AutoEngCalc - Engineering Calculators

Thread Calculator

Calculate full thread geometry for Metric (ISO) and Unified (UNC/UNF) threads. Includes tolerances, pitch/major/minor diameters, best wire size and thread engagement.

Pitch Diameter Limits

15.350 – 15.462 mm

M16×2 - 6g External Thread

Thread Geometry & Tolerances

Featured: ISO Metric, UNC/UNF • Tolerance Classes • Best Wire

Thread Standard

Nominal Size

Thread Series

Tolerance Class

Gender

Pitch Diameter Tolerance Band

Visual representation of allowable pitch diameter range (GO/NO-GO)

Key Formulas (60° Threads)

Best Wire = 0.57735 × P
Pitch Dia (Ext) = d - 0.64952 × P
Minor Dia (Int) = D - 1.08253 × P

Select thread parameters to see results

Footer - AutoEngCalc