May 14, 2020 - 03:28 AM
31313 - is the 16KS - There are no Head Bolts
31326 - is the 16KW - The Only Head bolts I can think of are the 2 bolts holding the Yoke to the Head - they are torqued to 240 ft. lbs. at the factory - see note from instructions below
"It is not recommended that the Hitch be disassembled any further than removing the Pivot Pin. It should be noted the bolts holding the Head to the Yoke are tightened to 240 ft./lbs. of torque."