I am using a 28x10 wooden prop on my 100 cc equivalent motor with 6 M5 Bolts (cap) and wondered what torque I should tighten them to in Newton Metres (NM). Thanks.

Per Desert Aircraft:

M5
75 in-lbs/wood props (8.5NM)
90 in-lbs/carbon props. (10.2NM)

Cheers RCAddiction that's great. Thanks for taking the time

Glad it was helpful. You are very welcome.

It's a good idea to check them often.
Mike