procurement of ms bolts with nut and plain washer of different sizes for ahp of 2x660 mw , sstpp , mppgcl , khandwa . , ms hexagonal headed bolt with nut and plain washer as per is-1363: 1992 grade 4 . 6 in the following sizes:- 1 ) bolt head should be as per is code mentioned above and grade 4 . 6 should be embossed on it . 2 ) only threaded nut is to be supplied , m 6x50 ( full thread ) , m 8x50 ( full thread ) , m 10x60 ( full thread ) , m 12x40 ( full thread ) , m 12x60 ( full thread ) , m 12x80 ( full thread ) , m 14x60 ( full thread ) , m 14x70 ( full thread ) , m 16x50 ( full thread ) , m 16x70 ( full thread ) , m 16x80 ( full thread ) , m 16x110 ( half thread ) , m 16x160 ( half thread ) , m 16x200 ( half thread ) , m 16x250 ( half thread ) , m 20x10 ( full thread ) , m 20x60 ( full thread ) , m 20x90 ( half thread ) , m 20x165 ( half thread ) , m 22x200 ( half thread )