---
product_id: 50661109
title: "3/8\" Stainless Steel Internal Tooth Star Lock Washers (Pack of 50) Marine Bolt Supply"
brand: "marine bolt supply"
price: "A$26"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/50661109-3-8-stainless-steel-internal-tooth-star-lock-washers-pack
store_origin: AU
region: Australia
---

# 0.68" OD, precision fit 3/8" fastener size, perfect match 0.04" thickness, durable grip 3/8" Stainless Steel Internal Tooth Star Lock Washers (Pack of 50) Marine Bolt Supply

**Brand:** marine bolt supply
**Price:** A$26
**Availability:** ✅ In Stock

## Summary

> ⚡ Lock in strength, lock out failure!

## Quick Answers

- **What is this?** 3/8" Stainless Steel Internal Tooth Star Lock Washers (Pack of 50) Marine Bolt Supply by marine bolt supply
- **How much does it cost?** A$26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/50661109-3-8-stainless-steel-internal-tooth-star-lock-washers-pack)

## Best For

- marine bolt supply enthusiasts

## Why This Product

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

## Key Features

- • **Ready-to-Use Packs:** Heat-sealed, labeled packs for professional convenience
- • **Unmatched Grip Power:** Internal teeth lock screws tight for zero slip
- • **Marine-Grade Strength:** Premium 400 series stainless steel outperforms 300 series
- • **Versatile Compatibility:** Ideal for pan or button head screws in demanding environments
- • **Corrosion-Resistant Finish:** Glossy stainless steel finish resists rust and wear

## Overview

These 3/8" internal tooth star lock washers from Marine Bolt Supply feature precision 0.68" OD and 0.04" thickness, crafted from robust 400 series stainless steel for superior strength and corrosion resistance. Designed to bite into pan or button head screws, they ensure a secure, slip-free fastening solution, all delivered in professionally sealed packs of 50 for easy inventory management.

## Description

These standard type 410 stainless steel internal tooth lock washers are commonly used with pan or button style head screws. The internal teeth bite into the screw providing a tight grip. 400 series stainless steel is the industry standard for these type of locking washers. 400 series provides more strength than 300 series. These are stainless steel but are also mildly magnetic.

## Features

- Dimensions: OD = .68", ID = .38" Thickness = .04"
- Quality and strong standard type 400 series stainless steel
- Each pack is professionally heat sealed and labeled by Marine Bolt Supply
- Offered in convenient small or large quantity packs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Stainless Steel |
| Outside Diameter | 0.68 Inches |
| Washer Type | Internal Tooth Lock |
| Exterior Finish | Stainless Steel |
| Fastener Size | 3/8" |
| Item Thickness | 0.04 Inches |
| Size | 3/8 (Pack of 50) |
| Metal Type | Stainless Steel |
| Brand | Marine Bolt Supply |
| Color | Silver |
| Number of Pieces | 50 |
| Item Diameter | 0.68 Inches |
| Manufacturer | CMC Industrial Supply |
| Part Number | 4-FLWI-037 |
| Is Discontinued By Manufacturer | No |
| Finish | Glossy |
| Shape | Star |
| Head Style | Flat |
| Cutting Diameter | 0.68 Inches |
| Measurement System | Inch |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Stainless Steel
- **Outside Diameter:** 0.68 Inches
- **Washer Type:** Internal Tooth Lock
- **Exterior Finish:** Stainless Steel
- **Fastener Size:** 3/8"

## Images

![3/8" Stainless Steel Internal Tooth Star Lock Washers (Pack of 50) Marine Bolt Supply - Image 1](https://m.media-amazon.com/images/I/414cvrosOQL.jpg)
![3/8" Stainless Steel Internal Tooth Star Lock Washers (Pack of 50) Marine Bolt Supply - Image 2](https://m.media-amazon.com/images/I/41flEEO63eL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.com.au/products/50661109-3-8-stainless-steel-internal-tooth-star-lock-washers-pack](https://www.desertcart.com.au/products/50661109-3-8-stainless-steel-internal-tooth-star-lock-washers-pack)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-17*