Voltage 24, No./mount. holes 3, No./terminals 4, Terminal 50/mm 10-32 UNF, Terminal 15A/mm 10-32 UNF, Servicing 42MT, B+ 1/2" UNC, Terminal 15a Bolt, Terminal 50 Bolt, Coil Bolt Diameter 1/2" UNC, Outer Diameter 68.50, Remarks Insulated return., Amount of Mounting Holes 3, Total Length 157.00