Where:

- D = Screw head diameter
- θ = Countersink included angle
- n = Depth of countersink recess

Find the value of where

Solving:

Application:

The depth factor for a countersink with an 82° included angle,

Where:

- D = Gauge hole diameter
- θ = Countersink included angle
- T = Gauge thickness

Find the value of where

Application:

The hole size in a 1/8” thick gauge for an 82° countersink,