supply of set of fasteners.set of fasteners.,set of hex headed bolt m6x30 with spring washer for cut off angle cock of air brake wagons 1-as per rdso drg.no . wd:88123/s-01 item no .13& alt.no . 02 o r latest 2-each set consisting 04 nos each bolt with spring washer as per drg.no. as per rdso drg.no . wd-88 123/s-01 item no .13& alt [ warranty period: 30 months after the date of delivery ] ] , hex head bo lt m12x55 high tensile as per is:1364 part-1- 2002, ce-with property c lass-10.9 to is:1367 part-3-2002, coating as per mdts:057 [ warranty period: 30 months after the date of delivery ] ] , set of fastners for fittment of air spring assembly in demu coaches consisting of (1) hex so cket head cap screw to iso 4762-m20x50-10.9, is 2249, (2) prevailing torque type nut to iso 7040: m20:1 0,is:7002,(3) punched washer a22-is 2016 steel is:2016. fasteners shall be of tvs/unbrako/lps make onl y [ warranty period: 30 months after the date of delivery ] ] , m.s. hex head sgrew, size m6x15 mm, zinc plated conforming to is:1364 (pt:2). and property class 8.8 with zinc plated only. as per pl. no . 233379908 [ warranty period: 30 month s after the date of delivery ] ] , high tensile hexagonal head bolt with spring washer,plain washer and hexago nal nut with lock nut to size: m16x55mm length to is 1364/1992 (or latest) and property clas s 10.9. accepted make: tvs/unbrako/pfl/dfl/lps only [ warranty period: 30 months after the date of delivery ] ] , hex head bolt m16x120 high tensile as per is:1364 (part-2):2002, ce-with property class:10.9 to is:1367 (part-3)-2002, coating as per mdts:057 (rev-nil). [ warranty period: 30 mon ths after the date of delivery ] ] , csk head screw with hex socket m8x70 high tensile as per is:6761/2023, din7991, 12.9, coa ting as per mdts:057. [ warranty period: 30 months after the date of delivery ] ] , hex. head bolt m12x100 high tensile. material & specification: is:1364 (pt-1)/2002, or latest, ce: with property class: 10.9, to is:1367 (part-3) 200