---
product_id: 788757832
title: "55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting"
brand: "kadrick"
price: "€ 25.89"
currency: EUR
in_stock: true
reviews_count: 8
category: "Kadrick"
url: https://www.desertcart.nl/products/788757832-55-pcs-1-4-20-threaded-inserts-for-plastic-heat
store_origin: NL
region: Netherlands
---

# Heat-Set Installation Tip Included Premium Lead-Free Brass 1/4''-20 Thread Size 55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting

**Brand:** kadrick
**Price:** € 25.89
**Availability:** ✅ In Stock

## Summary

> 🔩 Upgrade your 3D prints from prototype to polished perfection!

## Quick Answers

- **What is this?** 55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting by kadrick
- **How much does it cost?** € 25.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/788757832-55-pcs-1-4-20-threaded-inserts-for-plastic-heat)

## 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

- • **Superior Grip Design:** Knurled 45° surface maximizes pull-out resistance and torque holding, so your parts stay rock-solid under stress.
- • **Durability That Lasts:** Crafted from corrosion-resistant, lead-free brass that withstands temperatures over 300°C, guaranteeing long-term strength and reliability.
- • **Organized & Ready to Use:** Compact, compartmentalized kit with clear labels keeps your workflow smooth and your workspace clutter-free.
- • **Precision Fit for 3D Prints:** Standard 1/4''-20 threading ensures seamless compatibility with common screws, elevating your prototypes to professional-grade assemblies.
- • **Effortless Heat-Set Installation:** Included soldering iron tip lets you embed inserts cleanly and quickly into PLA, ABS, or PETG plastics—no countersinking needed.

## Overview

This 55-piece kit features 1/4''-20 brass threaded inserts designed specifically for heat-set installation into plastic and 3D printed parts. Made from premium lead-free brass, these inserts offer superior heat conduction and corrosion resistance, ensuring durable, professional-quality screw threads. The included soldering iron tip simplifies installation, while the knurled design provides enhanced grip and torque resistance. Packaged in a labeled organizer, this kit is ideal for engineers and makers seeking reliable, clean, and repeatable fastening solutions.

## Description

Product Specifications: Thread Size: 1/4'' Thread Pitch: 1/4''-20 Height:8MM External diameter:8MM Metal Type:Brass Quantity:55pcs

Review: Perfect for my 3D prints – makes them look way more professional! - The Kadrick 520Pcs M2 M3 M4 M5 Threaded Inserts Assortment Kit is a must-have for anyone doing functional 3D prints. This kit has a huge variety of heat-set threaded inserts (brass, different lengths and sizes: M2, M3, M4, M5) – plenty for all my projects without running out quickly. They install easily with a soldering iron (just heat and press in), seat flush and secure, and create rock-solid threads in PLA, PETG, ABS, etc. No more stripping plastic holes or weak screw connections – bolts thread in smoothly every time. My prints now look and feel way more professional: clean assembly, repeatable strength, and that polished, engineered vibe instead of janky self-tapping screws. Great quality brass, no defects in the batch I got, and the organizer case keeps everything sorted. If you want stronger, cleaner, and more pro-looking 3D printed parts, this assortment is perfect.
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.

## Features

- Standard 1/4'' Size & Included Tip: 1/4''-20 size (8mm OD, 8mm Height) threaded inserts, compatible with 1/4''-20 screws. Includes a matching soldering iron tip for installation.
- Ideal Heat-Set Inserts for 3D Printing: Perfect brass threaded inserts for plastics. Easily embed into 3D printed parts or thermoplastics (PLA, ABS, PETG) using a soldering iron with the included Heat Set Insert Tips.
- Premium Lead-Free Brass & Durability: Made from high-quality, lead-free brass for excellent heat conduction, corrosion resistance, and strength. Withstands over 300°C / 572°F (ideal for heat setting), resisting breakage and deformation.
- Knurled Grip & Easy Installation: Knurled surface (45° design) provides superior pull-out resistance and torque holding vs. smooth inserts. Built-in lead-in allows easy installation into plastic without countersinking.
- Organized Kit & Warranty: Supplied in a reinforced, compartmentalized box (kit style) with clear labeling for easy use. Backed by Kadrick's testing and a 24-month warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FH8WJNYH |
| Best Sellers Rank | #1,265 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Heat Set Inserts |
| Brand | Kadrick |
| Color | Gold |
| Date First Available | July 11, 2025 |
| Exterior Finish | Brass |
| Fastener Type | Insert |
| Finish Type | Unfinished |
| Inside Thread Size | #4 |
| Item Diameter | 8 Millimeters |
| Item Weight | 3.53 ounces |
| Item model number | 122-TQJ-M2 M2.5-300 |
| Manufacturer | Kadrick |
| Material | Brass |
| Metal Type | Brass |
| Number of Pieces | 55 |
| Set Name | 1/4''-20 Threaded Inserts Kit |
| Size | M6.35*H8*D8 55Pcs |
| Thread Class | Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | 1/4-20 |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse |

## Product Details

- **Color:** Gold
- **Exterior Finish:** Brass
- **Fastener Type:** Insert
- **Material:** Brass
- **Thread Size:** 1/4-20

## Images

![55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting - Image 1](https://m.media-amazon.com/images/I/718O7loT7XL.jpg)
![55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting - Image 2](https://m.media-amazon.com/images/I/61Oy8uNEY2L.jpg)
![55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting - Image 3](https://m.media-amazon.com/images/I/716gAK-eHOL.jpg)
![55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting - Image 4](https://m.media-amazon.com/images/I/71NIXGiQ1aL.jpg)
![55 Pcs 1/4''-20 Threaded Inserts for Plastic with Heat Set Tip,1/4''x8mmx8mm Heat Set Inserts Kit,Brass Inserts for 3D Pringting - Image 5](https://m.media-amazon.com/images/I/71F2iYbizrL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for my 3D prints – makes them look way more professional!
*by T***O on February 26, 2026*

The Kadrick 520Pcs M2 M3 M4 M5 Threaded Inserts Assortment Kit is a must-have for anyone doing functional 3D prints. This kit has a huge variety of heat-set threaded inserts (brass, different lengths and sizes: M2, M3, M4, M5) – plenty for all my projects without running out quickly. They install easily with a soldering iron (just heat and press in), seat flush and secure, and create rock-solid threads in PLA, PETG, ABS, etc. No more stripping plastic holes or weak screw connections – bolts thread in smoothly every time. My prints now look and feel way more professional: clean assembly, repeatable strength, and that polished, engineered vibe instead of janky self-tapping screws. Great quality brass, no defects in the batch I got, and the organizer case keeps everything sorted. If you want stronger, cleaner, and more pro-looking 3D printed parts, this assortment is perfect.

### ⭐⭐⭐⭐⭐ 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.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-09*