---
product_id: 161015120
title: "5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS"
brand: "mewudecor"
price: "100.45 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Mewu Decor"
url: https://www.desertcart.tn/products/161015120-5-16-18-serrated-flange-hex-lock-nuts-stainless-steel
store_origin: TN
region: Tunisia
---

# 5/16-18 coarse thread pitch Integrated serrated flange lock washer 304 stainless steel corrosion resistance 5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS

**Brand:** mewudecor
**Price:** 100.45 DT
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock it down with confidence — the last nuts you’ll ever need!

## Quick Answers

- **What is this?** 5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS by mewudecor
- **How much does it cost?** 100.45 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/161015120-5-16-18-serrated-flange-hex-lock-nuts-stainless-steel)

## Best For

- mewudecor enthusiasts

## Why This Product

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

## Key Features

- • **Sleek & Bright Finish:** Polished stainless steel surface adds a clean, professional look to your hardware setup.
- • **Vibration-Proof Locking:** Serrated flange design locks nuts in place, eliminating loosening under stress or movement.
- • **Precision Fit, Zero Slip:** 5/16-18 coarse threads ensure secure fastening with superior grip.
- • **Ready for Heavy-Duty Use:** Pack of 50 nuts means you’re always prepared for professional-grade projects or urgent repairs.
- • **Built to Last in Any Environment:** Premium 18-8 (304) stainless steel resists rust and chemical damage for long-term durability.

## Overview

These 5/16-18 serrated flange hex lock nuts are crafted from high-grade 18-8 (304) stainless steel, offering exceptional corrosion resistance and durability. Featuring an integrated serrated flange that acts as a built-in lock washer, they prevent loosening from vibration, making them ideal for wood, wet environments, and heavy-duty applications. Sold in a convenient 50-piece pack with a bright finish, these nuts combine professional reliability with lasting performance.

## Description

Product Specification Flange Nuts have flat and serrated designs designed to act as an integrated, non-spinning washer, eliminating the need for a separate washer. Serrated flange nuts are fabricated with a built in serrated washer that resist loosening due to vibration. Flange Nut Size 5/16-18 High Quality Material 18-8 (304) Stainless Steel Inside Diameter 5/16 Inch Pitch Size 18 Threads per Inch (Coarse Thread) Package Included 50 x Serrated Flange Hex Lock Nuts 5/16-18 Warranty MewuDecor hardware has the highest quality on the market. Buy with confidence. Money back or exchange guarranteed.

Review: Great quality - Exactly as described great product at a great price
Review: diesel glow plug nuts.Perfect, Stainless steel (rust free) replacement for - These worked great for what I needed. Perfect rust free replacement for glow plug nuts on Duramax engines. GM & others stopped including new nuts with the glow plugs. They charge $1ea for them! But they're also tiny and non magnetic. That means you're in trouble if you drop one and lose it! Also works on Ford Powerstroke glow plugs.

## Features

- Made of high quality stainless steel 18-8 (304) which offers a high level of chemical and corrosion resistance.
- Nut Type: Hex Serrated Flange Nut.
- Inside Diameter: 5/16 Inch; Thread Size: 18 Threads per Inch.
- Package Included: 50 x Serrated Flange Hex Lock Nuts 5/16-18.
- Flange Nuts are great to have around for use in wood and wet environments.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07JLTQD71 |
| Best Sellers Rank | #13,093 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Flange Nuts |
| Brand | MewuDecor |
| Color | Silver |
| Compatible Groove Diameter | 0.31 Inches |
| Customer Reviews | 4.8 out of 5 stars 1,031 Reviews |
| Drive Style | External Hex |
| Exterior Finish | Bright Finish |
| Fastener Type | Flange |
| Finish Types | Painted |
| Grade Rating | commercial |
| Inside Thread Size | 5/16 18 |
| Item Diameter | 0.31 Inches |
| Manufacturer | MewuDecor |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Model | FHN51618-50N |
| Number Of Items | 50 |
| Number of Pieces | 50 |
| Part Number | FHN51618-50N |
| Screw Head Style | Flat |
| Size Name | 5/16-18 |
| Thread Class | Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | 5/16-18 |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse (Unc) |
| UPC | 723585251338 |

## Product Details

- **Color:** Silver
- **Exterior Finish:** Bright Finish
- **Fastener Type:** Flange
- **Material:** Stainless Steel
- **Thread Size:** 5/16-18

## Images

![5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS - Image 1](https://m.media-amazon.com/images/I/61-72Cw7vbL.jpg)
![5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS - Image 2](https://m.media-amazon.com/images/I/51wgj7-6QDL.jpg)
![5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS - Image 3](https://m.media-amazon.com/images/I/61aukfCwviL.jpg)
![5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS - Image 4](https://m.media-amazon.com/images/I/61r5pLi63gL.jpg)
![5/16-18 Serrated Flange Hex Lock Nuts, Stainless Steel 18-8 (304), Bright Finish, 50 PCS - Image 5](https://m.media-amazon.com/images/I/61iltr1b3ML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality
*by J***E on March 27, 2026*

Exactly as described great product at a great price

### ⭐⭐⭐⭐⭐ diesel glow plug nuts.Perfect, Stainless steel (rust free) replacement for
*by R***N on August 16, 2025*

These worked great for what I needed. Perfect rust free replacement for glow plug nuts on Duramax engines. GM & others stopped including new nuts with the glow plugs. They charge $1ea for them! But they're also tiny and non magnetic. That means you're in trouble if you drop one and lose it! Also works on Ford Powerstroke glow plugs.

### ⭐⭐⭐⭐⭐ Quality
*by J***L on May 3, 2026*

Great Quality. Great Value.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-17*