Comparison : Item # 01-73-40, 73 Series: Edge Mount x .156 PCB Hole with #6 Self-Tapping Chassies Screw
Item # 01-73-50, 73 Series: Edge Mount x .156 PCB Hole with #6 Self-Tapping Chassies Screw
Item # 01-73-60, 73 Series: Edge Mount x .156 PCB Hole with #6 Self-Tapping Chassies Screw
Item # 01-73-80, 73 Series: Edge Mount x .156 PCB Hole with #6 Self-Tapping Chassies Screw
Item # 01-73-100, 73 Series: Edge Mount x .156 PCB Hole with #6 Self-Tapping Chassies Screw