---
product_id: 205185460
title: "iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS"
brand: "iplusmile"
price: "R336"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Iplusmile"
url: https://www.desertcart.co.za/products/205185460-iplusmile-100pcs-m3-threaded-insert-for-3d-printing-brass-heat
store_origin: ZA
region: South Africa
---

# Precision 5.7x4.6mm fit Heat resistant to 300°C Knurled design for max grip iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS

**Brand:** iplusmile
**Price:** R336
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in strength, heat up your builds, and never settle for less!

## Quick Answers

- **What is this?** iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS by iplusmile
- **How much does it cost?** R336 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/205185460-iplusmile-100pcs-m3-threaded-insert-for-3d-printing-brass-heat)

## Best For

- iplusmile enthusiasts

## Why This Product

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

## Key Features

- • **Flawless Fit Every Time:** Engineered with exact 5.7mm diameter and 4.6mm length for seamless integration into 3D printed parts—no countersinking needed.
- • **Universal Compatibility:** Works flawlessly with PLA, PETG, ABS, Nylon, and more—perfect for Prusa builds, industrial prototypes, and custom robotics.
- • **Unmatched Grip Strength:** Eight-figure knurled pattern locks melted plastic in place, delivering superior torque resistance and preventing pull-out under stress.
- • **Heat-Set for High Performance:** Brass inserts heat up evenly to 300°C, ensuring smooth press-fit installation without thread damage or deformation.
- • **Bulk Pack for Continuous Innovation:** 100 premium inserts per pack keep your projects moving without interruption—always be ready to upgrade your 3D prints.

## Overview

The iplusmile 100Pcs M3 Brass Heat Set Threaded Inserts are precision-engineered for 3D printing applications, featuring a 5.7mm outer diameter and 4.6mm length. Crafted from high-thermal-conductivity brass, they withstand installation temperatures up to 300°C, ensuring smooth, durable press-fit into plastics like PLA, PETG, and ABS. Their unique eight-figure knurled design maximizes mechanical bonding, delivering exceptional torque resistance and pull-out strength. Ideal for professional-grade 3D printer builds, industrial enclosures, and custom prototypes, this bulk pack of 100 inserts guarantees you’re always equipped for your next innovation.

## Description

iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS: desertcart.com: Industrial & Scientific

Review: Stay put - These inserts work great because the cut pattern locks them in place. The 3D printed part will delaminate before these inserts come out. These are far superior to the dumbbell shaped ones. One side has a decreased diameter which holds them in the hole prior to soldering. These are very easy to insert. You will need a large soldering iron tip. Otherwise, the iron can poke through the insert and melt the bottom of the hole. The hole should be slightly deeper than the insert so the screw can go all the way through. Setting the iron to 400°F (205°C) works well for PLA. A solder iron can be used to remove them too and then the melted plastic can be cleaned off with a propane torch.
Review: Perfect size for 3d printing. It is a great match for a Voron build.(Too Small for a voron sorry) - The actual size is 4.6W by 5.6 L @m3. In measuring the width is slightly smaller or 4.4mm. The perfect insert where the ooze is minimal and insertion is easy. The bottom has a smaller ring to make it easier to align the insert. Again it works perfectly for some Voron parts a Voron takes 3mm x 4w x 5 d

