Here are two links that show the dimensions of standard internal and external snap rings.
Internal https://www.arconring.com/stamped-retaining-rings/internal/
External https://www.arconring.com/stamped-retaining-rings/external/


Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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