Sorry silly question , chainring bolt sizes

[firestarter]

Hi my Mrs has an old bike and I need some bolts for the triple chainset to join the middle and outer rings what size do I need thanks

[Bearlegged]

Most chainsets will use double chainring bolts (male and female parts) for the middle and outer rings, but there are some odd exceptions out there.

[firestarter]

Ah cheers I wasn't sure if a triple was different sized