1 Useful Formulas for Geometric Entities2 Running and Sliding Fits—American National Standard3 Clearance Locational Fits—American National Standard4 Transition Locational Fits—American National Standard5 Interference Locational Fits—American National Standard6 Force and Shrink Fits—American National Standard7 International Tolerance Grades8 Preferred Metric Hole Basis Clearance Fits—American National Standard9 Preferred Metric Hole Basis Transition and Interference Fits—American National Standard10 Preferred Metric Shaft Basis Clearance Fits— American National Standard11 Preferred Metric Shaft Basis Transition and Interference Fits—American National Standard12 Screw Threads, American National, Unified, and Metric13 Twist Drill Sizes—American National Standard and Metric14 Acme Threads, General Purpose15 Bolts, Nuts, and Cap Screws—Square and Hexagon— American National Standard and Metric16 Cap Screws, Slotted and Socket Head—American National Standard and Metric17 Machine Screws—American National Standard and Metric18 Keys—Square, Flat, Plain Taper, and Gib Head19 Screw Threads, Square and Acme20 Woodruff Keys—American National Standard21 Woodruff Key Sizes for Different Shaft Diameters22 Pratt and Whitney Round-End Keys23 Washers, Plain—American National Standard24 Washers, Lock—American National Standard25 Wire Gage Standards26 Taper Pins—American National Standard27 Cotter Pins—American National Standard28 Form and Proportion of Datum Symbols29 Form and Proportion of Geometric Characteristic Symbols30 Form and Proportion of Geometric Dimensioning Symbols31 Form and Proportion of Modifying Symbols32 Form and Proportion of Dimensioning Symbols and Letters33 Comparison of Symbols34 Types of Scales35 Additional Geometric constructions