supply of pin for horizontal lever. item 1 to 4 of irs drg. no.w/pn-88, alt-1. material and specification for ite m-1 should be as per is-2062-2011 (ra-2021) with amendment no.1 of nov.2012. gr. e250 a. material and spe cification for item-2 and 3 should be as per drg. no.w/pn-88, alt-1. bulb cotter should be item-3 of drg. no. wd-9 4068-s-01 alt.-4. material and specification for bulb cotter should be is:1079-2017 (ra:2022) gr. hr4 or irs sp ecification no. m-41-1997 read with all amendments including amendment slip no.2 of march-2006. other details confirming to icf specification no. icf/md/spec-008, rev. no.2 of jan-2001. (firm to submit offer with latest ir s drawing and irs specification) [ warranty period: 30 months after the date of delivery ]