Thread drawing help, please

Exercise $13\mathrm{.}3$ Draw fasteners, arranged as shown. At $($a$)$ draw $\frac{7}{8}-9$ UNC$-2$A $4$ Hex Cap Screw. At $($b$)$ draw $1\frac{1}{8}-7$ UNC$-2$A $4\frac{1}{4}$ Sq Hd Bolt. At $($c$)$ draw $\frac{3}{8}-16$ UNC$-2$A $1\frac{1}{2}$ Flat Hd Cap Screw. At $($d$)$ draw $\frac{7}{16}-14$ UNC$-2$A $1$ Fil Hd Cap Screw. At $($e$)$ draw $\frac{1}{2}1$ Headless Slotted Set Screw. At $($f$)$ draw front view of No$.1010$ Woodruff key. Draw simplified or schematic thread symbols as assigned. Letter titles under each figure as shown. $($Some dimensions are given to help you match the sheet layout.$)$