supply of one detc coach set air spring assembly [180kn capacity] , one detc coach set air spring assembly [180kn capacity] consisting of four nos of air spring assembly, 20 nos of high tensile hexagonal socket -head cap screw m 20x50 long , 20 nos of a22 hardened & tempered washer with 300 hv class (300hv-370 hv) hardness, 20 nos of a 22 prevailing torque type hexagonal nuts (with non metallic inse rts) m 20:b and 4 nos of sealing o ring to set list no. detc30057309 rev. 2 & rdso spec no. rdso/cg/s/23002 rev.-01, july 2025 [ warranty period: 72 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]