1. What is Core Diameter of Bolt?

Core Diameter of Bolt is defined as the smallest diameter of the thread of the bolt. The term "minor diameter" replaces the term "core diameter" as applied to the thread.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( d_c \) — Core Diameter of Bolt (m)
• \( A \) — Shear Area of Nut (m²)
• \( h \) — Height of Nut (m)
• \( \pi \) — Archimedes' constant (approximately 3.1416)

Explanation: This formula calculates the core diameter of a bolt based on the shear area of the nut and the height of the nut.

3. Importance of Core Diameter Calculation

Details: Calculating the core diameter is crucial for determining the strength and load-bearing capacity of bolted connections in mechanical engineering applications.

4. Using the Calculator

Tips: Enter shear area of nut in square meters (m²) and height of nut in meters (m). All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between core diameter and major diameter?
A: Core diameter is the smallest diameter of the thread, while major diameter is the largest diameter of the thread.

Q2: Why is the core diameter important in bolt design?
A: The core diameter determines the tensile stress area, which is critical for calculating the bolt's strength and load capacity.

Q3: How does nut height affect the core diameter calculation?
A: The height of the nut directly influences the shear area distribution, which in turn affects the calculated core diameter.

Q4: Can this formula be used for all types of bolts and nuts?
A: This formula is generally applicable for standard bolt and nut combinations, but specialized fasteners may require different calculations.

Q5: What units should be used for accurate calculations?
A: Consistent units must be used throughout the calculation. The calculator uses meters for length and square meters for area.