---
product_id: 770169183
title: "400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket)"
brand: "ktehloy"
price: "€ 55.15"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ktehloy"
url: https://www.desertcart.ie/products/770169183-400pcs-metric-heat-set-insert-m2-m2-5-m3-m4
store_origin: IE
region: Ireland
---

# Heat resistant up to 300°C 400 precision brass inserts 45° knurled torque grip 400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket)

**Brand:** ktehloy
**Price:** € 55.15
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your 3D prints with brass inserts that mean business!

## Quick Answers

- **What is this?** 400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket) by ktehloy
- **How much does it cost?** € 55.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/770169183-400pcs-metric-heat-set-insert-m2-m2-5-m3-m4)

## Best For

- ktehloy enthusiasts

## Why This Product

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

## Key Features

- • **Premium Brass Durability:** Corrosion-resistant and built to withstand extreme heat and wear.
- • **Massive 400-Piece Assortment:** All your 3D printing and plastic fastening needs covered in one kit.
- • **Precision Threading Excellence:** Smooth, stable threads prevent slippage and ensure lasting reliability.
- • **Effortless Heat-Set Installation:** Compatible with soldering irons and ultrasonic tools for quick, clean fitting.
- • **Universal Thermoplastic Compatibility:** Perfect for PLA, ABS, PETG, and more—engineered for versatile applications.

## Overview

This Ktehloy 400-piece brass threaded insert kit offers a comprehensive range of M2 to M6 sizes, engineered for high thermal resistance and corrosion durability. Featuring precision knurled threading for superior torque grip, these inserts are ideal for heat-setting into thermoplastics like PLA and ABS, making them essential for professional-grade 3D printing, electronics, and plastic assembly projects.

## Description

Ktehloy 400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Assortment Kit, Brass Heat Set Insert for Plastic and 3D Printing Components (Threaded Inserts Ket)

Review: Great inserts. Smooth threads. - M4 seems to be my go to size when I'm using threaded inserts. This pack was a great replacement for the lack of M4s on my workbench. I used them to finish a recent project of attaching a foot to a base for my leg lamp. It worked wonderfully and the price per piece was a nice value. Easy to install and very smooth threads.
Review: Great little kit - Very nice set. Worked well.

## Features

- 【Package Content】- The package includes 400 high-quality metric threaded inserts for plastic heat-setting. With a large quantity available, it meets the needs for connecting numerous 3D printing accessories. The threaded brass inserts are approximately sized at M2 M2.5 M3 M4 M5 M6. Please ensure the nut's size matches your plastic parts effectively.
- 【High-Quality Threaded Inserts】- Crafted from top-tier brass materials, these threaded inserts boast outstanding thermal conductivity, corrosion resistance, and durability. They exhibit remarkable resistance against breakage and deformation. Withstanding temperatures exceeding 300°C / 572°F, they easily endure the harsh heat generated during plastic thermal shaping processes.
- 【Precision Craftsmanship】- High-precision and clear threading ensures stability and reliability, preventing thread slippage during rotation. The 45-degree angled knurling significantly enhances torque resistance and tensile strength, ensuring a stronger fastening. The embedded nuts feature guiding elements, eliminating the need for countersinking or recessing, making your work more convenient and efficient.
- 【Easy to Use】- Brass threaded inserts can be installed into components of a 3D printer through heating or ultrasonic methods, or molded during the injection process. They are also suitable for circuit board assembly and the electronics field. With a common soldering iron, you can easily place them into the holes of 3D prints.
- 【Wide Application】 - These inserts are designed for use with all thermoplastics, including materials like PLA, PETG, ABS, PPS, PP, and others. Whether installing them in 3D printed objects, injection-molded plastic parts, automotive plastic casings, or laptop shells, these inserts offer reliable and durable solutions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CLKDPN65 |
| Best Sellers Rank | #14,750 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Hardware Nuts |
| Brand | Ktehloy |
| Colour | golden |
| Compatible Groove Diameter | 2 Millimeters |
| Customer Reviews | 4.8 out of 5 stars 585 Reviews |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Fastener Type | Insert , Knurled |
| Finish Types | Unfinished |
| Grade Rating | industrial |
| Inside Thread Size | M2, M2.5, M3, M4, M5, M6 |
| Item Diameter | 2 Millimetres |
| Item Dimensions | 17.4 x 9.8 x 1.7 Centimeters |
| Manufacturer | Ktehloy |
| Material | Brass |
| Material Type | Brass |
| Maximum Shear Strength | [HIGH] |
| Metal Type | Brass |
| Model | Threaded Inserts Kit (400Pcs) |
| Number Of Items | 400 |
| Number of Pieces | 400 |
| Part Number | ket-1 |
| Screw Head Style | Flat |
| Set Name | Metric Threaded Inserts Assortment Kit |
| Size Name | M2 M2.5 M3 M4 M5 M6 |
| Thread Class | Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | M2 M2.5 M3 M4 M5 M6 |
| Thread Style | Right Hand |
| Thread Type | Iso Metric |
| UPC | 726929215744 |
| Unit Count | 400.0 Count |

## Product Details

- **Brand:** Ktehloy
- **Colour:** golden
- **Exterior Finish:** Brass
- **Fastener Type:** Insert, Knurled
- **Inside Thread Size:** M2, M2.5, M3, M4, M5, M6
- **Item dimensions L x W x H:** 17.4 x 9.8 x 1.7 Centimeters
- **Material:** Brass
- **Metal Type:** Brass
- **Thread Size:** M2 M2.5 M3 M4 M5 M6
- **Thread Type:** Iso Metric

## Images

![400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket) - Image 1](https://m.media-amazon.com/images/I/91HQ1Owy3rL.jpg)
![400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket) - Image 2](https://m.media-amazon.com/images/I/71QuYMyp7zL.jpg)
![400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket) - Image 3](https://m.media-amazon.com/images/I/81biAKkWHLL.jpg)
![400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket) - Image 4](https://m.media-amazon.com/images/I/71T-xU0bwsL.jpg)
![400Pcs Metric Heat Set Insert, M2 M2.5 M3 M4 M5 M6 Female Thread Knurled Nuts Assortment Kit, Brass Threaded Inserts for Plastic and 3D Printing Components (Threaded Inserts Ket) - Image 5](https://m.media-amazon.com/images/I/71AxUn6X9AL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great inserts. Smooth threads.
*by N***. on 28 October 2025*

M4 seems to be my go to size when I'm using threaded inserts. This pack was a great replacement for the lack of M4s on my workbench. I used them to finish a recent project of attaching a foot to a base for my leg lamp. It worked wonderfully and the price per piece was a nice value. Easy to install and very smooth threads.

### ⭐⭐⭐⭐⭐ Great little kit
*by C***L on 1 May 2026*

Very nice set. Worked well.

### ⭐⭐⭐⭐⭐ Great assortment in one kit
*by C***G on 8 November 2025*

Bought these for some 3d prints I made and they worked beautifully. Be sure to buy the heated inserter though, as well as the various sized tips for it. This make installation almost foolproof. Great quality and a good quantity in this kit.

## Frequently Bought Together

- Ktehloy 400Pcs Threaded Inserts, M2 M2.5 M3 M4 M5 M6 Female Thread Metric Knurled Nuts Assortment Kit, Brass Heat Set Insert for Plastic and 3D Printing Components
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- 3DZWMAN Vertical Heat Pressing Machine,Heat Set Insert Tool,Brass Inserts 3D Printing,Heat Set Insert tip for Thread Knurled Nut M2/M3/M4/M5/M6(1/4)/M8

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-05-23*