## Features

- PRECISE DIMENSIONS FOR PERFECT FIT: Engineered with high-precision tolerances, these M3 heat-set threaded insert feature a 5.7mm outer diameter and 4.6mm length. Designed specifically for 3D printing, they fit perfectly into standardized mounting holes without the need for messy countersinking or oversized boss designs
- SUPERIOR HEAT CONDUCTIVITY & FLOW: These threaded inserts for plastic crafted from sturdy brass with excellent thermal conductivity. These m3 heat set inserts nuts heat up quickly and evenly, allowing for a smooth, seamless press-fit into your 3D printed parts. Supports high-temperature installation up to 300°C (572°F) without deforming or clogging threads
- MAXIMUM TORQUE & PULL-OUT RESISTANCE: M3 threaded insert featuring a "Eight-Figure" symmetrical knurled design. This deep, multi-directional knurling allows the melted plastic to flow into the grooves, creating an incredibly strong mechanical bond that resists high torque and prevents pull-out, even in heavy-duty applications
- WIDE COMPATIBILITY & VERSATILITY: The ideal solution for adding durable metal threads to thermoplastic parts. M3 heat inserts compatible with PLA, PETG, ABS, ASA, Nylon, and more. Essential for 3D printer builds, industrial enclosures, automotive prototypes, and custom DIY robotics
- 100PCS BULK PACK: Get a professional grade supply for your large-scale manufacturing or continuous hobbyist projects. Each pack contains 100 premium M3 threaded inserts, ensuring you always have reliable hardware on hand for your next innovation. (Recommended hole size: approx. 4.0mm - 4.2mm depending on material)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B087NBYF65 |
| Best Sellers Rank | #276,967 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in Heat Set Inserts |
| Brand | iplusmile |
| Color | Golden |
| Compatible Groove Diameter | 3 Millimeters |
| Customer Reviews | 4.5 4.5 out of 5 stars (307) |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Fastener Type | Insert |
| Finish Types | Polished |
| Grade Rating | industrial |
| Inside Thread Size | M 3 |
| Item Diameter | 0.46 Centimeters |
| Item Dimensions | 0.22 x 0.18 x 0.18 inches |
| Item Weight | 36 Grams |
| Manufacturer | iplusmile |
| Material Type | Brass |
| Metal Type | Brass |
| Model | 26M124IFS3M11RG |
| Number of Pieces | 100 |
| Part Number | 26M124IFS3M11RG |
| Screw Head Style | Flat |
| Set Name | m3 heat set inserts |
| Size Name | Small |
| Thread Class | Metric Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | M3 |
| Thread Style | Right Hand |
| Thread Type | Iso Metric |
| Unit Count | 100.0 Count |

## Product Details

- **Color:** Golden
- **Exterior Finish:** Brass
- **Fastener Type:** Insert
- **Material:** Brass
- **Thread Size:** M3

## Images

![iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS - Image 1](https://m.media-amazon.com/images/I/81Zl6umGDdL.jpg)
![iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS - Image 2](https://m.media-amazon.com/images/I/61y1rPWo4lL.jpg)
![iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS - Image 3](https://m.media-amazon.com/images/I/81h-EBNNgOL.jpg)
![iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS - Image 4](https://m.media-amazon.com/images/I/71Dab3OGViL.jpg)
![iplusmile 100Pcs M3 Threaded Insert for 3D Printing, Brass Heat Set Inserts 5.7 x 4.6mm, Knurled Nuts for Injection Molding & Plastic Parts, Compatible with Prusa, PLA PETG ABS - Image 5](https://m.media-amazon.com/images/I/71TqVP1p6oL.jpg)

## Available Options

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

## Questions & Answers

**Q: did I understand correct? brass plated copper?**
A: Keep in  mind that brass is usually about 60% copper, so the core is probably cooper which is then plated with brass (a copper/zinc alloy) to prevent corrosion/oxidation of the copper.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Stay put
*by R***R on August 27, 2021*

These inserts work great because the cut pattern locks them in place. The 3D printed part will delaminate before these inserts come out. These are far superior to the dumbbell shaped ones. One side has a decreased diameter which holds them in the hole prior to soldering. These are very easy to insert. You will need a large soldering iron tip. Otherwise, the iron can poke through the insert and melt the bottom of the hole. The hole should be slightly deeper than the insert so the screw can go all the way through. Setting the iron to 400°F (205°C) works well for PLA. A solder iron can be used to remove them too and then the melted plastic can be cleaned off with a propane torch.

### ⭐⭐⭐⭐⭐ Perfect size for 3d printing. It is a great match for a Voron build.(Too Small for a voron sorry)
*by G***N on October 18, 2021*

The actual size is 4.6W by 5.6 L @m3. In measuring the width is slightly smaller or 4.4mm. The perfect insert where the ooze is minimal and insertion is easy. The bottom has a smaller ring to make it easier to align the insert. Again it works perfectly for some Voron parts a Voron takes 3mm x 4w x 5 d

### ⭐⭐⭐⭐⭐ Using for 3d printed parts, works very well. Good height for install.
*by J***R on September 30, 2023*

It took a little while to get this going. I got the insert installing tips for my soldering system. It is important to have the holes the correct size printed and to have them set into the holes before you try to heat and press them in. Keep the soldering iron straight and square. Then all the other parts will align nearly perfectly. I use them for several parts that need to mate with screws. Makes life better than trying to insert nuts into the side of or back of parts where you have to hold the nut in tight places. And you don't need as long of screws to assemble things. Getting the flush with the surface takes some practice, but gets easy with practice. You will get a little bit of rise in the plastic around these inserts, that may need to be scraped off with a razor or sharp knife.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-23*