---
product_id: 613407009
title: "3/8\" x 7/8\" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4\" ID x 0.866\" OD x 0.078\" Thick(50Pcs)"
brand: "kansphy"
price: "€ 12.85"
currency: EUR
in_stock: true
reviews_count: 12
category: "Kansphy"
url: https://www.desertcart.sk/products/613407009-3-8-x-7-8-stainless-flat-washer-18-8
store_origin: SK
region: Slovakia
---

# 50 pcs 0.4" ID Corrosion resistant 3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs)

**Brand:** kansphy
**Price:** € 12.85
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Fastening Game!

## Quick Answers

- **What is this?** 3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs) by kansphy
- **How much does it cost?** € 12.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/613407009-3-8-x-7-8-stainless-flat-washer-18-8)

## Best For

- kansphy enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Value:** Comes in a pack of 50, ensuring you have enough for all your needs.
- • **Perfect Fit:** Designed for 3/8" and M10 bolts, ensuring a seamless connection.
- • **Versatile Use:** Ideal for both indoor and outdoor applications, ready for any project.
- • **Durable Material:** Crafted from 304 stainless steel for unmatched corrosion resistance.
- • **Load Distribution:** Effectively distributes loads of threaded bolts, screws, and nuts.

## Overview

This pack of 50 stainless steel flat washers features a 0.4" inside diameter and a 0.866" outside diameter, with a thickness of 0.078". Made from 304 stainless steel, these washers are designed for superior corrosion resistance, making them perfect for a variety of indoor and outdoor applications.

## Description

Product description

Review: Exactly What I Needed – Tough, Reliable, and Rust-Free! 🛠️🔩💧 - These 3/8" x 7/8" stainless flat washers have been a fantastic addition to my hardware stash. I’ve used them on a few outdoor and garage projects already, and I couldn’t be more pleased. The 18-8 stainless steel feels super solid and has held up beautifully, even in damp or weather-exposed areas—no signs of rust at all! 🌧️💪 The inner and outer diameters are spot on, and they seat perfectly with standard 3/8" bolts. Everything is machined clean with no rough edges or warping, and the uniform thickness gives me great peace of mind when tightening things down. 🧰⚙️ I’ve used a handful already on my deck railing and car parts, and every one has done its job with no bending or slipping. It’s a great value for 50 pieces, and the quality easily beats out some washers I’ve paid more for in-store. Definitely keeping these stocked in my shop! 🔩📦👏
Review: Quality item - Just as advertised. Fast shipping, great value.

## Features

- Flat washer inside diameter: 0.4 Inch, Outside Diameter: 0.866 Inch.Thickness: 0.078 Inch
- Material: Made of 304 Stainless Steel for increased corrosion resistance. Perfect for indoor and outdoor use
- These washers fit 3/8 and M10 bolts perfectly
- Flat washer are used to distribute loads of threaded bolts, screws and nuts, provide a smooth-bearing surface
- Package includes 50Pcs Flat Washers. Color: Silver tone.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRQ67YVV |
| Best Sellers Rank | #9,532 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #53 in Flat Washers |
| Brand | KANSPHY |
| Compatible Groove Diameter | 0.4 Inches |
| Customer Reviews | 4.7 out of 5 stars 261 Reviews |
| Exterior Finish | Stainless Steel |
| Fastener Size | 3/8 |
| Fastener Type | Flat Washer |
| Finish Types | Stainless Steel |
| Grade Rating | Grade 8 |
| Item Diameter | 0.88 Inches |
| Item Dimensions | 0.87 x 0.87 x 0.08 inches |
| Item Thickness | 0.08 Inches |
| Item Weight | 195 Grams |
| Manufacturer | KANSPHY |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Model | FTWAM10-22 |
| Number Of Items | 1 |
| Number of Pieces | 50 |
| Outside Diameter | 0.875 inches Inches |
| Part Number | FTWAM10-22 |
| Screw Head Style | Flat |
| Size Name | 0.875 inches |
| UPC | 747165215787 |
| Unit Count | 1.0 Count |
| Washer Type | Flat |

## Product Details

- **Material:** Stainless Steel
- **Outside Diameter:** 0.88 Inches
- **Washer Type:** Flat
- **Exterior Finish:** Stainless Steel
- **Fastener Size:** 3/8

## Images

![3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs) - Image 1](https://m.media-amazon.com/images/I/61X9tIcUthL.jpg)
![3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs) - Image 2](https://m.media-amazon.com/images/I/61mcsTG14oL.jpg)
![3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs) - Image 3](https://m.media-amazon.com/images/I/81DfBkXnkBL.jpg)
![3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs) - Image 4](https://m.media-amazon.com/images/I/71Ny+m+V24L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly What I Needed – Tough, Reliable, and Rust-Free! 🛠️🔩💧
*by D***K on July 8, 2025*

These 3/8" x 7/8" stainless flat washers have been a fantastic addition to my hardware stash. I’ve used them on a few outdoor and garage projects already, and I couldn’t be more pleased. The 18-8 stainless steel feels super solid and has held up beautifully, even in damp or weather-exposed areas—no signs of rust at all! 🌧️💪 The inner and outer diameters are spot on, and they seat perfectly with standard 3/8" bolts. Everything is machined clean with no rough edges or warping, and the uniform thickness gives me great peace of mind when tightening things down. 🧰⚙️ I’ve used a handful already on my deck railing and car parts, and every one has done its job with no bending or slipping. It’s a great value for 50 pieces, and the quality easily beats out some washers I’ve paid more for in-store. Definitely keeping these stocked in my shop! 🔩📦👏

### ⭐⭐⭐⭐⭐ Quality item
*by A***R on April 10, 2026*

Just as advertised. Fast shipping, great value.

### ⭐⭐⭐⭐⭐ High quality!
*by J***T on April 14, 2026*

High quality! Thanks!

## Frequently Bought Together

- 3/8" x 7/8" Stainless Flat Washer,18-8 (304) Stainless Steel Washers,0.4" ID x 0.866" OD x 0.078" Thick(50Pcs)
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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-06-02*