supply of shank wear plate for coupler body for upgraded ht cbc. drawing no. : rdsos drg. no.sk. 62724, alt. 31 , item 10. material and specification : as per drawing and conforming to rdsos spec.no. wd-70- bd-10, (rev. 4). , shank wear plate for coupler body for upgraded ht cbc. drawing no. : rdsos drg. no. sk. 62724, alt. 31 , item 10. material and specification : as per drawing and conforming to rdsos spec. no. wd-70- bd-10, (r ev. 4). (warranty period : upto 72 months from the date of delivery.) [ warranty period: 72 months after the dat e of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 la cs ] ]