supply of washer for centre pivot assy. shackle lock and lock pinwasher for centre pivot assy. shackle lock and lock pin,washer for centre pivot assy. to rdso drg. no. wd-85079-s-2, alt.-28, item 4. material conforming to is: 2062- 2011 w ith amendment no. 1 of nov. 2012, grade: e 250 a, color: red paint (is:5,code:538) for steel plate and is:5192: part- i:1994, grade: z- 70. other technical requirements conforming to rdso str no. wx-23008 and inspection check sheet- wx-25002. [ warranty period : 30 months after the date of delivery ] ] , shackle lock and lock pin with split pin 4 dia. x25-st (with hole to suit 4dia. split pin)) to rdso drg no wd-85079-s-2, alt-27, item no 7 and 8. material of shackle lock cl-2 and lock pin cl-3 conforming to is: 2004-1991, reaffirmed:2018. split pin confor ming to is:549-2005, reaffirmed-2021. [ warranty period: 30 months after the date of delivery ] ]