In 23 years of servicing our big square baler, I have never used a torque wrench on the plunger knife shear bolts. There isn’t room to get a socket on them. Crowfoot can only take a limited amount of torque being open end, plus the torque number needs to be refigured given the offset of a crowfoot. Never has one come loose. Learn how to use a double wrenching procedure using the next larger wrench size than what fits the fastener, and with modest effort you can get it tight enough with the box end of a wrench.