---
product_id: 170150419
title: "(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg"
brand: "fullerkreg"
price: "₩41961"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/170150419-5-sets-5-16-18x4-stainless-steel-hex-head-screws
store_origin: KR
region: South Korea
---

# 5/16" Diameter 4" Length 18-8 Stainless Steel (5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg

**Brand:** fullerkreg
**Price:** ₩41961
**Availability:** ✅ In Stock

## Summary

> 🔧 Fasten with Confidence: The Ultimate Hex Bolt Set!

## Quick Answers

- **What is this?** (5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg by fullerkreg
- **How much does it cost?** ₩41961 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/170150419-5-sets-5-16-18x4-stainless-steel-hex-head-screws)

## Best For

- fullerkreg enthusiasts

## Why This Product

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

## Key Features

- • **📦 Complete Set:** Includes bolts, hex nuts, flat washers, and lock washers for all your fastening needs.
- • **📏 Precision Engineering:** Meets ASME specifications for consistent quality and performance.
- • **🔄 Fully Threaded Design:** Ensures a secure fit for complete insertion into threaded holes.
- • **🔒 Heavy-Duty Reliability:** Engineered for robust fastening in demanding applications.
- • **🌧️ Corrosion Resistance:** Crafted from 18-8 stainless steel for superior durability.

## Overview

This 5-set collection of 5/16-18x4" stainless steel hex head screws and accompanying hardware is designed for heavy-duty applications. Made from durable 18-8 stainless steel, these fully threaded bolts ensure a secure fit and meet ASME specifications, making them ideal for professional use. Each package includes everything you need for reliable fastening, including hex nuts, flat washers, and split lock washers.

## Description

(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg

## Features

- A Hexagon Bolt is a threaded fastener with a hexagonal head shape, and are designed to be installed using a spanner. Hexagon bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts are also generally available in larger sizes than alternative fasteners.
- As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together.
- Made from 18-8 stainless steel, FullerkregⓇ brand screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
- Screws that meet ASME specifications comply with these dimensional standards.DIMENSIONS: Diameter: 5/16" | Length: 4" | Thread Type: 18 tpi Coarse Thread (Standard)
- Package includes ten each of bolts, hex nuts , Flat & Lock washers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Head Style | Hex |
| Shape | Cylindrical |
| Item Diameter | 0.31 Inches |
| Thread Size | 5/16"-18 |
| Number of Pieces | 5 |
| Compatible groove diameter | 0.31 Inches |
| Grade Rating | 等级 B8 |
| Manufacturer | Fullerdongluo |
| UPC | 799862376933 |
| Part Number | 1 |
| Item Weight | 8.1 ounces |
| Item model number | 1 |
| Cutting Diameter | 0.31 Inches |
| Measurement System | Inch |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Size:** (5 Sets) 5/16x4"
- **Color:** Plain
- **Material:** Stainless Steel
- **Brand:** Fullerkreg
- **Fastener Type:** Bolt

## Images

![(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 1](https://m.media-amazon.com/images/I/81XHEf9ORHL.jpg)
![(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 2](https://m.media-amazon.com/images/I/71KSvoS4shL.jpg)
![(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 3](https://m.media-amazon.com/images/I/81JQ3ipokXL.jpg)
![(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 4](https://m.media-amazon.com/images/I/811Vua-HkoL.jpg)
![(5 Sets) 5/16-18x4 Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg - Image 5](https://m.media-amazon.com/images/I/81I1JA0jFML.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Are these zinc coated? I wanna use them in a grill but im not sure if they will give off any bad fumes when exposed to high heat.**
A: They are Stainless Steel, not zinc coated

**Q: how many total bolts are there? is it 6 bolts like in the picture or is it 5 sets of 6 bolts for a total of 30 bolts?**
A: qty 6, not 30

**Q: Are the nuts and washers stainless steel too?**
A: Yes of course.  All are stainless steel.

**Q: does it come in 1/4"?**
A: I use them as wheel axils on a travel cart; so far since I bought them over a month ago; still working, not broken.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome bolts!
*by A***R on December 16, 2024*

I recently needed a robust fastening solution for a project that required strength and corrosion resistance, and this 5/16-18x1-1/4" Stainless Steel Hex Head Screw and Nut Kit with 5/16 Nuts and 5/16 Fender Flat Washers proved to be exactly what I needed. I'm extremely impressed with the quality and performance of these fasteners.Right out of the box, you can tell these are made to last. The stainless steel construction is top-notch, giving them excellent resistance to rust and corrosion, which is crucial for outdoor and other demanding applications. What really stood out to me was how incredibly strong these screws and nuts are. I put them to the test in a demanding application, and they held up flawlessly. There was no stripping, bending, or any signs of weakness, even under significant stress.The inclusion of the fender washers is a great bonus. They provide a wider bearing surface, distributing the load more evenly and preventing damage to the materials being fastened. This added stability and security is a big plus.The threads on the screws are clean and precisely cut, making for smooth and easy installation. The nuts fit perfectly, and the whole assembly feels incredibly solid and secure once tightened.If you're looking for a reliable and incredibly strong fastening solution, especially one that can withstand harsh conditions, I highly recommend this 5/16-18x1-1/4" Stainless Steel Hex Head Screw and Nut Kit. The quality and strength of these fasteners are exceptional, and they've exceeded my expectations in every way. Great set of bolts!

### ⭐⭐⭐⭐⭐ Nice bolt sets, packaged well, arrived quickly.
*by W***A on October 29, 2024*

We're using this for customizing a hot tub and due to the chlorine and massive amounts of water, stainless was the best option.These arrived quickly and proved to be perfect for our application. The ratcheted up nice and tight, without breaking or stripping and being stainless, rust and corrosion are not a concern.The price for 10 sets is quite fair, so it's safe to say these are good bargain for a specialty fastener.

### ⭐⭐⭐⭐⭐ Nuts &Bolts
*by C***. on March 7, 2025*

Order delivered quickly. Good quality material positive in their production and package.Highly recommend this product.

## Frequently Bought Together

- (5 Sets) 5/16-18x4" Stainless Steel Hex Head Screws Bolts, Hex Machine Nuts, Fender Flat Washer& Split Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg
- (4 Sets) 3/8-16x4 Stainless Steel Hex Head Screws Bolts, Nuts, Flat & Lock Washers, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg
- Mywish (10 Sets) 1/4-20x4 Hex Head Assorted Screws Nuts and Bolts with Flat & Lock Washers, 304 Stainless Steel 18-8, Fully Threaded, 1/4 Bolt Metric Bolt Assortment

---

## 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.kr/products/170150419-5-sets-5-16-18x4-stainless-steel-hex-head-screws](https://www.desertcart.kr/products/170150419-5-sets-5-16-18x4-stainless-steel-hex-head-screws)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-11*