The brief

Produce a complete assembly drawing of a ball towing coupling to AS 1100 — enough for someone to build and check it without needing to ask a question.

What I did

• Modelled the assembly and produced a seven-item parts list with per-component masses

• Cut section A-A through the tongue and ball to expose the fastener stack, which no external view shows

• Added a 5:1 detail because the washer and nut interface is unreadable at sheet scale

• Inserted a lock washer and hexagon nut from ISO metric parts catalogue rather than modelling one-offs

• Produced an exploded isometric at 1:2 so assembly order reads at a glance

• Issued at Rev A with a completed revision block