Lug nut mystery

[arcamedies]

While replacing bearings on my 93 Excella I discovered 2 different lug nuts on the rig, just bought it last year. I know the thread is 1/2 X 20 but the cone angle is the question. Auto stores list two, 60 or 90 angle plus a myriad of depths. Does anyone know which is the correct lug nut, sizes, the dealer says the info they have stops before 1993.

[Excella CM]

If the hole is chamfered, then use the 60* nut. If the hole has a square edge, use the 90* nut. The depth doesn't matter unless the lug is closed in which case just make sure the lug is deep enough to accommodate the stud with a little to spare.