Cross-Sectional Area Table for Metric Threads

The cross-sectional area of a metric thread is a critical parameter in mechanical engineering, particularly in the design and analysis of fasteners. It determines the load-carrying capacity of the thread. The cross-sectional area, often referred to as the “stress area,” is the effective area that bears the load.

Below is a table listing the thread specification and the corresponding cross-sectional area for standard metric threads. The units for diameter are in millimeters (mm), and the units for cross-sectional area are in square millimeters (mm²).

Standard Source: GB/T16823.1-1997 Stress Cross-Sectional Area and Bearing Area of Threaded Fasteners

Importance in Mechanical Engineering:

• Load Calculation: The cross-sectional area is used to calculate the tensile strength of the threaded fastener.
• Design and Safety: Ensuring that the fastener can withstand the applied loads without failure is crucial for the safety and reliability of mechanical assemblies.

Application:

• Fastener Selection: Engineers use these values to select appropriate fasteners for specific applications, ensuring that they meet the required load-bearing capacity.
• Stress Analysis: In structural and mechanical design, accurate stress analysis is essential to prevent mechanical failure.

This table provides a quick reference for engineers and designers working with metric threads, facilitating accurate and efficient design and analysis of threaded components.