---
product_id: 650463486
title: "QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials"
brand: "qsj"
price: "£6.90"
currency: GBP
in_stock: true
reviews_count: 8
category: "Qsj"
url: https://www.desertcart.co.uk/products/650463486-qsj-130pcs-threaded-inserts-heat-set-inserts-kit-m3x4x5-brass
store_origin: GB
region: United Kingdom
---

# Soldering iron tip included M3x4x5 thread size precision 130 premium brass inserts QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials

**Brand:** qsj
**Price:** £6.90
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your 3D prints with brass precision—because your projects deserve the best!

## Quick Answers

- **What is this?** QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials by qsj
- **How much does it cost?** £6.90 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/650463486-qsj-130pcs-threaded-inserts-heat-set-inserts-kit-m3x4x5-brass)

## Best For

- qsj enthusiasts

## Why This Product

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

## Key Features

- • **Durable Brass Build:** Premium brass ensures long-lasting strength and corrosion resistance for your 3D printed projects.
- • **Precision Thread Fit:** M3x4x5 size delivers a perfect, secure fit for standard screws, enhancing fastening reliability.
- • **Complete Installation Kit:** Includes 130 inserts plus a soldering iron tip for seamless heat-set embedding—no extra tools needed.
- • **Stress-Resistant Fastening:** Achieve industrial-grade shear strength (up to 64,000 psi) to withstand tension and repeated use.
- • **Versatile 3D Printing Solution:** Ideal for reinforcing plastic joints, prototypes, and custom parts—upgrade your prints with professional-grade inserts.

## Overview

The QSJ 130Pcs Threaded Inserts Kit features 130 high-quality M3x4x5 brass inserts and a soldering iron tip for easy heat-set installation. Designed specifically for 3D printed plastics, these inserts provide durable, corrosion-resistant, and industrial-strength fastening solutions that enhance the structural integrity of your prototypes and plastic components.

## Description

Product description

Review: great for projects, great for emergencies, great heat inserts - i bought these for a few random projects i had or will have so it just sat in my drawer, soldering iron tips and everything. but when i needed these inserts oh boy did they work beautifully. i don't have the most professional soldering iron but the soldering iron tip this comes with fits great and fits the little inserts good enough for me to melt them into whatever i need and once ive melted them in, boy do they grip. the inserts are tough and tight in the plastic, and it's easy to use to screw in whatever you need. the example i bought a plastic shotgun stock that came in a pretty poor state, where the buttpad was supposed to screw on and there was no hole for the screw. come in these little inserts, went in nice and smooth and worked with my junk drawer mlok screws for a quick, cheap and solid fix, the few dollars i paid for these inserts actually made my shotgun stock worth it's price which is a win.
Review: Great inserts and soldering iron tips! - These are my first heat inserts, bought them bc i was tired of hot gluing 3d printed parts together. Picked these bc it looked like good value for money (it totally is). The included tips fit the inserts and my soldering iron perfectly. The case was kinda jam packed so i 3d printed a holder for the soldering iron tips which freed up a lot of space. Btw if you dont have one already get a 3d printer along with these. I dont think they would work with anything else. For me, the M3 size fits in a hole with a 4.5mm diameter and the M2.5 size fits in a 3.4mm hole. This may vary depending on your printer so i recommend making a test with several different sized holes to see what fits best.

## Features

- 【Packaging】: Each set includes 130 high-quality brass threaded inserts, each measuring M3x4x5, accompanied by a soldering iron tip for easy installation.
- 【Premium Material】: Crafted from high-quality brass, these threaded inserts ensure durability and excellent performance, making them ideal for various 3D printing plastic materials.
- 【Easy to Use】: Pre-drill a pilot hole in the target plastic material. Using a soldering iron, heat up the insert until it reaches the Tm. Align it with the pilot hole and firmly press it into the plastic material. Apply slight downward pressure to ensure proper embedding. Allow it to cool down and solidify within the plastic material.
- 【Versatile Application】 These threaded inserts are perfect for a wide range of applications, such as securing parts in 3D-printed prototypes, reinforcing plastic joints, or adding threaded inserts to plastic components.
- 【Reliable Fastening Solution】: By embedding these threaded inserts, you can achieve a strong and reliable connection, enhancing the structural integrity of your plastic products and ensuring they withstand stress and tension.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7M3LJDL |
| Best Sellers Rank | #16,050 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Nut Inserts |
| Brand | QSJ |
| Color | Gold |
| Compatible Groove Diameter | 3.2 Millimeters |
| Customer Reviews | 4.8 out of 5 stars 258 Reviews |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Fastener Type | Insert |
| Finish Types | Brushed |
| Grade Rating | industrial |
| Inside Thread Size | M3 |
| Item Diameter | 3 Millimeters |
| Item Dimensions | 3.15 x 2.76 x 0.47 inches |
| Manufacturer | qsj-nut |
| Material | Brass |
| Material Type | Brass |
| Maximum Shear Strength | 39000-64000 psi |
| Metal Type | Brass |
| Number Of Items | 180 |
| Number of Pieces | 130 |
| Outside Diameter | 3 Millimeters |
| Part Number | nut180 |
| Screw Head Style | Screw |
| Set Name | Brass Threaded Inserts Set (130pcs, M3x4x5) |
| Size Name | (130pcs) M3x4x5 |
| Thread Class | Class 2B |
| Thread Coverage | Partially Threaded |
| Thread Size | #8-32 |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse |
| Unit Count | 130.0 Count |

## Product Details

- **Color:** Gold
- **Exterior Finish:** Brass
- **Fastener Type:** Insert
- **Material:** Brass
- **Thread Size:** #8-32

## Images

![QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials - Image 1](https://m.media-amazon.com/images/I/717vYKhLzVL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ great for projects, great for emergencies, great heat inserts
*by M***O on May 30, 2025*

i bought these for a few random projects i had or will have so it just sat in my drawer, soldering iron tips and everything. but when i needed these inserts oh boy did they work beautifully. i don't have the most professional soldering iron but the soldering iron tip this comes with fits great and fits the little inserts good enough for me to melt them into whatever i need and once ive melted them in, boy do they grip. the inserts are tough and tight in the plastic, and it's easy to use to screw in whatever you need. the example i bought a plastic shotgun stock that came in a pretty poor state, where the buttpad was supposed to screw on and there was no hole for the screw. come in these little inserts, went in nice and smooth and worked with my junk drawer mlok screws for a quick, cheap and solid fix, the few dollars i paid for these inserts actually made my shotgun stock worth it's price which is a win.

### ⭐⭐⭐⭐⭐ Great inserts and soldering iron tips!
*by F***B on February 4, 2026*

These are my first heat inserts, bought them bc i was tired of hot gluing 3d printed parts together. Picked these bc it looked like good value for money (it totally is). The included tips fit the inserts and my soldering iron perfectly. The case was kinda jam packed so i 3d printed a holder for the soldering iron tips which freed up a lot of space. Btw if you dont have one already get a 3d printer along with these. I dont think they would work with anything else. For me, the M3 size fits in a hole with a 4.5mm diameter and the M2.5 size fits in a 3.4mm hole. This may vary depending on your printer so i recommend making a test with several different sized holes to see what fits best.

### ⭐⭐⭐⭐⭐ Perfect
*by C***Y on April 9, 2026*

I love these things. I use them often in my 3D printing projects. It’s very easy to set them in with a soldering iron, and the included tips work well. You have to design your part in a certain way that allows any extra melted material to have room to escape, or else the plastic comes up into the threads and gums it up.

## Frequently Bought Together

- QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials
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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-02*