supply of hex. head bolt complete m-24 x 90 with prevailing torque type nut m-24 & interlock lock washer m-24 for side buffer arrangement etc.hex. head bolt complete m-24 x 90 with prevailing torque type nut m-24 & interlock lock washer m-24 for side buffer arrangement etc.,hex. head bolt complete m-24 x 90 with prevailing torque type nut m-24 & in terlock lock washer m-24 for side buffer arrangement. drawing no. icf/std-2-2-009, al t [j], items 12,14 & 15. items 12 & 14. make/brand as per drawing with latest instruction fr om pus/rdso. hex head bolt m24x90 & prevailing torque type nut m24 of make/brand- tvs, tuff, dfl a nd unbrako only and interlock washer m24 of make/ type: disc-lock/ nord- lock/durlock or equivalent. [ w arranty period: 30 months after the date of delivery ] ]