---
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: "₹ 1530"
currency: INR
in_stock: true
reviews_count: 9
category: "Qsj"
url: https://www.desertcart.in/products/650463486-qsj-130pcs-threaded-inserts-heat-set-inserts-kit-m3x4x5-brass
store_origin: IN
region: India
---

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

**Brand:** qsj
**Price:** ₹ 1530
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your 3D prints with rock-solid brass inserts!

## 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?** ₹ 1530 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/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

- • **All-in-One Heat Set Kit:** 130 brass inserts + soldering tip for seamless installation
- • **Effortless Installation:** Heat, press, and cool—no glue, no mess, just solid fastening
- • **Versatile Reinforcement:** Ideal for prototypes, repairs, and enhancing plastic joint integrity
- • **Durable Brass Construction:** Engineered for long-lasting strength and corrosion resistance
- • **Precision Fit for 3D Prints:** Optimized M3x4x5 size ensures perfect embedment in plastic materials

## Overview

The QSJ 130Pcs Threaded Inserts Heat Set Kit features 130 high-quality M3x4x5 brass inserts and a soldering iron tip, designed specifically for embedding into 3D printed plastics. Crafted from durable brass, these inserts provide a reliable, corrosion-resistant fastening solution that enhances the strength and longevity of plastic components. Easy to install with the included soldering tip, this kit is perfect for professionals and makers looking to upgrade their prototypes or repair plastic parts with precision and confidence.

## Description

QSJ 130Pcs Threaded Inserts Heat Set Inserts Kit M3x4x5 Brass Insert Nut with Soldering Iron Tip for 3D Printed Plastic Materials: desertcart.com: Industrial & Scientific

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.
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.

## 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 | #11,937 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Nut Inserts |
| Brand | QSJ |
| Color | Gold |
| Compatible Groove Diameter | 3.2 Millimeters |
| Customer Reviews | 4.7 4.7 out of 5 stars (228) |
| 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 |
| Item Weight | 50 Grams |
| Manufacturer | qsj-nut |
| Material Type | Brass |
| Maximum Shear Strength | 39000-64000 psi |
| Metal Type | Brass |
| Number of Pieces | 130 |
| 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 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.

### ⭐⭐⭐⭐⭐ 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 heat set threadedd inserts.
*by A***R on December 9, 2025*

The inserts were very easy to install, and work great. The only downside is there is no way to secure the soldering iron tool, so it would constantly slide off. A setscrew would have been a great addition to keep in place while working.

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*Product available on Desertcart India*
*Store origin: IN*
*Last updated: 2026-05-07*