Not assembled screw jumpers bar, - Allows connection between consecutive blocks, - Perforated jumper bar without captive screw and washer, - The perforated jumper bar must be fitted under the washer and the nut of each block.2 stud terminals M5 x 19.5 mm 0.768 in,Equipment: self locking nut + spring washer + washer,18 mm 0.709 in spacing adding SCH6 or INH3,Two jumpering options: 14 mm 0.551 in spacing with BJH14 and 18 mm 0.709 in spacing (adding INH3) with BJH18,NF F 61-017 designation: BE0018-FF5 (1SNA295012R1700 + SCH6 or INH3).