---
product_id: 600782778
title: "420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts"
brand: "kadrick"
price: "€ 35.47"
currency: EUR
in_stock: true
reviews_count: 8
category: "Kadrick"
url: https://www.desertcart.it/products/600782778-420pcs-m3-m4-m5-threaded-inserts-assortment-kit-for-3d
store_origin: IT
region: Italy
---

# M3, M4, M5 sizes heat-set installation 420 precision brass inserts 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts

**Brand:** kadrick
**Price:** € 35.47
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your 3D prints with brass precision – don’t settle for less!

## Quick Answers

- **What is this?** 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts by kadrick
- **How much does it cost?** € 35.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/600782778-420pcs-m3-m4-m5-threaded-inserts-assortment-kit-for-3d)

## Best For

- kadrick enthusiasts

## Why This Product

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

## Key Features

- • **Comprehensive Size Range:** 420-piece assortment covers M3, M4, and M5 inserts, tailored for prototyping and production needs.
- • **Knurled for Maximum Grip:** Precision knurled design ensures superior holding strength and resistance to pull-out under stress.
- • **Organized & Ready to Use:** Clearly labeled compartments in a compact case keep your workflow smooth and efficient.
- • **Trusted Quality & Warranty:** Crafted by Kadrick with corrosion-resistant brass and backed by a 24-month warranty for peace of mind.
- • **Ultimate 3D Printing Upgrade:** Seamlessly embed durable brass threads into your plastic parts with heat-set technology for professional-grade assemblies.

## Overview

The Kadrick 420Pcs Threaded Inserts Kit offers a versatile, high-quality solution for adding durable M3, M4, and M5 brass threads to 3D printed plastic parts. Featuring knurled inserts for enhanced grip and heat-set installation compatibility, this assortment is organized in a labeled case and backed by a 24-month warranty, making it ideal for both prototyping and production.

## Description

Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts: desertcart.com: Industrial & Scientific

Review: Good qaulity, nice selection, fair price. - I appreciate the nice selection of sizes and overall quality of these inserts. They work fine for my applications. Install easily using the Kadrick soldering iron tips. Since my application tends to be "one and done" use where the screw is seldom, if ever, removed, I can't comment on durability. I don't see any red flags that make me think these are less durable than any others that I have used. If I have one negative comment, it is that I would like the assortment to include more sizes of M4 and perhaps fewer M3. That said, this provides plenty of selection for prototyping parts and validating design and functionality. If I find that a different length insert in the prototyping stage, that is easy to resolve when I purchase larger quantities for production runs.
Review: Very good collection - well made. - Great for my hobby level 3D printed parts. Excellent assortment, all seem very well made and are highly functional. They fit my heat set kit well and I have found none that seem mal formed so far. Will buy again.

## Features

- Suitable for 3D printing: Brass threaded inserts, which can be embedded into plastic materials using the heat from a soldering iron or ultrasound, are the optimal solution for adding threads in 3D printing.
- Common specifications: We have created this set of inserts using a large quantity of M3 inserts combined with M4 and M5 inserts, based on the most commonly used specifications by 3D printing enthusiasts. The heights range from 3mm to 12mm. We hope you will like it.
- Secure fixation: Our brass threaded inserts are made of high-quality brass and undergo precision processing, ensuring excellent heat conduction and corrosion resistance. Through testing, we have found that compared to straight-threaded inserts, the knurled threaded inserts provide stronger gripping strength and can withstand high levels of tensile force.
- Clear labeling: Each specification has its own independent compartment in the plastic box, and we have attached labels with detailed annotations for key data, making it convenient to use.
- Brand guarantee: Kadrick specializes in the production and development of fasteners. Our products have undergone rigorous testing, so you can use them with confidence. Additionally, we provide a 24-month after-sales warranty service. If you have any questions, please feel free to contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CPVCTXJ7 |
| Best Sellers Rank | #1,334 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Nut Inserts |
| Brand | Kadrick |
| Color | yellow |
| Date First Available | December 9, 2023 |
| Exterior Finish | Brass |
| Fastener Type | Insert |
| Finish Type | Polished |
| Inside Thread Size | M3, M4, M5 |
| Item Weight | 8.1 ounces |
| Item dimensions L x W x H | 2.7 x 5 x 0.9 inches |
| Manufacturer | Kadrick |
| Material | Brass |
| Metal Type | Brass |
| Number of Pieces | 420 |
| Product Dimensions | 2.7 x 5 x 0.9 inches |
| Size | Kit M3-M5 420Pcs |
| Thread Class | Class 2B |
| Thread Coverage | Fully Threaded |
| Thread Size | M3 M4 M5 |
| Thread Style | Right Hand |
| Thread Type | Straight |

## Product Details

- **Color:** yellow
- **Exterior Finish:** Brass
- **Fastener Type:** Insert
- **Material:** Brass
- **Thread Size:** M3 M4 M5

## Images

![420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts - Image 1](https://m.media-amazon.com/images/I/81U+UVv0VmL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good qaulity, nice selection, fair price.
*by E***N on January 26, 2026*

I appreciate the nice selection of sizes and overall quality of these inserts. They work fine for my applications. Install easily using the Kadrick soldering iron tips. Since my application tends to be "one and done" use where the screw is seldom, if ever, removed, I can't comment on durability. I don't see any red flags that make me think these are less durable than any others that I have used. If I have one negative comment, it is that I would like the assortment to include more sizes of M4 and perhaps fewer M3. That said, this provides plenty of selection for prototyping parts and validating design and functionality. If I find that a different length insert in the prototyping stage, that is easy to resolve when I purchase larger quantities for production runs.

### ⭐⭐⭐⭐⭐ Very good collection - well made.
*by G***E on December 21, 2025*

Great for my hobby level 3D printed parts. Excellent assortment, all seem very well made and are highly functional. They fit my heat set kit well and I have found none that seem mal formed so far. Will buy again.

### ⭐⭐⭐⭐⭐ Great kit with diversity
*by M***L on January 8, 2026*

Love this Kit, has different size fittings, wish there was a kit that also includede the screws, perfect for our little 3D printing projects

## Frequently Bought Together

- Kadrick 420Pcs M3 M4 M5 Threaded Inserts Assortment Kit for 3D Printing Components, Metric Brass Knurled Nuts, Insert by Heat into Plastic Parts
- Kadrick Metric Screws Assortment - 2240 Pcs M3 Nuts Washers Kit, M3x4MM-35MM, Hex Socket Button & Cap Head Machine Bolts, 12.9 & 10.9 Grade Alloy Steel, Black for 3D Printing
- Heat Set Insert Tool,Tips for Threaded inserts M2 M2.5 M3 M4 M5 M6, Soldering Iron Tips for 3D Printer Users,Compatible with 900M/T18/FX-888D Irons- Press Tool for Plastic 3D Printer Components

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-20*