---
product_id: 327668678
title: "300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic"
brand: "haochen"
price: "$170079"
currency: COP
in_stock: true
reviews_count: 13
category: "Haochen"
url: https://www.desertcart.co/products/327668678-300-pcs-m3-hex-socket-head-cap-screws-bolts-nuts
store_origin: CO
region: Colombia
---

# Organized storage box 300 pcs M3 bolts & nuts Alloy steel, corrosion-resistant 300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic

**Brand:** haochen
**Price:** $170079
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your toolkit with the ultimate M3 fastening power!

## Quick Answers

- **What is this?** 300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic by haochen
- **How much does it cost?** $170079 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/327668678-300-pcs-m3-hex-socket-head-cap-screws-bolts-nuts)

## Best For

- haochen enthusiasts

## Why This Product

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

## Key Features

- • **Premium Alloy Steel:** Rustproof, corrosion-resistant strength built to last
- • **Smooth Thread Design:** Sharp, accurate threading for easy, slip-free fastening
- • **Versatile Application:** Perfect for home, office, electronics, automotive & DIY repairs
- • **Complete M3 Assortment:** 300 precision-sized bolts, nuts & washers for every project
- • **Compact Storage Solution:** Sturdy, compartmentalized box keeps your kit ready & organized

## Overview

This 300-piece M3 hex socket head cap screw kit features premium alloy steel bolts, nuts, and washers with corrosion-resistant black finish. Designed for durability and precision, the smooth threads ensure easy installation without slipping. Packaged in a sturdy, compartmentalized storage box, this versatile set is ideal for professional and DIY use across electronics, automotive, furniture, and machinery projects.

## Description

Product Information - Product Name: Hex Socket Head Cap Bolts and Nuts and Washers Set - Material: Alloy Steel - Color: Black - Size: M3 - Quantity: 300 Pcs Package Includes: 25 x M3*4 mm 25 x M3*5 mm 25 x M3*6 mm 25 x M3*8 mm 25 x M3*10 mm 25 x M3*12 mm Features: - All hex head nuts and bolts are made of high-quality alloy steel material, which is sturdy, and durable for long time use. - Designed with enough stressed-bearing surface that can be screwed tighter. Easy for your daily use. - All bolts and nuts and washers set is packed in a storage box, which is easy to use, find, and carry. - Hex head bolt set is ideal for metal plates, plastics, wood and other brittle materials. - Suitable for furniture and ship repair, machine made, vehicle, construction site and building, ect. - You will receive a total of 300 pcs M3 hex head bolts and nuts and washers, enough for your daily use. Warm Tips - If you have any questions about using the nut and bolt sets, please feel free to contact us. We will solve your doubts as soon as possible. Note: Manual measurement of metric dimensions has a tolerance of approximately ±0.2 millimetres.

Review: Handy assortment of bolts - The 440 Pcs M3 Bolts and Nuts Set is a comprehensive assortment kit designed for a wide range of DIY, mechanical, and repair projects. Made from 304 stainless steel, these hex socket screws and nuts are durable, corrosion-resistant, and versatile, making this kit a great addition to any toolbox. Positives: 1. High-Quality Stainless Steel: The 304 stainless steel construction ensures these bolts and nuts are resistant to rust and corrosion, making them ideal for use in both indoor and outdoor environments. The material quality ensures long-lasting durability, even in harsh conditions. 2. Comprehensive Assortment: With 440 pieces in total, the kit includes a wide variety of bolt lengths and matching nuts, providing the flexibility to handle various projects. The assortment of sizes makes it easy to find the right bolt for different applications, from electronics to mechanical repairs. 3. Hex Socket Design: The hex socket button head design provides a clean, low-profile finish and helps distribute pressure evenly. This design also makes the screws easier to install and remove without stripping, especially when using the included hex wrenches. 4. Convenient Storage Case: The set comes in a well-organized, compartmentalized storage box, which makes it easy to find the right size quickly. The clear labeling and compact design ensure that everything stays in place, even when carried around, making it a great portable solution. 5. Includes Hex Wrenches: The inclusion of two hex wrenches is a nice touch, especially for those who might not already have the proper tools. These wrenches fit perfectly with the screws, ensuring you can get started right out of the box without needing additional tools. Negatives: 1. Limited Larger Sizes: While the kit is comprehensive, it focuses exclusively on M3 bolts and nuts. For those needing larger screws, this kit won’t be sufficient. If you’re working on heavy-duty projects, you may need to purchase additional sizes separately. 2. Hex Wrenches Could Be Higher Quality: While the included hex wrenches are functional, they are somewhat basic in quality. For heavy use or frequent projects, you may prefer to use more robust, ergonomic wrenches for better comfort and grip. 3. Not Labeled by Size: While the screws are organized in compartments, the individual sizes are not labeled. This can lead to confusion when trying to quickly pick out the correct size, requiring some sorting or measurement before use. Conclusion: The 440 Pcs M3 Bolts and Nuts Set is an excellent kit for anyone looking for a versatile and durable assortment of screws and nuts. The high-quality 304 stainless steel construction ensures long-term use in various environments, and the hex socket design makes installation and removal straightforward. While it is limited to M3 sizes and the hex wrenches could be of better quality, this kit provides great value for most small to medium DIY, repair, or hobby projects. A well-organized case and the inclusion of hex wrenches make it a convenient and ready-to-use addition to any toolkit.
Review: Good quality - Good selection

