Metric Coarse Thread Chart

Introduction

Quick Answer: The Metric Coarse Thread Chart provides a quick reference for common ISO Metric coarse thread sizes and their basic dimensions.

The Metric Coarse Thread Chart provides a quick reference for common ISO Metric coarse thread sizes and their basic dimensions.

Use this chart to find thread designation, nominal diameter, pitch, major diameter, pitch diameter, minor diameter, and other basic thread dimensions.

Metric coarse threads are commonly used for general-purpose mechanical fastening and are often the default pitch for standard ISO Metric thread sizes.

Metric Coarse Thread Chart

Click Thread Link to check more data for each thread.

Need More Information About Metric Coarse Threads?

The Metric Coarse Thread Guide provides additional information about metric coarse threads, including their designation, characteristics, applications, and comparison with Metric Fine threads.

Read the Metric Coarse Thread Guide →

How to Use the Metric Coarse Thread Chart

Metric thread designations normally include the letter M, the nominal diameter, and, where necessary, the pitch.

For example:

M10 (× 1.5)

indicates:

• M → Metric thread
• 10 mm → nominal diameter
• 5 mm → thread pitch

Use the chart to compare the required dimensional parameters for different metric coarse thread sizes.

Frequently Asked Questions

Q1: What is a Metric Coarse thread?

A Metric Coarse thread is a standard ISO Metric thread using the commonly specified coarse pitch for a given nominal diameter.

Q2: Is the pitch always shown for Metric Coarse threads?

The pitch may be omitted in some simplified designations when the standard coarse pitch is understood. However, including the pitch provides greater clarity and helps avoid ambiguity.

Q3: What is the difference between Metric Coarse and Metric Fine?

For the same nominal diameter, a Metric Fine thread uses a smaller pitch than the corresponding Metric Coarse thread.

Q4: Can Metric Coarse and Metric Fine threads be interchanged?

No. Threads with different pitches are not directly interchangeable, even when they have the same nominal diameter.

Q5: Are Metric Coarse threads the most common metric threads?

Metric coarse threads are widely used for general-purpose fastening and are often selected as the standard pitch where no special fine-pitch requirement exists.

Related Thread Resources

• Metric Coarse Thread Guide
• Metric Fine Threads Chart
• Metric Fine Thread Guide
• ISO Metric Thread Standard
• UNC Thread Chart
• UNF Thread Chart
• Thread Definitions
• Thread Standards
• Thread in EMI Filters
• Thread in Feedthrough Capacitors

LCA Thread Charts

The LCA Thread Charts are designed as a practical engineering reference for quickly locating common thread dimensions and comparing standardized thread sizes.

Use the chart that matches your thread system, or explore the individual Thread Specifications and Thread Engineering Guides when more detailed information is required.

Thread Definitions → Thread Standards → Thread Charts → Thread Specifications → Thread Engineering Guides

Engineering Support CTA: Selecting a threaded EMI filter or feedthrough capacitor? Share the thread standard and size, panel thickness, voltage/current, capacitance, and environmental requirements with LCA engineers. View Thread Mount Feedthrough Filters