Drawing Problems - Chapter 8 Copyright Goodheart-Willcox Co., Inc. Chapter 8 Creating and Working with Solid Model Features 211 5. Mechanical 6. Mechanical 7. Mechanical Collar ∅ .375 ∅ .312 .437 ∅ .187 ∅ .500 ∅.625 ∅.625 ∅.250 ∅ 1.750 ∅ .125 ∅ .562 8 30 × ° .875 .500 .250 1.000 1.500 MED .DIAMOND KNURL 2X 45 .062 ° × 90° ∅ 3.000 ∅ 2.937 ∅ 2.375 ∅ 2.500 Diffuser Bushing