supply of uncoupling gear arrangement of wagons , uncoupling gear arrangement of wagons bearing piece assembly, consisting of followin g 04 items [1] bearing piece to rdso drg. no. wd-00046-s-01, alt. 8, item no. 4, [part drg. no. w/bd- 6284, alt-2], qty. 02 nos. [2] washer 50 dia. x 12 mm thick to rdso drg. no. wd-00046-s-01, alt. 8, it em no. 5 (part drg. w/bd-6285, alt. nil) qty. - 04 nos. bottom washer to be welded with sr. no. 1 as sh own in drg. [3] safety strap for bearing piece to rdso drg. no. wd-00046-s-01, alt. 8, item no. 6 (part drg. no. w/bd-6318, alt. nil) qty. 02 nos. to welded with sr. no. 1 as shown in drawing. [4] pin 25 mm dia x 68 mm long to rdso drg. no. wd-00046-s-01, alt. 8, item no. 7, qty. 02 nos. to be welded as sh own in drawing. note: items at sr. no. 1,2,3 and 4 to be supplied in assembled condition without brack et as per drawing and top washer of part drg. no. w/bd-6285 to be supplied in loose. material and spe cification confirming to is 2062 : part-1 : 2025, gr. e 250 a. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]