---
product_id: 364414006
title: "Sweet 300PCs 5 Values M2-M6 Female Thread Knurled Nuts Brass Threaded Insert Embedment Nuts Hydraulic Welded Joint Assortment Kit Perfect for 3D Printing & Injection Molding"
brand: "swpeet"
price: "₩46529"
currency: KRW
in_stock: true
reviews_count: 4
category: "Swpeet"
url: https://www.desertcart.kr/products/364414006-sweet-300pcs-5-values-m2-m6-female-thread-knurled-nuts
store_origin: KR
region: South Korea
---

# 300 pcs multi-size kit Precision ±0.01mm threads Durable rust-proof brass Sweet 300PCs 5 Values M2-M6 Female Thread Knurled Nuts Brass Threaded Insert Embedment Nuts Hydraulic Welded Joint Assortment Kit Perfect for 3D Printing & Injection Molding

**Brand:** swpeet
**Price:** ₩46529
**Availability:** ✅ In Stock

## Summary

> 🔩 Elevate your build with precision brass inserts—because your projects deserve the best!

## Quick Answers

- **What is this?** Sweet 300PCs 5 Values M2-M6 Female Thread Knurled Nuts Brass Threaded Insert Embedment Nuts Hydraulic Welded Joint Assortment Kit Perfect for 3D Printing & Injection Molding by swpeet
- **How much does it cost?** ₩46529 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/364414006-sweet-300pcs-5-values-m2-m6-female-thread-knurled-nuts)

## Best For

- swpeet enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** Designed for ultrasonic, heat, or injection molding embedment—no back-drilling or countersinking required.
- • **Precision Engineered Threads:** Ultra-clean, burr-free threads with less than 0.01mm tolerance ensure seamless, professional-grade assembly.
- • **Premium Rust-Resistant Brass:** Crafted from high-grade brass for superior oxidation resistance and longevity—built to last beyond trends.
- • **Complete 300-Piece Assortment:** Five essential sizes (M2-M6) cover every project need with organized compartments for zero mix-ups.
- • **Versatile Industrial Applications:** Perfect for 3D printing, injection molding, electronics, automotive, and medical device enclosures.

## Overview

The Sweet 300PCs Brass Threaded Insert Kit offers a comprehensive selection of M2 to M6 female thread knurled nuts made from durable, rust-resistant brass. Engineered with precision threads (±0.01mm tolerance), these inserts are ideal for professional-grade 3D printing, injection molding, and plastic fastening applications. Organized in a sturdy compartmentalized box, this kit ensures easy access and prevents mix-ups, making it a must-have for engineers and makers seeking reliable, long-lasting threaded solutions.

## Description

★ Swpeet 300Pcs 5 Values M2 M3 M4 M5 M6 Female Thread Knurled Nuts Brass Threaded Insert Embedment Nuts ★ ♥ ♥ WHY CHOOSE US? ♥ ♥ ✔ 1. Made of durable brass, it has excellent rust resistance and oxidation resistance, which can ensure long-term use. ✔ 2. It conforms to the standardized metric system. The average error is less than 0.01 mm. The threads are very sharp, clean, accurate and burr-free. Accurate size makes your installation or maintenance easier. ✔ 3. Widely used in laptop plastic case, desktop computer plastic case, GPS plastic case, router plastic case, mobile phone plastic case, unlimited communication facilities plastic case, household appliances plastic case, automobile, electrical appliances, medical, electronic and other plastic case. ▲ Product Specification: ● Color: Brass ● Type: M2 M3 M4 M5 ● Inner diameter: 4mm, 6mm, 8mm and 10mm ● Outer diameter: 3.5mm, 5mm, 6mm and 7mm ● Packing Quantity: 370 PCS ● Material: High-quality durable brass ● Product Name: Brass threaded insert nut assortment kit ▲ Package includes ● M2*3*3.5 ------------ 35Pcs ● M2*4*3.5 ------------ 35Pcs ● M2*6*3.5 ------------ 35Pcs ● M2*8*3.5 ------------ 35Pcs ● M3*6*5 ------------ 25Pcs ● M3*8*5 ------------ 25Pcs ● M3*10*5 ------------ 25Pcs ● M4*6*6 ------------ 15Pcs ● M4*8*6 ------------ 15Pcs ● M4*10*6 ------------ 15Pcs ● M5*6*7 ------------ 10Pcs ● M5*8*7 ------------ 10Pcs ● M5*10*7 ------------ 10Pcs ● M6*10*7 ------------ 5Pcs ●M6*12*7 ------------ 5Pcs ▲ Notes: ✿ Small parts. Not for children under 3 years old.

