---
product_id: 123610992
title: "SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8\") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals"
brand: "speed tiger"
price: "฿2924"
currency: THB
in_stock: true
reviews_count: 10
category: "Speed Tiger"
url: https://www.desertcart.co.th/products/123610992-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3
store_origin: TH
region: Thailand
---

# AlTiBN ultra heat resistance 4-flute precision cutting micrograin carbide toughness SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals

**Brand:** speed tiger
**Price:** ฿2924
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut sharper, last longer — own the edge of precision!

## Quick Answers

- **What is this?** SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals by speed tiger
- **How much does it cost?** ฿2924 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/123610992-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3)

## Best For

- speed tiger enthusiasts

## Why This Product

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

## Key Features

- • **Ready for Pro & DIY:** Individually packaged for sharpness preservation—ideal for hobbyists and industry pros alike.
- • **Durability Meets Value:** Micrograin carbide construction ensures long-lasting toughness without breaking the bank.
- • **Precision Perfect Cuts:** Achieve professional-grade accuracy with ±0.02mm tolerance for flawless finishes every time.
- • **Versatile Steel Mastery:** Effortlessly mills carbon, alloy, pre-hardened, and hardened steels up to HRC61 plus cast iron.
- • **Unmatched Heat Resistance:** AlTiBN coating outperforms traditional coatings, maintaining sharpness under extreme temperatures.

## Overview

The SPEED TIGER Micrograin Carbide Square End Mill features a 4-flute design with a 3/8" cutting diameter, crafted from durable micrograin carbide and coated with advanced AlTiBN for superior heat resistance. Engineered for high-precision milling of various steels and cast iron, it delivers professional accuracy within ±0.02mm tolerance, making it a top choice for both DIY enthusiasts and professionals seeking reliable, long-lasting performance.

## Description

SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals: desertcart.com: Industrial & Scientific

Review: Works As Advertised - Sharp and true. Does what I expect from a carbide end mill.
Review: Great product, worth every penny - Bought these for a hobby. Received them and like that they are packaged individually, thus helping keep them sharp. Used them on a firearm building project and only eneded up using one. But stayed sharp and met the needs of what I was using it for. If your are a hobbyist and looking for some high quality milling bits with out having to pay a premium these are the ones to go to.

## Features

- ✅ APPLICATION - Our carbide tools are highly effective at machining various types of steel such as Carbon Steels (~HB225), Alloy Steels (HB225~325), Pre-hardened Steels (up to HRC45), Hardened Steels (HRC40~61), and Cast Iron.
- ✅ AlTiBN COATING - This coating, made of titanium aluminum boron nitride (AlTiBN), offers exceptional stability at high temperatures and surpasses the heat resistance of TiAlN, TiN, or TiCN coatings.
- ✅ HIGH-PERFORMANCE MATERIAL - This end mill is made from micrograin carbide, which gives it exceptional toughness, durability, and machinability. It performs brilliantly and is an excellent value for its price.
- ✅ FINE WORKMANSHIP - Our products deliver outstanding high accuracy with an error of -0.02mm, empowering users to achieve professional cutting quality effortlessly.
- ✅ DEDICATED SUPPORT - Please don't hesitate to contact us on desertcart if you need the Cutting Condition Data. We want to ensure you receive the best product that meets your requirements.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FSLS7X3 |
| Best Sellers Rank | #6,858 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Square Nose End Mills |
| Brand | SPEED TIGER |
| Cut Type | square end |
| Cutting Diameter | 9.53 Millimeters |
| Cutting Length | 2.5 Inches |
| Date First Available | July 23, 2018 |
| End Cut Type | Square End |
| Finish Type | AlTiBN |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | ISE3-8-4T |
| Manufacturer | SPEED TIGER |
| Material | Carbide |
| Number of Cutting Edges | 4 |
| Number of Flutes | 4 |
| Product Dimensions | 2.5"L x 0.38"W |
| Shape | Square |
| Size | 3/8 in |
| Tolerance Held | Precision |

## Product Details

- **Cutting Diameter:** 9.53 Millimeters
- **Cutting Length:** 2.5 Inches
- **Finish Type:** AlTiBN
- **Material:** Carbide
- **Number of Flutes:** 4

## Images

![SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals - Image 1](https://m.media-amazon.com/images/I/31Gvp0ipUgL.jpg)
![SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals - Image 2](https://m.media-amazon.com/images/I/31O-pC+Y9vL.jpg)
![SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals - Image 3](https://m.media-amazon.com/images/I/41xJpfZiRFL.jpg)
![SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals - Image 4](https://m.media-amazon.com/images/I/51+729yQCIL.jpg)
![SPEED TIGER Micrograin Carbide Square End Mill - 4 Flute - ISE3/8 4T (1 Piece, 3/8") - for Milling Alloy Steels, Hardened Steel, Metal & More – Mill Bits Sets for DIYers & Professionals - Image 5](https://m.media-amazon.com/images/I/51Ww9XUa4PL.jpg)

## Available Options

This product comes in different **Size, Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works As Advertised
*by N***J on August 27, 2025*

Sharp and true. Does what I expect from a carbide end mill.

### ⭐⭐⭐⭐⭐ Great product, worth every penny
*by B***N on January 25, 2025*

Bought these for a hobby. Received them and like that they are packaged individually, thus helping keep them sharp. Used them on a firearm building project and only eneded up using one. But stayed sharp and met the needs of what I was using it for. If your are a hobbyist and looking for some high quality milling bits with out having to pay a premium these are the ones to go to.

### ⭐⭐⭐⭐⭐ Worked great for engraving hardwood
*by W***D on January 2, 2026*

I used these bits in a Foredom jewelry engraving tool along with some StayMax Metal hollow number guided to engrave numbers in my beer flights project. Then I mixed powdered turquois in resin to make these numbered holes.

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**Shop now:** [https://www.desertcart.co.th/products/123610992-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3](https://www.desertcart.co.th/products/123610992-speed-tiger-micrograin-carbide-square-end-mill-4-flute-ise3)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-04*