Precision Engineering for
& Machining Accuracy
A comprehensive technical hub for engineers, machinists, and designers. Compare standards, calculate thread dimensions, analyze tolerance zones, and explore detailed geometry diagrams — all in one place.
Tools
Explore our comprehensive tools and databases designed specifically for CNC machinists and engineers.
Thread Profile Comparasion
This Thread Profile Comparison Tool is a high-precision digital utility designed for engineers, machinists, and designers to visually reconcile the differences between the two most dominant global fastening systems: ISO Metric and ASME Unified Imperial.
ISO Metric Thread Tool
Learn about the most common general-purpose screw thread standard worldwide, including M-profile geometry, notations, and tolerances.
ASME Unified Thread Calculator
Discover the United States standard for screw threads, covering UNC, UNF, and UNEF series along with their respective tolerance classes.
Latest Blogs
Deep dives, guides, and articles to improve your machining knowledge.
ISO3 Articles
ISO (International Organization for Standardization) is an independent international body that develops global standards for quality, safety, and efficiency. It was established in 1947 and operates in over 160 countries. ISO standards ensure products and services are reliable, safe, and compatible worldwide.
- •ICS Standards Explained: Structure, Categories & How to Use the International Classification for Standards
- •ISO Fasteners – Types, Classification & Engineering Applications
- •The Origin of ISO: The London 1946 Meeting
ASME1 Articles
The American Society of Mechanical Engineers (ASME) is a globally recognized organization that develops technical codes and standards for mechanical engineering. Founded in 1880, ASME was created to improve industrial safety and standardize engineering practices after frequent boiler accidents.
- •ASME Standards – Origin & History
Comprehensive Data
Full database of ISO 261 (Metric) and ASME B1.1 (Unified) threads with standard series and reliable exact limit checks.
Visual Geometry
Dynamic, zoomable SVG generation showing accurate microscopic profile dimensions, pitch, and root/crest variations based on sizes.
Verified Compliance
Computations strictly replicate complex ISO 965 and ASME B1.1 standard tolerances for internal and external fits precisely.