CalculationMetric Thread Data
Free metric thread data lookup
Calculates basic dimensions and thread stress area of a 60° metric thread.
Formulas
d₂ = d − 3√3/8 · PD₁ = d − 5√3/8 · P; d₃ = d − 17√3/24 · PAₛ = π/4 · ((d₂ + d₃)/2)² Sources: ISO 68-1: metric basic profile; ISO 724: basic dimensions of metric threads.