HIGH TENSILE HEXAGONAL HEAD BOLT SIZE: M [ HIGH TENSILE HEXAGONAL HEAD BOLT SIZE: M20 X 2. 5MM X 355MM LONG TO IS 1364 PART 1 & DOUBLE NUTS TO IS: 1364 PART 3. PROPERTY CLAUSE 10. 9 WITH DUBLE SPRING WASHERS TO IS: 3063 MAKE: TVS OR UNBRAKO OR LPS. NOTE: MATERIAL SHALL BE SUPPLIED ALONGWITH MANUFACTUR S TEST CERTIFICATE. ]