Bolts, nuts and washers shall conform as appropriate to IS 1363 (Parts 1 to 3), IS 1364 (Parts 1 to 5), IS 1367 (Parts 1 to 20), IS 3640, IS 3757, IS 4000, IS 5369, IS 5370, IS 5372, IS 5374, IS 5624, IS 6610, IS 6623, IS 6639, and IS 6649. The recommendations in IS 4000 shall be followed.
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