The formula to calculate the Minor Diameter of the Internal Thread (d) is:
\[ \text{d} = \text{D} - (1.08253 \times \text{P}) \]
Where:
An internal thread refers to a helical or spiral structure inside a hole, typically in materials like metal, wood, or plastic. This structure is designed to align and engage with an external thread, such as a screw or bolt, to hold pieces together. The creation of internal threads involves processes such as tapping or thread milling. The size and shape of the internal thread must match the external thread for proper function.
Let's assume the following values:
Using the formula:
\[ \text{d} = 20 - (1.08253 \times 1.5) = 18.38 \text{ mm} \]
The Minor Diameter of the Internal Thread (d) is 18.38 mm.