## Features

- Premium Material: All hex head bolts and nuts are made of outstanding alloy steel material with high strength, which are corrosion resistance and rust resistance, sturdy, can also be used for a long time in harsh environments.
- Easy to Use: Black bolts threads are very smooth, sharp and accurate. It is not easy to deform and slide in the working process. Nuts can increase the surface contact area, reduce wear, and protect screws bolts and other fasteners.
- Easy to Store: All hex head screws and nuts are packaged in a sturdy plastic storage box, sorted by size/type for quick access and protection from confusion and loss.
- Wide Applications: Hex head bolts and nuts are ideal tools for home and workplace. Mainly used for home and office equipment, communication equipment, ship assembly, machinery industry, furniture, automobile and motorcycle maintenance, DIY, etc.
- Package Includes: You will receive a total of 300 pcs hex bolts and nuts and washers, in the size of m3*4 mm, m3*5 mm, m3*6 mm, m3*8 mm, m3*10 mm, m3*12 mm, 25 pcs for each size, enough for your daily use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08YXL3P7D |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 12,733 in DIY & Tools ( See Top 100 in DIY & Tools ) 62 in Nut & Bolt Sets |
| Compatible groove diameter | 3 Millimeters |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,306) |
| Cutting Diameter | 3 Millimetres |
| Date First Available | 4 May 2021 |
| Fastener type | Bolts |
| Finish | Oxidised surface |
| Finish type | Oxidised surface |
| Head Style | Hex |
| Head style | Hex |
| Item Package Quantity | 1 |
| Item Weight | 160 g |
| Item diameter | 3 Millimetres |
| Item model number | Acier allié |
| Manufacturer | JUNSHEN |
| Measurement System | Metric |
| Number of items | 1 |
| Number of pieces | 300 |
| Shape | Cylindrical or Hexagonal |
| Thread size | M3 |
| UPC | 692041720889 |

## Product Details

- **Brand:** HAOCHEN
- **Colour:** M3 black 300
- **Item dimensions L x W x H:** 18 x 10 x 2.3 centimetres
- **Material:** PE (Polyethylene)
- **Size:** M3

## Images

![300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic - Image 1](https://m.media-amazon.com/images/I/4124NpQtU-L.jpg)
![300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic - Image 2](https://m.media-amazon.com/images/I/416HVzNVAtL.jpg)
![300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic - Image 3](https://m.media-amazon.com/images/I/41WCMxI29KL.jpg)
![300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic - Image 4](https://m.media-amazon.com/images/I/41zhdS48RfL.jpg)
![300 Pcs M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, Black Mechanical Hexagon Socket Head Screws Nuts and Bolts with Washers for Home Office Electronic - Image 5](https://m.media-amazon.com/images/I/511XsOmKaJL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Handy assortment of bolts
*by K***N on 15 September 2024*

The 440 Pcs M3 Bolts and Nuts Set is a comprehensive assortment kit designed for a wide range of DIY, mechanical, and repair projects. Made from 304 stainless steel, these hex socket screws and nuts are durable, corrosion-resistant, and versatile, making this kit a great addition to any toolbox. Positives: 1. High-Quality Stainless Steel: The 304 stainless steel construction ensures these bolts and nuts are resistant to rust and corrosion, making them ideal for use in both indoor and outdoor environments. The material quality ensures long-lasting durability, even in harsh conditions. 2. Comprehensive Assortment: With 440 pieces in total, the kit includes a wide variety of bolt lengths and matching nuts, providing the flexibility to handle various projects. The assortment of sizes makes it easy to find the right bolt for different applications, from electronics to mechanical repairs. 3. Hex Socket Design: The hex socket button head design provides a clean, low-profile finish and helps distribute pressure evenly. This design also makes the screws easier to install and remove without stripping, especially when using the included hex wrenches. 4. Convenient Storage Case: The set comes in a well-organized, compartmentalized storage box, which makes it easy to find the right size quickly. The clear labeling and compact design ensure that everything stays in place, even when carried around, making it a great portable solution. 5. Includes Hex Wrenches: The inclusion of two hex wrenches is a nice touch, especially for those who might not already have the proper tools. These wrenches fit perfectly with the screws, ensuring you can get started right out of the box without needing additional tools. Negatives: 1. Limited Larger Sizes: While the kit is comprehensive, it focuses exclusively on M3 bolts and nuts. For those needing larger screws, this kit won’t be sufficient. If you’re working on heavy-duty projects, you may need to purchase additional sizes separately. 2. Hex Wrenches Could Be Higher Quality: While the included hex wrenches are functional, they are somewhat basic in quality. For heavy use or frequent projects, you may prefer to use more robust, ergonomic wrenches for better comfort and grip. 3. Not Labeled by Size: While the screws are organized in compartments, the individual sizes are not labeled. This can lead to confusion when trying to quickly pick out the correct size, requiring some sorting or measurement before use. Conclusion: The 440 Pcs M3 Bolts and Nuts Set is an excellent kit for anyone looking for a versatile and durable assortment of screws and nuts. The high-quality 304 stainless steel construction ensures long-term use in various environments, and the hex socket design makes installation and removal straightforward. While it is limited to M3 sizes and the hex wrenches could be of better quality, this kit provides great value for most small to medium DIY, repair, or hobby projects. A well-organized case and the inclusion of hex wrenches make it a convenient and ready-to-use addition to any toolkit.

### ⭐⭐⭐⭐⭐ Good quality
*by P***E on 29 October 2025*

Good selection

### ⭐⭐⭐⭐⭐ fantastic product, quick delivery of just what I needed
*by D***E on 18 July 2025*

excellent item

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-05*