THIS MECHANICAL CLAMPING KIT CONSISTS OF A 5/8-INCH (16 MM) DIAMETER PLUG WITH 18 THREADS PER INCH, ON THE O.D., (PART NUMBER 625-250-PLUG) SCREWS INTO THE CENTER HOLE IN THE LOWER PLATFORM. IT HAS A 1/4-INCH (6.3 MM) BY 20 THREADS PER INCH, CENTER HOLE TO ACCEPT A LENGTH OF CONTINUOUS THREADED STOCK. A SIMILAR PLUG WITH A .280-INCH (7.1 MM) DIAMETER CLEARANCE HOLE, PART NUMBER 625-280-PLUG SCREWS INTO THE UPPER PLATFORM. A RATHER LONG PIECE OF CONTINUOUS THREADED STOCK PASSES THROUGH THIS HOLE AND THROUGH A SELF-ALIGNING SPHERICAL TILT, PART NUMBER 75-ST-270. THIS SPHERICAL TILT IS USED TO ISOLATE ANY X-Y-Z MISALIGNMENT OF THE CLAMPING FORCE. IT ALSO INCLUDES A BALL THRUST BEARING WHICH DECOUPLES THE TORQUE OF THE CLAMPING AND A TRUNCATED BALL. THE ENTIRE ASSEMBLY IS TIED TOGETHER BY A ONE-INCH ( 1", 25.4 MM ) DIAMETER, KNURLED CLOCKING NUT (PART NUMBER 250-20-CN). THIS STAINLESS STEEL CLOCKING NUT INCLUDES A WING NUT AND WASHER TO BE USED AS A JAM NUT UNDER CONDITIONS OF MODERATE VIBRATION. THE ENTIRE KIT, INCLUDING ALL OF THE PARTS REQUIRED, IS PART NUMBER KP-CLAMP.