---
product_id: 614051938
title: "420pcs M3 Screw Kit, Premium M3 Bolts for 3D Printing, Hex Socket Head Cap Screw Assortment with Nuts and Washers, M3 x 6mm /8mm /10mm /12mm /16mm /20mm /25mm (Black)"
brand: "carlwin"
price: "€ 36.34"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/614051938-420pcs-m3-screw-kit-premium-m3-bolts-for-3d-printing
store_origin: HR
region: Croatia
---

# Convenient storage box 12.9 grade alloy steel 7 screw sizes included 420pcs M3 Screw Kit, Premium M3 Bolts for 3D Printing, Hex Socket Head Cap Screw Assortment with Nuts and Washers, M3 x 6mm /8mm /10mm /12mm /16mm /20mm /25mm (Black)

**Brand:** carlwin
**Price:** € 36.34
**Availability:** ✅ In Stock

## Summary

> 🔧 Screw it, get organized!

## Quick Answers

- **What is this?** 420pcs M3 Screw Kit, Premium M3 Bolts for 3D Printing, Hex Socket Head Cap Screw Assortment with Nuts and Washers, M3 x 6mm /8mm /10mm /12mm /16mm /20mm /25mm (Black) by carlwin
- **How much does it cost?** € 36.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/614051938-420pcs-m3-screw-kit-premium-m3-bolts-for-3d-printing)

## Best For

- carlwin enthusiasts

## Why This Product

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

## Key Features

- • **Complete Assortment:** Includes 420 pieces with 7 popular sizes, ensuring you have the right screw for every job.
- • **Unmatched Durability:** Crafted from premium 12.9 grade alloy steel for superior strength and longevity.
- • **User-Friendly Design:** Hex socket head allows for effortless tightening with a hex wrench.
- • **Organized & Accessible:** Comes in a sleek plastic storage box, making organization a breeze.
- • **Versatile Applications:** Perfect for 3D printing, woodworking, machinery repair, and all your DIY projects.

## Overview

The 420pcs M3 Screw Kit is a premium assortment of M3 bolts made from high-strength 12.9 grade alloy steel, featuring a black oxide finish for enhanced corrosion and wear resistance. This kit includes 420 pieces across 7 popular sizes, perfect for a variety of applications including 3D printing and DIY projects, all conveniently stored in a plastic box for easy access.

## Description

420pcs M3 Screw Kit, Premium M3 Bolts for 3D Printing, Hex Socket Head Cap Screw Assortment with Nuts and Washers, M3 x 6mm /8mm /10mm /12mm /16mm /20mm /25mm (Black)

## Features

- Premium Quality: Made of 12.9 grade alloy steel, black oxide finish for high strength, corrosion resistance, and wear resistance.
- Complete Specifications: Includes 7 popular screw sizes (M3x6mm, M3x8mm, M3x10mm, M3x12mm, M3x16mm, M3x20mm, M3x25mm), 20pcs each size, 140pcs screws in total.
- Easy to Use: Hex socket head design for easy tightening with a hex wrench.
- Versatile: Suitable for various applications, including 3D printing, woodworking, machinery repair, DIY projects, etc.
- Convenient Storage: Comes with a plastic storage box for easy storage and organization.

## Product Details

- **Size:** M3
- **Color:** black
- **Material:** Alloy Steel
- **Brand:** CARLWIN
- **Item dimensions L x W x H:** 5 x 3.5 x 0.7 inches

## Images

![420pcs M3 Screw Kit, Premium M3 Bolts for 3D Printing, Hex Socket Head Cap Screw Assortment with Nuts and Washers, M3 x 6mm /8mm /10mm /12mm /16mm /20mm /25mm (Black) - Image 1](https://m.media-amazon.com/images/I/716CXcFsAEL.jpg)

## Available Options

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

## Frequently Bought Together

- 420pcs M3 Screw Kit, Premium M3 Bolts for 3D Printing, Hex Socket Head Cap Screw Assortment with Nuts and Washers, M3 x 6mm /8mm /10mm /12mm /16mm /20mm /25mm (Black)
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**Shop now:** [https://www.desertcart.hr/products/614051938-420pcs-m3-screw-kit-premium-m3-bolts-for-3d-printing](https://www.desertcart.hr/products/614051938-420pcs-m3-screw-kit-premium-m3-bolts-for-3d-printing)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-10*