---
product_id: 602531620
title: "M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A)"
brand: "youyidun"
price: "AED 138"
currency: AED
in_stock: true
reviews_count: 5
category: "Youyidun"
url: https://www.desertcart.ae/products/602531620-m3-hex-socket-head-cap-screws-bolts-and-nuts-washers
store_origin: AE
region: United Arab Emirates
---

# 750 pcs comprehensive kit Black oxide corrosion resistance 12.9 grade alloy steel strength M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A)

**Brand:** youyidun
**Price:** AED 138
**Availability:** ✅ In Stock

## Summary

> 🔧 Gear up like a pro with the ultimate M3 hex socket kit — never compromise on precision or style!

## Quick Answers

- **What is this?** M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A) by youyidun
- **How much does it cost?** AED 138 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/602531620-m3-hex-socket-head-cap-screws-bolts-and-nuts-washers)

## Best For

- youyidun enthusiasts

## Why This Product

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

## Key Features

- • **All-in-One Organized Kit:** 750-piece assortment neatly stored in a transparent compartment box for quick access and portability.
- • **Precision Fit Every Time:** Fully threaded hex socket head screws ensure smooth installation without slipping or warping.
- • **Enhanced Stability & Safety:** Includes washers and nuts to maximize contact area, reduce pressure, and prevent loosening under stress.
- • **Ultimate Strength & Durability:** Crafted from premium 12.9 grade alloy steel for unmatched corrosion and wear resistance.
- • **Versatile Pro-Grade Application:** Perfect for professionals and hobbyists across electronics, automotive, furniture, and mechanical repairs.

## Overview

This M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit features 750 pieces of fully threaded, 12.9 grade alloy steel fasteners finished with black oxide for superior corrosion and wear resistance. Designed for professional and DIY use, the kit includes a wide range of screw lengths, nuts, and washers, all organized in a durable transparent storage box for easy access and transport. Ideal for electronics, automotive, furniture assembly, and mechanical maintenance, it delivers reliable strength and precision fit in every application.

## Description

What are the advantages of our 12.9 grade alloy steel hex socket bolts assortment kit? 🔧 The hex head cap screw bolts and nut set are made of 12.9 grade high-quality alloy steel, which has good corrosion resistance, high temperature resistance and wear resistance, and is durable. 🔧 Black hex drive head nuts and bolts will both be placed in a clear plastic box with matching labels, easy to use and install. 🔧 The hexagonal socket cap design can be easily installed with a hexagonal wrench, and it is not easy to slip out. 🔧 Used in electronic products, electrical products, furniture, household appliances, bicycle, car, and motorcycle maintenance, mechanical equipment, ship accessories and other fields. Featurese: Material: Aloy Steel Color: Black Size: M3 Quantity: 750 Pcs Package Includes: 30 Pcs - M3x6mm 30 Pcs - M3x8mm 30 Pcs - M3x10mm 30 Pcs - M3x12mm 30 Pcs - M3x16mm 20 Pcs - M3x18mm 20 Pcs - M3x20mm 20 Pcs - M3x25mm 20 Pcs - M3x30mm 20 Pcs - M3x35mm 250 Pcs - M3 Nuts 250 Pcs - M3 Washers Warranty after sale: If you have any questions about the hex socket head cap bolts nuts washers assortment sets, please contact us in time, we will solve your questions ASAP. Warm Tips: Color may vary slightly from the online image due to your monitor colour settings, please refer to the actual product, thank you for your understanding.

Review: Good for 3e printed projects - Building my hardware stock for 3d printed projects.. Great value!
Review: MISLABELED BROKE SO MANY THINGS DUE TO THIS - I have commented on this before to no avail, this product is misleading and labeled as m3 when in fact I received m4 this has caused so many issues please fix this

