---
product_id: 512375127
title: "ruthex 1/4\" Threaded Inserts - 20 Pieces RX-1/4“-20x12.7 Brass Heat Set Insert for Plastic Parts - Inches knurled Nuts - Insert by Heat into 3D Printing Components"
brand: "ruthex"
price: "C$1257"
currency: NIO
in_stock: true
reviews_count: 8
category: "Ruthex"
url: https://www.desertcart.ni/products/512375127-ruthex-1-4-threaded-inserts-20-pieces-rx-1-4
store_origin: NI
region: Nicaragua
---

# Heat-Set Installation 1/4" UNC Thread Size Lead-Free Brass Durability ruthex 1/4" Threaded Inserts - 20 Pieces RX-1/4“-20x12.7 Brass Heat Set Insert for Plastic Parts - Inches knurled Nuts - Insert by Heat into 3D Printing Components

**Brand:** ruthex
**Price:** C$1257
**Availability:** ✅ In Stock

## Summary

> 🔥 Lock in strength, unlock your 3D print’s potential! 🔩

## Quick Answers

- **What is this?** ruthex 1/4" Threaded Inserts - 20 Pieces RX-1/4“-20x12.7 Brass Heat Set Insert for Plastic Parts - Inches knurled Nuts - Insert by Heat into 3D Printing Components by ruthex
- **How much does it cost?** C$1257 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/512375127-ruthex-1-4-threaded-inserts-20-pieces-rx-1-4)

## Best For

- ruthex enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Pack of 20 Inserts:** Ready to upgrade multiple components with consistent, professional-grade fastening.
- • **Superior Brass Construction:** Lead-free brass ensures corrosion resistance and long-lasting thermal conductivity.
- • **Precision 1/4" UNC Threading:** Engineered for seamless fit in 3D printed parts and industrial plastics.
- • **Effortless Heat-Set Embedding:** Simply use a soldering iron or ultrasonic tool for quick, secure installation.
- • **Universal Plastic Compatibility:** Perfectly anchors in PLA, PETG, ABS, and more for versatile 3D printing projects.

## Overview

The ruthex 1/4" Threaded Inserts set includes 20 lead-free brass knurled nuts designed for heat or ultrasonic embedding into thermoplastic 3D printed parts. Featuring a 1/4"-20 UNC thread, these inserts provide a firm, corrosion-resistant hold compatible with popular plastics like PLA and ABS, ensuring durable, reusable, and professional-grade fastening solutions for makers and engineers.

## Description

ruthex 1/4" Threaded Inserts - 20 Pieces RX-1/4“-20x12.7 Brass Heat Set Insert for Plastic Parts - Inches knurled Nuts - Insert by Heat into 3D Printing Components: desertcart.com: Tools & Home Improvement

Review: Top notch brand. - Impressive. Worked very well, easy to press in. Threads nice and clean.
Review: Easy to use - Great product. Works as intended. Easy to heat with a soldering iron. No special tip required, just a large cone tip.

## Features

- 1/4" THREAD INSERTS FOR YOUR 3D PRINTED PARTS: The ruthex threaded nuts can be retrofitted by heat or ultrasounds into parts of 3D printers from e.g. Anycubic or Prusa. With the help of heat from a soldering iron or ultrasounds, the knurled insert nuts are simply embedded in a blind- or through hole
- FIRM HOLDING WITH EASY APPLICATION: Thanks to the geometry of the threaded sleeve, it holds firmly in the pressure part. The opposing spiral-shaped knurled nuts ensure a high balanced tightening and loosening torque, as well as a high tightening force. The guide, insertion has been greatly simplified
- STABLE & LONG-LASTING THREAD INSERTS: The inserts with internal thread lead free brass, which ensures optimum corrosion resistance and thermal conductivity. thermal conductivity. This means that each insert nut can be used for a long time and is easy to use. The reusability of the insert nut is also possible by carefully removing them from the pressure part when they are no longer needed
- SUITABLE FOR A VARIETY OF PLASTICS: The inserts are designed for all thermoplastics. For example, the knurled nuts hold in PLA, PETG, ABS, PPS, PP and many more. As soon as the plastic of the part around the brass sleeve cools and hardens, the threaded sleeve is firmly anchored
- PRACTICAL THREAD INSERT SET: The ruthex threaded inserts set are lead free and RX-1/4“-20x12.7 consists of 20 insert nuts with 1/4" internal thread and a length of 12.7 mm. The threaded sleeves can be inserted by ultrasonic and heat embedding

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MTS6ZZQ |
| Best Sellers Rank | #707 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Nut Inserts |
| Brand | ruthex |
| Color | UNC Threaded Insert |
| Compatible Groove Diameter | 0.25 Inches |
| Customer Reviews | 4.8 out of 5 stars 4,870 Reviews |
| Drive Style | Spline |
| Exterior Finish | Brass |
| Fastener Type | Insert |
| Finish Types | Brass |
| Grade Rating | commercial |
| Inside Thread Size | 1/4 inch |
| Item Diameter | 0.25 Inches |
| Item Dimensions | 4.72 x 3.15 x 0.39 inches |
| Item Height | 10 millimeters |
| Manufacturer | ruthex |
| Material | Brass |
| Material Type | Brass |
| Metal Type | Brass |
| Number of Pieces | 20 |
| Screw Head Style | Flat |
| Size Name | 1/4“-20x12.7 (20pcs) |
| Thread Class | Coarse |
| Thread Coverage | Fully Threaded |
| Thread Size | 1/4"-20 |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse |

## Product Details

- **Material:** Brass
- **Fastener Type:** Insert
- **Thread Size:** 1/4"-20
- **Exterior Finish:** Brass
- **Color:** UNC Threaded Insert

## Images

![ruthex 1/4" Threaded Inserts - 20 Pieces RX-1/4“-20x12.7 Brass Heat Set Insert for Plastic Parts - Inches knurled Nuts - Insert by Heat into 3D Printing Components - Image 1](https://m.media-amazon.com/images/I/71T4NfgP9oL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top notch brand.
*by T***N on January 11, 2026*

Impressive. Worked very well, easy to press in. Threads nice and clean.

### ⭐⭐⭐⭐⭐ Easy to use
*by M***D on July 28, 2025*

Great product. Works as intended. Easy to heat with a soldering iron. No special tip required, just a large cone tip.

### ⭐⭐⭐⭐⭐ This is the only brand to buy, consistently perfect. Never fail.
*by T***R on August 15, 2025*

Buy these, no matter what. You’ll regret buying from others, promise. I use thousands of these for my products for customers. They are essential to my business. I recently tried to buy another brand that was a little cheaper and it was a bad mistake. About half of them have damaged or defected threads, but you don’t know until after you try a screw in them. This has caused me many failed prints, a lot of money wasted. All because I tried to save a few bucks. I will never go to any other brand, this is literally the only one I trust. I don’t leave reviews, but after the nightmare with the other brand that starts with a U, I felt it was imperative I help out others. Don’t buy anything else.

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**Shop now:** [https://www.desertcart.ni/products/512375127-ruthex-1-4-threaded-inserts-20-pieces-rx-1-4](https://www.desertcart.ni/products/512375127-ruthex-1-4-threaded-inserts-20-pieces-rx-1-4)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-12*