ASME B18.5.2.1M-2006 pdf download.Metric Round Head Short Square Neck Bolts. General. ASME Standards are developed and maintained with the intent to nrpnsent the consensus of concerned interests. As such. users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings. Correspondence should be addressed to: Secretary. 818 Standards Committee The American Society of...