supply of spare parts of deep well hand pump under d w and s division chas executive engineer d w and s division chas , supply of spare parts of deep well hand pump india mark-iiconforming to i.s: 9301-1990 with latest amendment ( may be read along with ist amendment is: 15500 ( part 1-7 ) 2004 with latest amendment for spares of india mark- ii respectively ) , hexagonal bolt m 12x1.75x40 mm long common to mark ii & iii , hexagonal nut m12 x 1.75 , high tensile bolt m10 x 1.5 x 40 mm long , nyloc nut m 10 x 1.5 , handle axle ( stainless steel ) , chain with coupling , hexagonal rod coupling ( m12 x 1.75 x 50 mm long ) , nitrile rubber sealing ring ( big ) for lower valve mark - ii , nitrile rubber sealing ring ( small ) for uper valve mark - ii , upper valve assembly ii complete set for india mark ii , lower valve assembly ii complete set for india mark ii , gst @ 5%