Review: Easy to Use with a professional touch - They are very good and easy to use. They inserted into plastic very easy. Would have been nice to have the insert tools as part of the kit but for now using a pointed soldering iron without any problems
Review: M2 M3 M4 M5 M6 Female Thread Knurled Nuts Brass Threaded Insert Embed - Drill saw bits very useful if you need to enlarge the hole

## Features

- [ Packaging includes ]: In this kit, You will get 300Pcs M2 M3 M4 M5 M6 Female Thread Knurled Nuts in sufficient quantity for your use, plastic boxes are durable in any way, and all parts are in their compartments to prevent mixing during transportation.
- [ Various Sizes ]: M2 M3 M4 M5 M6 Female Thread Knurled Nuts Kit, Total 15 different sizes can meet your different meets. Special thread design make it easier to operate.
- [ High Quality Material ]: These Female thread knurled nuts are made of durable brass with excellent rust resistance and oxidation resistance to ensure long-term use. Rust-proof, anti-corrosive, non-toxic, acid-resistant, and does not release harmful substances.
- [ Why You Choose Us]: These Brass Threaded Insert Embedment Nuts can be installed into the tapered holes of the threads by ultrasound or heat, or moulded during injection. The material of the nuts is brass, which can resist heat. Hardness and toughness are more than 10 times higher than aluminum, high processing difficulty, complicated production process.
- [ Widely used ]: Swpeet threaded insert nuts are widely used in injection molding, for fastening, can be installed in the cone hole by ultrasonic or heat, or in the injection process. Since the insert has a conduction valve, there is no need to back-drill and counter-sink the hole.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08YYGRCBG |
| Best Sellers Rank | 131,555 in DIY & Tools ( See Top 100 in DIY & Tools ) 928 in Nut & Bolt Sets |
| Brand Name | Swpeet |
| Colour | Brass |
| Compatible Groove Diameter | 4 Millimeters |
| Country Of Origin | China |
| Customer Reviews | 4.7 out of 5 stars 379 Reviews |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Exterior finish | Brass |
| Fastener Type | Knurled |
| Fastener type | Knurled |
| Finish Types | Brass |
| Finish type | Brass |
| Grade Rating | commercial |
| Inside Thread Size | M4 |
| Item Diameter | 3.5 Millimetres |
| Item Dimensions | 25 x 10 x 25 millimetres |
| Item Weight | 0.22 Kilograms |
| Manufacturer | Swpeet |
| Material | Metal |
| Material Type | Metal |
| Maximum Shear Strength | 410 MPa |
| Metal | Brass |
| Metal type | Brass |
| Number of Pieces | 300 |
| Size | Assortment Kit |
| Thread Class | Coarse |
| Thread Style | Left Hand |
| Thread Type | ISO Metric |

## Product Details

- **Brand:** Swpeet
- **Colour:** Brass
- **Exterior finish:** Brass
- **Fastener type:** Knurled
- **Finish type:** Brass
- **Item dimensions L x W x H:** 25 x 10 x 25 millimetres
- **Item weight:** 0.22 Kilograms
- **Material:** Metal
- **Metal type:** Brass
- **Thread type:** ISO Metric

## Images

![Sweet 300PCs 5 Values M2-M6 Female Thread Knurled Nuts Brass Threaded Insert Embedment Nuts Hydraulic Welded Joint Assortment Kit Perfect for 3D Printing & Injection Molding - Image 1](https://m.media-amazon.com/images/I/81BDPs6f15S.jpg)

## Available Options

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

## Questions & Answers

**Q: What type of screw do these require? I'm attempting to extend an extended magazine into a plastic button.**
A: Screw sizes M1-M6

**Q: What size of pilot hole should i drill for the 1/4 in insert for oak?**
A: 1/8

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to Use with a professional touch
*by D***D on 8 March 2025*

They are very good and easy to use. They inserted into plastic very easy. Would have been nice to have the insert tools as part of the kit but for now using a pointed soldering iron without any problems

### ⭐⭐⭐⭐⭐ M2 M3 M4 M5 M6 Female Thread Knurled Nuts Brass Threaded Insert Embed
*by A***R on 2 November 2024*

Drill saw bits very useful if you need to enlarge the hole

### ⭐⭐⭐⭐⭐ Good Quality
*by S***R on 14 February 2024*

I bought these for a couple of 3D printed projects and they worked really well. Create a hole just a fraction smaller than the chosen insert, heat the insert up (I used a candle) and force it into the hole of the printed part, it is that simple. Nice selection of sizes good quality.

## Frequently Bought Together

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-24*