Workshop charts

Reference tables for the person standing at the bench with the part in hand. One number, from a table, in the units you are working in — and the source it came from printed under it, so you can check it before you cut.

The chart that is ready

Drill bit size chart and tap and drill chart
Number, letter and fractional drill diameters; tap drill and clearance holes for UNC inch threads and for metric threads. Inches and millimetres side by side, a filter that takes a thread or a drill, and it prints.

Not here yet

Four more charts are planned and none of them is written. They are listed because it is better to say what is missing than to leave you looking for it. There is nothing to click on yet.

Bolt torque — tightening torque by bolt size, grade and thread, dry and lubricated.
O-ring sizes — the standard dash sizes with inside diameter and cross-section, and the groove they sit in.
Wire and breaker sizes — conductor gauge against current and run length, and the breaker that belongs with it.
Hydraulic fittings — how to tell one thread from another by thread count and diameter, and what mates with what.