2025-02-21 00:00:00 Thread & Engineering Standards is a comprehensive reference for engineers, manufacturers, and industry professionals, offering accurate and structured information on threads, fasteners, materials, tolerances, surface treatments, power transmission, and piping standards. This app provides easy access to key mechanical standards used in automotive, aerospace, construction, and manufacturing. 🔹 Key Categories Covered 1️⃣ Thread Standards – Essential for Fastening & Motion ✔ Metric Threads (ISO & DIN) – Standard metric thread sizes and tolerances.