---
product_id: 169253885
title: "100pcs M3 x 6mm 12.9 Grade Alloy Steel Hex Socket Head Cap Screws Bolts,Black Oxide Finish"
brand: "zw99 store"
price: "VT2908"
currency: VUV
in_stock: true
reviews_count: 13
category: "Zw99"
url: https://www.desertcart.vu/products/169253885-100pcs-m3-x-6mm-12-9-grade-alloy-steel-hex
store_origin: VU
region: Vanuatu
---

# M3 x 6mm precision sizing Black Oxide Finish - corrosion resistant Grade 12.9 Alloy Steel - ultra durable 100pcs M3 x 6mm 12.9 Grade Alloy Steel Hex Socket Head Cap Screws Bolts,Black Oxide Finish

**Brand:** zw99 store
**Price:** VT2908
**Availability:** ✅ In Stock

## Summary

> 🛠️ Screw it right, screw it tight — the pro’s choice for flawless builds!

## Quick Answers

- **What is this?** 100pcs M3 x 6mm 12.9 Grade Alloy Steel Hex Socket Head Cap Screws Bolts,Black Oxide Finish by zw99 store
- **How much does it cost?** VT2908 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/169253885-100pcs-m3-x-6mm-12-9-grade-alloy-steel-hex)

## Best For

- zw99 store enthusiasts

## Why This Product

- Trusted zw99 store brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Metric Fit:** Exact M3 x 6mm sizing with full thread coverage ensures seamless compatibility with your projects.
- • **Bulk Pack Convenience:** 100-piece set keeps your workspace stocked and ready for any build or repair.
- • **Versatile Application:** Ideal for 3D printing, RC models, electronics, and precision engineering tasks.
- • **Sleek Black Oxide Finish:** Corrosion-resistant coating adds a professional look while extending lifespan.
- • **Industrial-Grade Strength:** Crafted from 12.9 grade alloy steel for maximum durability and shear strength up to 680 MPa.

## Overview

This 100-piece set of M3 x 6mm hex socket head cap screws features premium 12.9 grade alloy steel construction with a corrosion-resistant black oxide finish. Designed for precision and durability, these fully threaded screws deliver industrial-grade strength and reliability, perfect for professional-grade 3D printing, RC models, and engineering projects.

## Description

Material: 12.9 Alloy Steel

Review: Decent quality and I like that you can buy them in specific sizes as needed. - I use a lot of these length bolts with things from the 3D printer. I like that these are available in bulk in specific sizes so I can stock more of these to match my use. They are decent quality and for the price they are a great choice. I use them to fill a kit and as I am building things. Works well with brass heat set inserts.
Review: Nice quality screws. - Good quality. Replaced a lot of screws on my rc's with these and they held up.

## Features

- Material: 12.9 Alloy Steel
- Metric M3 screws,Thread Length: M3 x 6mm，Thread Diameter: 3mm,
- Thread Pitch: 0.5mm, Total Length: 9mm
- Head Diameter: 5.3mm，Head Height : 3mm
- Thread Coverage: Full Thread

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CMRQ3TB |
| Best Sellers Rank | #5,017 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #28 in Socket Head Screws |
| Brand | zw99 Store |
| Color | Black |
| Date First Available | April 24, 2018 |
| Exterior Finish | Black Oxide Finish,Steel |
| Fastener Type | Hexagon Bolt |
| Head Style | Hex |
| Head Type | Hex |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 3 Millimeters |
| Item Hardness | 12.9 grade |
| Item Weight | 2.39 ounces |
| Item model number | Metric M3 Hex Socket Head Cap Screws |
| Manufacturer | GuanGuangshundagshunda |
| Manufacturer Grade | Grade 12 9 |
| Material | Alloy Steel |
| Maximum Shear Strength | 680 MPa |
| Metal Type | Alloy Steel |
| Number of Pieces | 100 |
| Set Name | 100 pieces |
| Size | M3 x 6mm |
| Thread Class | 3A |
| Thread Size | M3 |
| Thread Style | Right Hand |
| Thread Type | Metric |
| UPC | 647731947626 |

## Product Details

- **Exterior Finish:** Black Oxide Finish,Steel
- **Head Style:** Hex
- **Manufacturer Grade:** Grade 12 9
- **Material:** Alloy Steel
- **Thread Size:** M3

## Images

![100pcs M3 x 6mm 12.9 Grade Alloy Steel Hex Socket Head Cap Screws Bolts,Black Oxide Finish - Image 1](https://m.media-amazon.com/images/I/51nr+xZ7PUL.jpg)

## Available Options

This product comes in different **Size, Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Decent quality and I like that you can buy them in specific sizes as needed.
*by M***N on May 10, 2025*

I use a lot of these length bolts with things from the 3D printer. I like that these are available in bulk in specific sizes so I can stock more of these to match my use. They are decent quality and for the price they are a great choice. I use them to fill a kit and as I am building things. Works well with brass heat set inserts.

### ⭐⭐⭐⭐⭐ Nice quality screws.
*by B***S on January 4, 2026*

Good quality. Replaced a lot of screws on my rc's with these and they held up.

### ⭐⭐⭐⭐⭐ Exactly the ones I needed.
*by R***F on January 14, 2026*

Used these to assemble a 3D printed project. Worked great. Exactly as described.

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**Shop now:** [https://www.desertcart.vu/products/169253885-100pcs-m3-x-6mm-12-9-grade-alloy-steel-hex](https://www.desertcart.vu/products/169253885-100pcs-m3-x-6mm-12-9-grade-alloy-steel-hex)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-17*