Stud Hole Details

Spigot Mounted

Although the edges of the holes will be very slightly chamfered to eliminate the sharpness, this does not constitute a countersink

Spigot Nut Spigot








Conical Countersinks

Conical countersinks (60°, 80° or 90°)

Conical Nut Conical







A° = c/sink angle d = hole diameter D = open diameter

Spherical Countersinks

Spherical countersinks (R14,R16,R18,R22)

Spherical Nut Spherical







R = c/sink radius d = hole diameter D = open diameter

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Get In Touch

We are always happy to answer
any questions you may have, so
don't hesitate to get in touch.

Call 01594 838 080

sales@wheelsuk.co.uk