Dimension in mm.
Specification Conform to is : 7821 - 1975 / ISO 2283 - 1972.
Type has to be mentioned while ordering
Type A - 5 Deg. Angle with Long Taper Lead
Type B - 10 deg. Angle with spiral point.
Type C - 20 Deg. Angle with Short Taper Lead.
Type D - 10 Deg. Taper Angle without Spiral point.