materials supply for various individual works under mgnregs desamangalam gp , stone for masonry work , portland cement , coarse sand ( zone iii ) , stone aggregate ( single size ) :20 mm nominal size , stone aggregate ( single size ) : 10 mm nominal size , stone aggregate ( single size ) : 40 mm nominal size , twisted steel / deformed bars , solid blocks of size 30x20x15cm , fine sand ( zone iv ) , mild steel tubes hot finished welded type , red oxide zinc chromate primer , galvanised steel j or l hooks 8 mm dia , bitumen washer , g.i. plain washer thick , precoated aluminium trafford sheet 0.450mm thick , galvanised wire mesh of average width of aperture 1.4 and nominal dia. of wire 0.63 mm , wire nails , aracanut post , polythene water storage tank with cover , pvc pipe 63 mm outer dia . 6kgf / cm2 , pvc elbow 63 mm dia , pvc bend 63 mm dia , pvc tee 63x63x63 mm dia