---
product_id: 694972649
title: "120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner"
brand: "bnuok"
price: "£7.54"
currency: GBP
in_stock: true
reviews_count: 8
category: "Bnuok"
url: https://www.desertcart.co.uk/products/694972649-120pcs-m3-x-6mm-hex-socket-head-cap-screws-bolts
store_origin: GB
region: United Kingdom
---

# 120pcs premium screws Grade 12.9 alloy steel strength Allen hex socket drive 120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner

**Brand:** bnuok
**Price:** £7.54
**Availability:** ✅ In Stock

## Summary

> 🔧 Screw it right, screw it tight — the pro’s choice for precision and power!

## Quick Answers

- **What is this?** 120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner by bnuok
- **How much does it cost?** £7.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/694972649-120pcs-m3-x-6mm-hex-socket-head-cap-screws-bolts)

## Best For

- bnuok enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** 12.9 Grade alloy steel ensures unmatched hardness and corrosion resistance for heavy-duty reliability.
- • **Organized & Ready:** Neatly packaged for quick access and backed by a 24-month warranty—never run out or worry about quality.
- • **Precision Perfect:** Fully threaded M3 x 6mm screws with burr-free, uniform pitch for flawless assembly every time.
- • **Torque-Ready Design:** Hex socket drive delivers superior torque without stripping—engineered for professional-grade projects.
- • **Versatile Power Pack:** 120-piece set plus hex spanner covers all your 3D printing, robotics, and DIY repair needs.

## Overview

The BNUOK 120pcs M3 x 6mm Hex Socket Head Cap Screws are crafted from high-strength 12.9 grade alloy steel with a sleek black oxide finish for rust resistance. Featuring fully threaded shafts and a torque-optimized Allen hex socket drive, this set delivers precision and durability for demanding industrial, DIY, and tech projects. With 120 screws plus a hex spanner included, it’s the ultimate all-in-one fastener kit designed for professionals and makers who refuse to compromise on quality or performance.

## Description

Product description M3&M4 &M5 Hex Socket Head Cap Screws Bolts Stainless Steel M4 Screws Stainless Steel M3 Screws Alloy Steel M4 Screws Alloy Steel M3 Screws Stainless Steel M5 Screws Alloy Steel M5 Screws

Review: Great price for large package - These screws are milled well and do what is expected. there were perfect for my 3D print projects. Getting 120 for a small price is a benefit. No issues purchasing these, I would do it again.
Review: High-Quality Screws and Great to Keep as Workshop Spares - I purchased these screws primarily for my marble clock project, but they have also become a very useful addition to my workshop inventory. The dimensions were accurate, the black finish looks great, and the screws feel strong and well made. The 12.9 grade alloy steel provides excellent strength and gives confidence that they will hold up well in demanding applications. Having a large quantity on hand is extremely convenient. Fasteners are one of those items that always seem to be needed unexpectedly, and keeping a supply in stock saves both time and frustration. If you need high-quality M4 socket head cap screws, these are an excellent choice and offer outstanding value for the quantity provided.