## Features

- Exquisite Material: The hex socket head cap screws bolts and nuts set are made of high-quality 12.9 grade alloy steel, which has good corrosion resistance, high temperature resistance, wear resistance, high hardness, oxidation resistance and durability, not easy to break or deform, and resistant to rust , can maintain good performance in harsh environments.
- Hex Socket Head Cap Design: Tight threads are clean, accurate, and smooth, not prone to warping during rolling. The Socket head cap design can be easily installed with a hexagonal wrench, and it is not easy to slip out. The combination of Washers and hex nuts can increase the contact area, reduce pressure, prevent loosening and protect parts.
- Easy to Store: All socket head screws and nuts and flat washers set are stored in a transparent and sturdy storage box with compartments. Hex socket cap head screws are stored separately, well organized, easy to carry and find. There is no confusion during transportation and it is convenient to use.
- Wide Range of Applications: Ideal for use by professionals, woodworkers, hobbyists, landlords, repairmen, and others. Suitable for electronic products, furniture installation and maintenance, household appliances, bicycles, automobiles, motorcycles and other vehicle maintenance, mechanical equipment, ship accessories and other fields.
- Package Includes: 750 pcs in total, including 30 pcs m3x6mm, 30 pcs m3x8mm, 30 pcs m3x10mm, 30 pcs m3x12mm, 30 pcs m3x16mm, 20 pcs m3x18mm, 20 pcs m3x20mm, 20 pcs m3x25mm, 20 pcs m3x30mm , 20 pcs m3x35mm, 250 pcs m3 nuts, 250 pcs m3 washers, rich in size and quantity, to meet your needs in different occasions and fields.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CMC3RCVX |
| Best Sellers Rank | 1,267,682 in DIY & Tools ( See Top 100 in DIY & Tools ) |
| Brand | YOUYIDUN |
| Brand Name | YOUYIDUN |
| Colour | A |
| Customer Reviews | 4.6 out of 5 stars 194 Reviews |
| Fastener Type | Variety Pack |
| Fastener type | Variety Pack |
| Finish Types | Black Oxide |
| Head style | Flat, Hex, Socket Cap |
| Item Shape | Cylindrical, Hexagonal |
| Manufacturer | CHINA |
| Manufacturer Part Number | 1 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Number Of Items | 801 |
| Number of Pieces | 801 |
| Screw Head Style | Flat, Hex, Socket Cap |
| Size | M3 |
| Unit Count | 429.9999 gram |

## Product Details

- **Brand:** YOUYIDUN
- **Colour:** A
- **Fastener type:** Variety Pack
- **Material:** Alloy Steel
- **Size:** M3

## Images

![M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A) - Image 1](https://m.media-amazon.com/images/I/712Tji4M57L.jpg)
![M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A) - Image 2](https://m.media-amazon.com/images/I/71CnhmeW1VL.jpg)
![M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A) - Image 3](https://m.media-amazon.com/images/I/71MKWky1KrL.jpg)
![M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A) - Image 4](https://m.media-amazon.com/images/I/71VPF+SfYHL.jpg)
![M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 750 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish (A) - Image 5](https://m.media-amazon.com/images/I/61e0BiQ04rL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good for 3e printed projects
*by B***E on 20 May 2026*

Building my hardware stock for 3d printed projects.. Great value!

### ⭐ MISLABELED BROKE SO MANY THINGS DUE TO THIS
*by H***E on 22 January 2025*

I have commented on this before to no avail, this product is misleading and labeled as m3 when in fact I received m4 this has caused so many issues please fix this

### ⭐⭐⭐⭐⭐ Great assortment
*by J***Y on 16 March 2026*

Lots of bolts and nuts

## Frequently Bought Together

- M3 Hex Socket Head Cap Screws Bolts and Nuts and Washers Assortment Kit, 801 Pcs Metric Allen Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Fully Threaded, Black Oxide Finish
- Kadrick Metric Screw Assortment, 660 Pcs M2 Screws, M2*4mm/6mm/8mm/10mm/12mm/16mm,12.9 Grade Alloy Steel, Metric Hex Socket Head Cap Screws Nuts Washers Kit, Black Zinc Plated Anti Rust Upgrade
- VGBUY 500Pcs M4 Screw Kit, Black M4 Screws (7 Sizes 6-30mm), Assorted Metric Nuts and Bolts Assortment Kit, Hex Socket Head Cap M4 x 6/8/12/16/20/25/30mm with Washer Nuts, 12.9 Grade

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*Product available on Desertcart United Arab Emirates*
*Store origin: AE*
*Last updated: 2026-08-02*