grade A
- **Head Style:** Round

## Images

![3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot - Image 1](https://m.media-amazon.com/images/I/618V94BM3NL.jpg)
![3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot - Image 2](https://m.media-amazon.com/images/I/61rkBI7018L.jpg)
![3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot - Image 3](https://m.media-amazon.com/images/I/61iQ5ScljCL.jpg)
![3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot - Image 4](https://m.media-amazon.com/images/I/619-waZGTJL.jpg)
![3/8"-16 x 4-1/2" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Flat Washers (50 pcs) and Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Fastener Depot - Image 5](https://m.media-amazon.com/images/I/71Whg5WoEXL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ro/products/290008495-3-8-16-x-4-1-2-50-pack-galvanized](https://www.desertcart.ro/products/290008495-3-8-16-x-4-1-2-50-pack-galvanized)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-05*