《ASME_B18.2.1-2016-六角方型美制螺栓螺钉必威体育精装版标准》.pdf

ASME B18.2.1-2010 [Revision of ASME B18.2.1-1996 (R2005)] Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series) A N A M E R I C A N N A T I O N A L S T A N D A R D INTENTIONALLY LEFT BLANK ASME B18.2.1-2010 [Revision of ASME B18.2.1-1996 (R2005)] Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series) A N A M E R I C A N N A T I O N A L S T A N D A R D Three Park Avenue • New York, NY • 10016 USA Date of Issuance: October 13, 2010 This Standard will be revised when the Society approves the issuance of a new edition. There will be no addenda issued to this edition. ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations are published on the ASME Web site under the Committee Pages at as they are issued. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in co