Height Of Nut Calculator

Formula Used:

\[ h_n = \frac{P}{\pi \cdot \tau \cdot d_c'} \]

Tensile Force on Bolt (P):

Shear Stress in Bolt (τ):

Core Diameter of Threaded Bolt (d'c):

Height of Nut (hₙ):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Height of Nut?

Height of Nut is the length of the nut measured along its central axis. It is an important parameter in mechanical engineering design that determines the strength and stability of bolted connections.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ h_n = \frac{P}{\pi \cdot \tau \cdot d_c'} \]

Where:

\( h_n \) — Height of Nut (m)
\( P \) — Tensile Force on Bolt (N)
\( \tau \) — Shear Stress in Bolt (Pa)
\( d_c' \) — Core Diameter of Threaded Bolt (m)
\( \pi \) — Archimedes' constant (≈ 3.1416)

Explanation: The formula calculates the minimum height of nut required to prevent shear failure of the bolt threads under the applied tensile load.

3. Importance of Height of Nut Calculation

Details: Proper nut height calculation ensures that bolted connections can withstand the applied loads without failure. It prevents thread stripping and ensures the structural integrity of mechanical assemblies.

4. Using the Calculator

Tips: Enter tensile force in Newtons, shear stress in Pascals, and core diameter in meters. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is core diameter of a threaded bolt?
A: Core diameter is the smallest diameter of the thread of the bolt, also known as the minor diameter of the thread.

Q2: How is shear stress in bolt determined?
A: Shear stress is typically determined based on the material properties of the bolt and the required safety factors for the application.

Q3: What factors affect the height of nut required?
A: The required nut height depends on the applied tensile force, bolt material shear strength, and the core diameter of the bolt threads.

Q4: Are there standard nut heights for different bolt sizes?
A: Yes, there are industry standards (ISO, ANSI, etc.) that specify standard nut dimensions for various bolt sizes and strength grades.

Q5: What happens if the nut height is insufficient?
A: Insufficient nut height can lead to thread stripping failure, where the threads shear off under load, compromising the connection integrity.