ENQUIRY OF DOUBLE START SQURE THREAD SCREW AND NUT1)M24 X4P SCREW = TOTAL LENGTH 263 MM , THREADING LENGTH 200 MM , ONE END DIA 14 MM X23 MM LENGTHOTHER END DIA 20 MM X40 LENGTH(DRAWING ATTACHED) MATERIAL IS 1875 CLASS 42)M24 X 4P NUT = SIZE 40 X 40 MM SQURE X123 MM LENGTH (DRAWING ATTACHED) MATERIAL IS 2062QTY= 500 SETS(ONE SCREW AND ONE NUT)PLEASE SEND YOUR QUOTATION