Do you mean the connection between the rear lower arm and the lower end of the shock(damper in UK)?
if so, the rear lower arm should have a steel sleeve going through the rubber bushing which matches the fork in bottom of the shock. (I don't know if the fork clamps on to the rubber bushing sleeve. Look at the bolt for signs of rotational friction.)
(very similar design to the 1991 CRX rear suspension.)
I torqued that bolt when the car was up on jack stands. (when I had my CRX and never had any problems, shock spring in my case)
take care,
ChrisS