tender for set of square head screw as per is:1367 /2002. (1) m6x35 with one spring washer to is:3063, andone flat washer to is: 2016 and 2 nuts to is: 1367, part iii, thread length of screw is 25mm. head is 10mm x10mm, thickness 3.8mm : 1 no/set (2). m6x25 with one spring washer to is: 3063 ,one flat washer tor is: 2016,02 nuts to is: 1367. thread length of screw should 15mm. head is 10mmx10mm, with thickness 3.8mm.- 1 no/set. (grade 8.8) all item should be cadmium coated.