Screw [ 58 dia x 453 ] for screw coupling extract of rdso drg. no. sk-99002. alt-5, item 3. material and specification as per drawing

Enhanced capacity screw coupling assembly for coaching stock, to drawing/ specification rdso spec. c-9505 [revised -aug 2001], rdso/sk- 99001, alt. no. 4, item no.-1 to 17 in assembled condition.

Air brake hose coupling support for air brake on wagons to rdso drawing no. sk-73552 alt-6, item-1to 4. material & specification to is:2062/2011 with amendment no.l of nov 2012, grade e-250 a

Supply of air bellow duct set, each set of air bellow ducts consisting of : 01 no of supply air bellow duct, 02 nos. of fresh air bellow ducts & 2 nos return air bellow ducts. the bellow ducts should be made of meta aramid/para aramid fabric with silicon rubber coating on both sides and the metallic frames at both ends of the ducts i.e. rmpu side & coach shell side, shall be as per rdso specification no. rdso/pe/spec/ac/0197-2020 (rev.-1) & rdso drawing no. rdso/pe/sk/ac/0069-2004 (rev.3), sui