tender for set of lead coated fasteners for intercell connectors for 500ah lead acid batteries conforming to isspec : 6848/1979 with amendments 1 to 3 consisting of : 1. hex head bolt m-8*35 to is 1363 -01 no 2. hex nutm-8 to is spec 1363 - 01 no 3. spring washer m-8 to is spec 3063 - 01 no 4. plain washer as per spec - 02nos .