## Features

- Sturdy & Durable: BNUOK M3 socket head cap screws are made of high-quality 12.9 Grade alloy steel, which has high hardness, good rust resistance, strong and durable. It has good corrosion resistance and can be used for a long time
- M3-0.5 Bolt Specification : Thread Diameter, 3mm; Thread Pitch, 0.5mm; Thread Length, 6mm; Head Diameter, 5.5mm; Head Height, 3mm; Drive Type, Allen Hex Socket; Allen Hex Drive Size, 2.58mm
- Wide Applications:The m3 screw is widely used for 3D printers, RC car, machinery repair, instruments, electronic products, DIY Project, household appliances, lamps, cabinets and bicycle repair
- Well-made M3 Screws: M3 x 6mm screws is features a design with a hex socket drive that provides more torque and more stable performance.These m3 bolts with clean threads, uniform pitch, no residual burrs, true to size
- Package Included: You will get 120pcs M3 bolts and 1pcs hex spanner.We promise a 24-month warranty, if you have any problems, please feel free to contact us, we will solve your problem within 24 Hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DJQH3WSX |
| Best Sellers Rank | #1,246 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Socket Head Screws |
| Brand | BNUOK |
| Color | Black |
| Compatible Groove Diameter | 3 Millimeters |
| Customer Reviews | 4.7 out of 5 stars 620 Reviews |
| Drive System | Internal Hex |
| Exterior Finish | Black Oxide |
| Fastener Size | M3 x 6mm |
| Fastener Type | Hex Socket Bolt |
| Finish Types | Matte |
| Head Style | Hex |
| Head Type | Socket |
| Item Diameter | 3 Millimeters |
| Item Dimensions | 0.24 x 0.12 x 0.24 inches |
| Item Hardness | Grade 12.9 |
| Manufacturer | BNUOK |
| Manufacturer Grade | heavy-duty |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Model | BNH02010 |
| Number Of Items | 120 |
| Number of Pieces | 120 |
| Part Number | BNH02010 |
| Screw Head Style | Hex |
| Set Screw Thread Type | Metric Coarse |
| Size Name | M3 x 6mm |
| Thread Class | 3A |
| Thread Coverage | Fully Threaded |
| Thread Size | m3-0.5 |
| Thread Style | Right Hand |
| Thread Type | Unc |
| Unit Count | 120.0 Count |

## Product Details

- **Exterior Finish:** Black Oxide
- **Head Style:** Hex
- **Manufacturer Grade:** heavy-duty
- **Material:** Alloy Steel
- **Thread Size:** m3-0.5

## Images

![120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner - Image 1](https://m.media-amazon.com/images/I/61EL-BhFdCL.jpg)
![120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner - Image 2](https://m.media-amazon.com/images/I/71r3AZBoG1L.jpg)
![120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner - Image 3](https://m.media-amazon.com/images/I/71TpMfL7ajL.jpg)
![120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner - Image 4](https://m.media-amazon.com/images/I/61cLKkBTTFL.jpg)
![120pcs M3 x 6mm Hex Socket Head Cap Screws Bolts, 12.9 Grade Alloy Steel, Black Oxide Finish, Allen Socket Drive, Full Threads,with Hex Spanner - Image 5](https://m.media-amazon.com/images/I/51iw6wS3vQL.jpg)

## Available Options

This product comes in different **Color, Size, Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great price for large package
*by W***H on May 16, 2026*

These screws are milled well and do what is expected. there were perfect for my 3D print projects. Getting 120 for a small price is a benefit. No issues purchasing these, I would do it again.

### ⭐⭐⭐⭐⭐ High-Quality Screws and Great to Keep as Workshop Spares
*by G***D on May 12, 2026*

I purchased these screws primarily for my marble clock project, but they have also become a very useful addition to my workshop inventory. The dimensions were accurate, the black finish looks great, and the screws feel strong and well made. The 12.9 grade alloy steel provides excellent strength and gives confidence that they will hold up well in demanding applications. Having a large quantity on hand is extremely convenient. Fasteners are one of those items that always seem to be needed unexpectedly, and keeping a supply in stock saves both time and frustration. If you need high-quality M4 socket head cap screws, these are an excellent choice and offer outstanding value for the quantity provided.

### ⭐⭐⭐⭐⭐ Strong, Precise, and Great Value
*by C***N on September 30, 2025*

This screw set is excellent quality. The 12.9 grade alloy steel makes them very strong and reliable for heavy-duty applications, and the black oxide finish gives them a clean, professional look while helping to resist rust. The machining is precise—the threads are smooth, consistent, and seat firmly without stripping. I like that they come fully threaded, making them versatile for different projects, from 3D printer assemblies to furniture, robotics, and DIY builds. The Allen socket drive fits snugly with the included hex spanner and standard tools, which prevents rounding out. The 180-piece set is a great value, giving me plenty of screws for current and future projects without having to worry about running out. Everything comes neatly packaged, which keeps the hardware organized and easy to grab. Overall, these are durable, accurate, and dependable screws. Highly recommended for makers, builders, and anyone needing high-strength fasteners

## Frequently Bought Together

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-31*