---
product_id: 639244653
title: "M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs"
brand: "nacx"
price: "A$48"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/639244653-m8-x-1-25mm-x-3d-helicoil-wire-inner-thread
store_origin: AU
region: Australia
---

# M8 x 1.25mm precision pitch 3D nominal length (24mm) for deep thread grip 304 stainless steel corrosion & heat resistant M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs

**Brand:** nacx
**Price:** A$48
**Availability:** ✅ In Stock

## Summary

> 🔩 Upgrade your threads, secure your projects — don’t get left with loose ends!

## Quick Answers

- **What is this?** M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs by nacx
- **How much does it cost?** A$48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/639244653-m8-x-1-25mm-x-3d-helicoil-wire-inner-thread)

## Best For

- nacx enthusiasts

## Why This Product

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

## Key Features

- • **Unmatched Durability:** Crafted from premium 304 stainless steel for superior corrosion resistance and long-lasting strength.
- • **Precision Engineered Fit:** Exact 8mm drilling diameter ensures seamless installation and maximum thread engagement.
- • **Automated Burr-Free Finish:** High-precision automated manufacturing guarantees smooth, burr-free inserts for effortless use.
- • **Enhanced Load Distribution:** Uniform stress distribution eliminates thread wear and improves connection reliability.
- • **Vibration Absorbing Design:** Anti-loose helix structure enhances thread stability and prevents loosening under stress.

## Overview

These M8 x 1.25mm x 3D Helicoil wire thread inserts are precision-crafted from durable 304 stainless steel, designed to fit an 8mm drilling diameter with a 24mm nominal length. Engineered for corrosion resistance, vibration absorption, and uniform load distribution, they significantly enhance thread strength and longevity in low-strength materials. Each pack includes 70 burr-free inserts produced with automated technology for flawless installation and maximum reliability.

## Description

Specifications: M8 Wire Thread Inserts. Material: 304 Stainless Steel. Fit Drilling Diameter: 8mm Thread Pitch: 1.25mm/ 0.05''. Norminal Length: 3D/ 24mm. Outter Diameter: 9.85mm -10.1mm/ 0.38''-0.39''.  Feature: Deep thread, uniform pitch, stable stress and good tightening force. Uniform stress, not easy to slip, smooth inside and outside, easy to use. Corrosion resistance, oxidation resistance, heat resistance, high strength, and toughness. Stainless steel threaded inserts can effectively improve threaded connections and greatly improve reliability. Threaded inserts are used in a variety of low strength materials to greatly improve the wear resistance of threaded connections and avoid thread damage.  Package Included:  70Pcs M8 Wire Thread Inserts. Each insert is formed using automated production technology to ensure product processing accuracy, with a detailed and burr free appearance.

## Features

- Fit Drilling Diameter: 8mm/ 0.31'', Thread Pitch: 1.25mm/ 0.05'', Nominal length: 3D/ 24mm(0.94'').
- Made of high quality 304 stainless steel, durable, corrosion-resistant and rust proof.
- Anti-loose Design: Especially aircraft and other products that require a high coefficient of insurance.
- It can make the load on the thread more uniform, eliminate the pitch and tooth type deviation between the thread and the screw hole, and can absorb vibration, improve the thread connection strength and fire resistance.
- Package Included: 70Pcs M8 Wire Thread Inserts. Each insert is formed using automated production technology to ensure product processing accuracy, with a detailed and burr free appearance.

## Product Details

- **Material:** Stainless Steel
- **Fastener Type:** Helical
- **Thread Size:** M8 x 1.25
- **Exterior Finish:** Polished
- **Color:** Silver

## Images

![M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs - Image 1](https://m.media-amazon.com/images/I/81pgs6uJzQL.jpg)
![M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs - Image 2](https://m.media-amazon.com/images/I/71fKqj5FGDL.jpg)
![M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs - Image 3](https://m.media-amazon.com/images/I/71nGFQkZ5GL.jpg)
![M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs - Image 4](https://m.media-amazon.com/images/I/818RtK7A9nL.jpg)
![M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs - Image 5](https://m.media-amazon.com/images/I/71SztANBctL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Work nicely in fiberglass.
*by G***. on April 21, 2025*

These worked very nicely to add machine thread holes to fiberglass on my boat. I was tired of repairing holes where wood screws directly into fiberglass stripped out or left stress cracks. This also works better than a wood screw in thicker fiberglass where wood screws tend to bind and snap off. The other benefit is that wood screw threads cutting into gelcoat tend to create stress points that start stress cracks in the gelcoat that radiate out from the screws. Using a helicoil with a machine thread screw seems to eliminate that problem. It is important to use an anticorrosion compound like Tef-Gel in the marine environment since, while these helicoils are stainless steel, they are not a marine-grade alloy.

### ⭐⭐⭐⭐⭐ Saved a few parts from the trash
*by J***Z on August 8, 2025*

Used these M3×0.5 (1D) coils to fix stripped threads on an aluminum bracket and a 3D-printer part. The coils are consistent, no burrs, and standard M3 screws run in smooth with zero wobble. Tangs snapped cleanly with a punch. Once installed, the threads feel stronger than the originals.Tips: you’ll need the proper M3×0.5 STI tap and about a 3.2 mm drill. A dab of blue Loctite on the outside of the coil keeps it put. 1D length is perfect for shallow holes; if you need more engagement, look for 1.5D/2D.

### ⭐⭐⭐⭐⭐ inexpensie replacement for the name brand coil
*by D***N on March 21, 2025*

We use these for our laser cut acrylic projects for when we need screws in to the plastic. These always work

## Frequently Bought Together

- M8 x 1.25mm x 3D Helicoil Wire Inner Thread Inserts, Coiled Wire Helical Screws, 304 Stainless Steel, Metric, 40Pcs
- 100pcs Stainless Steel SS304 Coiled Wire Helical Screw Thread Inserts M8 x 1.25 x 2D Length for Helical Repair
- BILITOOLS M8x1.25 Thread Repair Kit, HSS Drill Helicoil Repair Kit Metric

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**Shop now:** [https://www.desertcart.com.au/products/639244653-m8-x-1-25mm-x-3d-helicoil-wire-inner-thread](https://www.desertcart.com.au/products/639244653-m8-x-1-25mm-x-3d-helicoil-wire-inner-thread)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-14*