1、AN AM E RICAN NAT IO NAL STANDARDPart Identifying Number(PIN)Code System Standard forB18 Fastener ProductsASME B18.24-2004(Supersedes ASME B18.24.1,B18.24.2,and B18.24.3)ASME B18.24-2004(Supersedes ASME B18.24.1,B18.24.2,and B18.24.3)Part IdentifyingNumber(PIN)Code SystemStandard for B18 FastenerPro
2、ductsCOMMERCIAL AND GOVERNMENT ENTITY(CAGE)CODE FOR ASME:05047Three Park Avenue New York,NY 10016AN AMERICAN NATIONAL STANDARDDate of Issuance:May 31,2005The 2005 edition of this Standard is being issued with an automatic addenda subscription service.Theuse of an addenda allows revisions made in res
3、ponse to public review comments or committee actionsto be published as necessary.The next edition of this Standard is scheduled for publication in 2010.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Interpretations are published on the ASME
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6、om 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 connection with any itemsmentioned in this docu
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9、cument issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The
10、American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.viiiCommittee Roster .ixCorrespondence With the B18 Committee .x1Introductory Notes.12General Guidance .13
11、PIN Code Structure .2Tables1-1Fastener Family and Type/Base PIN .32-1Thread Type .222-2Thread and Point Options for Tapping Screws .223-1Inch Thread.223-2Inch Size .223-3Metric Thread .233-4Metric Size .243-5Miniature Screw Thread .243-6Inch Tapping Screw Thread .253-7Metric Tapping Screw Thread .25
12、3-8Inch Hex Socket Head Shoulder Screw Size.253-9Metric Hex Socket Head Shoulder Screw Size .253-10Inch Spline Socket Set Screw Thread .263-11Inch Trim Head Machine Screw Size .263-12Inch Wood Screw Thread .263-13Inch Lag Screw Thread.263-14Inch Rivet Size Weight .263-15Inch Rivet Size Number .263-1
13、6Inch Rivet Size 1 .273-17Inch Rivet Size/Length.273-18Inch Pin Size 1 .273-19Inch Pin Size 2 .273-20Retaining Ring Size Number .273-21Inch Retaining Ring Size.293-22Inch Washer Size 1 .303-23Inch Washer Size 2 .303-24Inch Washer Size 3 .313-25Inch Washer Size 4 .313-26Metric Washer Size 1 .323-27Me
14、tric Washer Size 2 .323-28Metric Key Size 1 .323-29Metric Key Size 2 .324-1Inch Length/Other .324-2Metric Length/Other .344-3Inch Miniature Screw Length .354-4Insert Length.354-5Inch Pin Length.354-6Inch Eyebolt Overall Length.355-1Material and Treatment:ASTM Material Specifications.36iii5-2Material
15、 and Treatment:UNS Carbon and Alloy Steels .685-3Material and Treatment:UNS Heat and Corrosion Resisting Steel.735-4Material and Treatment:UNS Non-Ferrous Materials.785-5Material and Treatment:SAE Material Specifications .805-6Material and Treatment:ISO Material Specifications .815-7Material and Tre
16、atment:IFI Material Specifications .816-1Plating,Coating,and Passivation:Plain,Unfinished.826-2Plating,Coating,and Passivation:ASTM Finish Specifications.826-3Plating,Coating,and Passivation:Government Finish Specifications.926-4Plating,Coating,and Passivation:SAE Finish Specifications .937-1Plain:No Additional Features .947-2Misc.Features for Externally Threaded Fasteners.947-3General Point Options .947-4Features for Metric Flange Screws.947-5Features for Metric 12-Spline Screws.947-6Neck Optio