supply of one coach set of 160 kn air spring assembly for fiat type bogie as per specn. rdso str no. rdso / 2020 / cg- 01 , scope of supply shall be as per clause 4.1 of rdso str no. rdso / 2020 / cg-01. each coach set will consist of four air spring assembly. the following items shall be supplied as per sl no. 12 of annexure #viii of rdso str no. rdso / 2020 / cg-01 as loose and packed separately per air spring assembly. a ) high tensile hexagonal socket head cap screw - 4 nos. b ) hardened and tempered washer - 4 nos. c ) prevailing torque type hexagonal nut m20 - 4 nos. the following additional spares also to be supplied and packed separately per coach set. i ) sealing o- rings - 2 nos. ii ) high tensile hexagonal socket head cap screw # 4 nos iii ) hardened and tempered washer - 4 nos. iv ) prevailing torque type hexagonal nut m20 -4 nos. [ warranty period: 30 months after the date of delivery ] sr. section engineer ( c&w ) hapa , gujarat 1.00 set