Small Diameter Milling Cutters
Ultra-precision tungsten steel small diameter flat end milling cutters engineered for micro-machining applications. Featuring micro-grain carbide construction, advanced PVD coatings, and exceptional dimensional accuracy for creating intricate details and miniature features in electronics, medical devices, and precision manufacturing.

Ultra-Precision Engineering
Micro-grain tungsten carbide construction with tolerances in the micron range for exceptional accuracy in miniature feature creation.
Advanced PVD Coatings
TiAlN, AlTiN, TiSiN, and DLC coatings provide superior wear resistance, reduced friction, and thermal protection for micro-machining.
High-Speed Capability
Optimized for high RPM operations with exceptional balance and minimal runout for vibration-free micro-machining.
Product Performance
Small Diameter Milling Cutters are a specialized category of milling cutters designed for precision machining, including the fabrication of micro-components or highly detailed features. They are also sometimes referred to as "Decimal Point End Mills" when their cutting diameter is less than 1mm. These tools are primarily made of tungsten steel, a material known for its high hardness and wear resistance.
Tungsten Steel Small Diameter Flat End Milling Cutters are precision-engineered cutting tools, indispensable for machining intricate details, micro-features, and small-scale components with utmost accuracy. Manufactured from high-quality micro-grain or ultra-fine grain solid tungsten carbide, these end mills exhibit exceptional hardness and superior wear resistance.
The performance of these small diameter cutters is defined by their capacity to achieve exceptionally high precision, create features with high aspect ratios, and produce excellent surface finishes on micro-parts. Due to their small physical size, achieving optimal cutting speeds necessitates operation at very high rotational speeds (RPMs), often in High-Speed Cutting (HSC) applications.
Micro-Machining Specifications
- Diameter Range: 0.1mm to 3.0mm for ultra-precision micro-machining applications
- Material: Micro-grain Tungsten Carbide for exceptional hardness and wear resistance
- Tolerances: Micron-level precision for demanding micro-component manufacturing
- Coatings: TiAlN, AlTiN, TiSiN, DLC advanced PVD coatings for enhanced performance
- Applications: MEMS, Electronics, Medical devices, and precision manufacturing
Our Products

2 Edge Tungsten Steel Uncoated Small Diameter End Milling Cutter
F25Milling Steel And Nonferrous Metal Materials Such As Copper And Aluminum

2 Edge Tungsten Steel Coated Small Diameter End Milling Cutter
F26Milling HRC60° steel, cast iron and stainless steel

2 Edge Tungsten Steel Uncoated Small Diameter Ball Head End Milling Cutter
F27Milling Steel And Nonferrous Metal Materials Such As Copper And Aluminum

2 Edge Tungsten Steel Coated Small Diameter Ball Head End Milling Cutter
F28Milling Stainless Steel And Steel Hardness Under HRC60°

4 Edge Tungsten Steel Uncoated End Milling Cutter
F29Milling Steel And Nonferrous Metal Materials Such As Copper And Aluminum

4 Edge Tungsten Steel Coated End Milling Cutter
F30Milling HRC60° steel, cast iron and stainless steel
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Technical Specifications
Material & Construction
Micro-grain and ultra-fine grain solid tungsten carbide construction ensuring maximum hardness, wear resistance, and dimensional stability for precision micro-machining applications. Manufactured using advanced powder metallurgy techniques for consistent quality.
Coating & Surface Technology
Advanced PVD coatings including TiAlN, AlTiN, TiSiN, and DLC nano-composite layers providing superior hardness, reduced friction coefficient, thermal barriers, and improved chip flow characteristics for demanding micro-machining operations.
Dimensional Parameters
Diameter range from 0.1mm to 13mm with micron-level tolerances. Available in 2-flute and 4-flute configurations with optimized helix angles from 30° to 45°. Standardized shank diameters (3mm, 4mm, 1/8") for universal compatibility.
Application Scenarios & Processing
Application Scenarios
- Electronics Industry: Precision machining of circuit boards, connectors, and micro-components requiring exceptional dimensional accuracy
- Medical Device Manufacturing: Critical applications for surgical instruments, implants, and micro-medical devices with biocompatible surface requirements
- Watchmaking and Jewelry: Ultra-fine detail work for precision timepieces and intricate jewelry components
- Optics and Photonics: Manufacturing of lens components, fiber optic connectors, and precision optical assemblies
- Research and Development (MEMS/NEMS): Micro and nano-scale manufacturing for advanced research applications
Machining Operations
- Micro-Milling & Fine Detail: Primary application for creating extremely small features with micron-level precision in miniature components
- Engraving & Marking: High-precision engraving operations for product identification, decorative marking, and micro-text applications
- Small Slotting & Keyway Cutting: Creating narrow slots, micro-keyways, and precision grooves in small-scale assemblies
- Precision Pocketing: Micro-pocket milling for complex internal geometries and thin-walled component manufacturing
- High Aspect Ratio Features: Machining deep, narrow features where conventional tools cannot achieve required precision
Main Functions
Primary Functions
- Ultra-High-Precision Feature Creation: Machine extremely small and intricate features with micron-level dimensional accuracy and tight geometric tolerances for advanced manufacturing applications
- Superior Surface Finish Generation: Produce excellent, smooth surface quality on miniature parts, often eliminating the need for subsequent finishing operations
- Micro-Scale Geometry Machining: Enable fabrication of components with features in the sub-millimeter range, pushing manufacturing technology boundaries
Performance Benefits
- Minimized Cutting Forces: Allow precise machining of delicate, fragile, or thin-walled parts without causing distortion, stress, or damage to critical components
- Miniaturization Enablement: Support the ongoing trend towards smaller, lighter, and more complex parts across advanced industries including electronics and medical devices
- Versatile Micro-Machining: Perform comprehensive milling operations including slotting, pocketing, profiling, and contouring at micro-scale with exceptional precision
Need Professional Small Diameter End Mill Solutions?
Our micro-machining specialists can help you select the optimal small diameter end mill configuration for your precision manufacturing requirements. From electronics to medical devices, we provide comprehensive micro-machining solutions with exceptional dimensional accuracy.