supply of set of wagon door parts.,door check spring for boxn wagon. rdsos drg. no wd-23018-s-01, alt- nil or latest, item no. , 13 material & specification: as per drawing. [ warranty period: 30 months afte r the date of delivery ] ] , flap door chainless cotter rivet . drawing no :- wd - 23018 - s - 01, alt.- 1, item no. 2 [ war ranty period: 30 months after the date of delivery ] ] , door hinge foot for boxn wagon as per rdso drg.no-wd-23018-s-02, item no.-6 m aterial and specification as per drawing. [ warranty period: 30 months after the date of delivery ] ] , pin with washer for hinge 20x101mm for flap door boxnhl wagon as per rdso drg.no-wd- 23018-s-02 , alt-nil or latest, item no.- 7a & 7b (in loose condition) [ warranty period: 30 months after t he date of delivery ] ] , locking bolt & its bracket for flap door arrangement to serlys drg no. grc/w-327, alt-nil. [ warranty period: 30 months after the date of delivery ] ]