---
product_id: 167450353
title: "84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit"
brand: "rustark"
price: "₨9600"
currency: LKR
in_stock: true
reviews_count: 8
url: https://www.desertcart.lk/products/167450353-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6
store_origin: LK
region: Sri Lanka
---

# 84 pcs assorted sizes 275 MPa max shear strength 304 stainless steel rust-proof 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit

**Brand:** rustark
**Price:** ₨9600
**Availability:** ✅ In Stock

## Summary

> 🔧 Fix it once, fix it right — the ultimate thread rescue kit!

## Quick Answers

- **What is this?** 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit by rustark
- **How much does it cost?** ₨9600 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/167450353-84-pcs-304-stainless-steel-metric-m3-m4-m5-m6)

## Best For

- rustark enthusiasts

## Why This Product

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

## Key Features

- • **Complete Precision Kit:** 84-piece assortment covering M3 to M12 sizes for every repair need.
- • **Effortless Repair Solution:** Restore damaged threads without enlarging holes—easy, efficient, and reusable.
- • **Versatile Professional Use:** Trusted across aviation, automotive, electronics, and heavy machinery industries.
- • **Industrial-Grade Durability:** Crafted from 304 stainless steel ensuring rust resistance and long-lasting performance.
- • **Vibration-Resistant Locking:** Innovative locking design prevents screw loosening under stress and vibration.

## Overview

The Rustark 84 Pcs Wire Thread Insert Kit features 7 metric sizes (M3-M12) of premium 304 stainless steel helicoil inserts. Designed for high precision and durability, it offers rust resistance, vibration-proof locking, and a maximum shear strength of 275 MPa. Packaged in a convenient organizer, this kit is ideal for professionals seeking reliable, reusable screw thread repairs across multiple industries.

## Description

Rustark 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit★Product Specification:Name: Wire Screw Sleeve Material: 304 Stainless SteelSize: M3 M4 M5 M6 M8 M10 M12Quantity: 84 pcsMain Function: Screw Repair ★Product Feature:＊Locking Design: locking the the screw into the threaded hole,avoiding sliding wire, improving strength and stability of screws connection.＊Low Abrasion: High hardness,it has little wear and tear in connection with screw. Long service time, Reusable.＊Rust Resistance: Made of 304 stainless steel. Anti-oxidation layer is formed on the surface. Rust-proof and Anti-corrosion.＊Anti-loose: With certain elastic and even load,eliminate the screw and screw hole deviation between the pitch and tooth type and absorb vibration. ＊Easy to use: The damaged screw holes shall be put into the wire screw sleeve without increasing the diameter of the screw hole.★Package Including:M3 x 0.5 x 2D --------------- 20pcsM4 x 0.7 x 2D --------------- 15pcsM5 x 0.8 x 2D --------------- 15pcsM6 x 1 x 2D ----------------- 10pcsM8 x 1.25 x 2D -------------- 8pcsM10 x 1.5 x2D -------------- 8pcsM12 x 1.75 x 2D ------------ 8pcsTotally 84 piece♥ if you have any problems, pls feel free contact us.

## Features

- 【7 Size Assorted Wire Screw Sleeve Set】The kit contains 7 kinds of size: M3（20pcs, M4(15pcs), M5(15pcs), M6(10pcs), M8(8pcs), M10(8pcs), M12(8pcs). Totally 84 piece. Package into a plastic grids case and each size sorted a grid separately.
- 【304 Stainless Steel】Made of 304 stainless steel, hardness, rust-resistance and anti-corrosion. Not easy to slick, deep thread, no deformation, smooth thread, high precision. High hardness and low abrasion.
- 【Strong Connection 】With certain elastic and even load so that it is resistant to vibration. locking-design allows it lock the the screw into the threaded hole,avoiding sliding wire. Greatly improve strength and stability of screws connection.
- 【Widely Application】Widely used in aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment, radiators, and semiconductor equipment.
- 【 Reliable After-sale Service】We offer you reliable after-sales service. If you have any questions about our products or any problems with your packages, please feel free to contact us. We will reply you within 24 hours and we will try our best to solve the problems until you are satisfied.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Stainless Steel |
| Fastener Type | Helicoil |
| Thread Size | M3, M4, M5, M6, M8, M10, M12 |
| Exterior Finish | Stainless Steel |
| Color | Assorted |
| Metal Type | Stainless Steel |
| Finish Type | Brushed |
| Brand | Rustark |
| Item dimensions L x W x H | 4.96 x 2.56 x 0.87 inches |
| Item Weight | 0.16 Kilograms |
| Thread Type | Iso Metric |
| Inside Thread Size | M3, M4, M5, M6, M8, M10, M12 |
| Thread Style | Internal Metric Unified National Coarse |
| Thread Class | Class 2B |
| Size | One Size |
| Maximum Shear Strength | 275 MPa |
| Number of Pieces | 84 |
| Set Name | Assortment Kit |
| Manufacturer | Rustark |
| Product Dimensions | 4.96 x 2.56 x 0.87 inches |
| Item Weight | 5.6 ounces |
| ASIN | B07Y32V7KK |
| Item model number | R-YT84 |
| Date First Available | September 19, 2019 |

## Product Details

- **Material:** Stainless Steel
- **Fastener Type:** Helicoil
- **Thread Size:** M3, M4, M5, M6, M8, M10, M12
- **Exterior Finish:** Stainless Steel
- **Color:** Assorted

## Images

![84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit - Image 1](https://m.media-amazon.com/images/I/71pyU9nIi-L.jpg)

## Questions & Answers

**Q: can this be used on bike pedal?**
A: Width and depth must be considered to use these coils. Also, they must match the threads on the pedal bolt. If all three match, then yes, it can be used to repair a bike pedal.

**Q: Can thisitem be used on the exhaust system ?**
A: Yes, used it on head bolt to exhaust on a mogorcycle

**Q: does this kit come with an install tool?**
A: No. The install kit is separate

**Q: Does this kit come with a 20mm? I need a outer diameter 20 mm with an inside diameter of 18mm.**
A: no

## Customer Reviews

### ⭐⭐⭐⭐⭐ SST SCREW
*by L***. on April 17, 2025*

Had a project using these screws. Worked just fine. SST should last long time.

### ⭐⭐⭐⭐⭐ Buen vendedor AAA+++
*by M***Z on December 6, 2024*

Muy útil, gracias

### ⭐⭐⭐⭐⭐ Excencial
*by L***S on September 12, 2024*

Este producto me callo del cielo excelente

## Frequently Bought Together

- Rustark 84 Pcs 304 Stainless Steel Metric M3 M4 M5 M6 M8 M10 M12 Wire Thread Inserts Steel Sheath Helicoil Type Screw Repair Sleeve Assortment Kit
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- Loctite Threadlocker Red 271 - Permanent Thread Lock Glue for Nuts, Bolts, & Fasteners, High Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-06*