Startpage 1. Introduction 2. Basics for Standard-Compliant Design of Technical Drawings 2.1. Selected Form Elements 2.2. View, cuts, and hatching 2.3. Dimensioning technical drawings 2.4. Component Connections 3. Important Standards and Data Sheets 3.1. Access to Standards 3.2. Screws and Threads 3.2.1. Metric ISO Thread 3.2.2. Thread Runouts for ISO Metric Threads and Minimum Screw-In Depth 3.2.3. Threaded Pin with Hexagon Socket 3.2.4. Cap Screw with Hexagon Socket Head 3.2.5. Countersunk Screw with Hexagon Socket Head 3.2.6. Hexagon Nut with Clamping Element 3.2.7. Clearance Holes for Screws 3.2.8. Countersinks for Screws 3.3. Tolerances and fits 3.3.1. Selection and calculation of fits 3.3.2. ISO-fits 3.3.3. General tolerances 3.3.4. Selecting fits: tolerance grades, deviations, toleranced fits