Free Engineering Reference
Practical reference tables for everyday mechanical design work — dimensions, standards and tolerances.
BS EN 1092-1, ASME B16.5 and BS Table D/E/F/H dimension tables. PCD, bolt sizes, raised face diameter and side-by-side comparison tool.
ANSI B36.10 & B36.19 wall thickness by schedule (5s to XXS), OD and DN for NPS 1/8 to NPS 60.
Metric tap drill sizes and clearance hole diameters for M1.5 to M20 — 75% and 50% thread engagement with American drill equivalents.
Metric, BSP and UNC/UNF thread data — pitch, major/minor diameters and thread engagement depths.
ISO 286 hole and shaft tolerances, running clearance, transition and interference fit data.
Steel grade cross-reference, stainless steel properties, yield strength, and common material equivalents.