2	Diameter of head of socket wrench (mm)	$d_{w} = 1.85 d_{b} + 8$	26.5	30.00
3	Thickness of protecting flange (mm)	$0.5 t_{f} = t_{p f}$	7.50	7.50
4	Outside diameter of flange (mm)	$2 ⌊ \frac{d_{h}}{2} + d_{w} + t_{p f} + 2 c_{B} ⌋$	82.00	90.00