Hex. Head Bolt complete ( for the Hex. Head Bolt M20X120 ) for Vertical damper fixing for mainline coaches to ICF Drg. no. T- 0- 5- 674, Items- 1, 2 & 3 ( Col- I ), alt- c. ( Note: Bolt & Nut shall be of Make/ Brand TVS or DFL or UNBRAKO or TUFF only ) AND Split Pin ISO 1234- 4x36- St. to ICF Drg. no. WTAC3- 0- 5- 305, item- 20, alt. j/ 4.