While finger tight is ok for 7mm connectors, a 7mm torque wrench insures uniformity, & reaching the 12 in-lbs a 7mm interface requires from a torque wrench.
Calibration Certificates: We outsource our torque wrenches. Some don’t have any cal certificate (ex Huber Suhner 74Z-0-0-21, our CT-SMA8C, etc). Some come with a certificate which is dated because its been on the shelf for awhile (CT-516-8 etc). All parts are tested 100% in ISO9000 certified facilities. Should you need a current Cal Certificate, we can have this done at a local lab; $60 ea, 2 weeks; see product at bottom of each page to order.