---
product_id: 251646086
title: "18-8 Stainless Steel 5/16\" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt"
brand: "makers bolt"
price: "10.34 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/251646086-18-8-stainless-steel-5-16-flat-washers-100-pcs
store_origin: OM
region: Oman
---

# Fits 5/16" fasteners Corrosion resistant Made in USA 18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt

**Brand:** makers bolt
**Price:** 10.34 OMR
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Fastening Game!

## Quick Answers

- **What is this?** 18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt by makers bolt
- **How much does it cost?** 10.34 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/251646086-18-8-stainless-steel-5-16-flat-washers-100-pcs)

## Best For

- makers bolt enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Constructed from certified 18-8 stainless steel for long-lasting performance.
- • **Sleek Aesthetic:** Black oxidized finish for a modern, professional look.
- • **Quality Assurance:** Proudly finished and packaged in the USA, ensuring top-notch quality.
- • **Precision Engineering:** Crafted to fit 5/16" fasteners with exacting standards.
- • **Versatile Applications:** Ideal for both household and industrial projects, enhancing bearing capacity.

## Overview

These 18-8 Stainless Steel Flat Washers come in a pack of 100, featuring a black oxidized finish for enhanced corrosion resistance. Designed to fit 5/16" fasteners, they are perfect for various applications, ensuring durability and a sleek appearance. Proudly made in the USA, these washers meet military specifications for quality and performance.

## Description

18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt

## Features

- SIZING: Fits 5/16" fasteners | Inside Diameter: 11/32" | Outside Diameter: 3/4" |Thickness: 0.05" | Quantity: 100 Pieces per package
- CERTIFIED STAINLESS STEEL: Made from 18-8 (304) premium stainless steel, our fasteners are tested and certified to ensure the washers you receive are grade 18-8 stainless and meet size specifications.
- BLACK OXIDE: These stainless washers are proudly black oxidized in the USA to military specifications, giving the washers a sleek look and added corrosion and abrasion resistance.
- PROJECT CENTER: These metal washers are great for exterior household and industrial applications such as washers for screws or washers for bolts outside to increase the bearing capacity and protect the material under the washer.
- SHOP WITH CONFIDENCE: Makers Bolt proudly finishes and packages these fasteners in the USA ensuring quality and conformance to specifications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Stainless Steel |
| Outside Diameter | 0.75 Inches |
| Washer Type | Flat |
| Exterior Finish | Stainless Steel |
| Item Thickness | 0.05 Inches |
| Size | 5/16" (.343ID X .750OD X .050TH) |
| Metal Type | Stainless Steel |
| Brand | MAKERS BOLT |
| Color | Black Oxide |
| Number of Pieces | 100 |
| Head Style | Flat |
| Fastener Type | Flat Washer |
| Compatible groove diameter | 0.34 Inches |
| UPC | 850020465316 |
| Manufacturer | Makers Bolt |
| Part Number | 31225 |
| Item Weight | 7 ounces |
| Package Dimensions | 7.09 x 4.84 x 0.63 inches |
| Item model number | 31225 |
| Style | Flat |
| Finish | Black Oxide |
| Measurement System | Inch |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Stainless Steel
- **Outside Diameter:** 0.75 Inches
- **Washer Type:** Flat
- **Exterior Finish:** Stainless Steel
- **Item Thickness:** 0.05 Inches

## Images

![18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt - Image 1](https://m.media-amazon.com/images/I/51tRS8VsbcL.jpg)
![18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt - Image 2](https://m.media-amazon.com/images/I/81SWPKVwrCL.jpg)
![18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt - Image 3](https://m.media-amazon.com/images/I/71mHuvo9X9L.jpg)
![18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt - Image 4](https://m.media-amazon.com/images/I/719qlLmEQcL.jpg)

## Available Options

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

## Frequently Bought Together

- 18-8 Stainless Steel 5/16" Flat Washers (100 pcs) Black Oxidized in USA by Makers Bolt
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- 5/16-18 x 1" Button Head Socket Cap Bolts Screws, 20Pcs 304 Stainless Steel 18-8, Allen Hex Drive, Black Oxide by SG TZH(with Hex Spanner)

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**Shop now:** [https://www.desertcart.com.om/products/251646086-18-8-stainless-steel-5-16-flat-washers-100-pcs](https://www.desertcart.com.om/products/251646086-18-8-stainless-steel-5-16-flat-washers-100-pcs)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-26*