U.S. Standard Hexagonal Bolt Head
An illustration of the hexagonal bolt head showing measurements. The measurement of diameter, D, is used to calculate the dimensions. The diameter of the head and the nut, H, is 1 ½D ₌ ⅛, and the distance of T is half the diameter.
Keywordsnuts, nut, screw, bolt, bolts, screws, drafting, mechanical drawing, Drawing U.S Standard Hexagonal Bolt Head, Hexagonal Bolt Head with Nut, Bolthead
Anthony, Gardner C. Elements of Mechanical Drawing (Boston, MA: D. C. Heath & Co., 1904)