supply of set of door latch assembly for sb , set of door latch assembly for sb & hb doors of three phase locomotives as per ref.no.1 to 7 of els/lgd drg.no.c/els/lgd/b.f/3/42. one set consisting of (1) base plate as per is:6603.ref.no.1. -01 no./set. (2) lock plate as per is:6603.ref.no.2.- 01 no./set. (3) support plate as per is:6603.ref.no.3.- 01 n o./set. (4) fixing screw as per is:1364/1367.ref.no.4.- 04 nos./set. (5) flat washer as per is:2016.ref.no.5 .- 04 nos./set. (6) spring washer as per is:3063.ref.no.6.- 04 nos./set. (7) hex.nut as per is:1364/1367.ref .no.7.- 04 nos./set. [ warranty period: 30 months after the date of delivery ] ]