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ASME_B18.6.2-2020.pdf

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1、AN AM E R IC AN NAT IO NAL STANDARDASME B18.6.2-2020Revision of ASME B18.6.2-1998(R2010)Square Head Set Screws and Slotted Headless Set Screws(Inch Series)ASME B18.6.2-2020Revision of ASME B18.6.21998(R2010)Square Head SetScrews and SlottedHeadless Set Screws(Inch Series)AN AMERICAN NATIONAL STANDAR

2、DxDate of Issuance:December 31,2020This Standard will be revised when the Society approves the issuance of a new edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard.Interpretations arepublishedontheCommitteewebpageandunderhttp:/go.asme.or

3、g/InterpsDatabase.PeriodicallycertainactionsoftheASMEB18 Committee may be published as Cases.Cases are published on the ASME website under the B18 Committee Page athttp:/go.asme.org/B18committee as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pa

4、ges to provide corrections toincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedon the date posted.The B18 Committee Page can be found at http:/go.asme.org/B18committee.There is an option available to automaticallyreceive an e-mail notificat

5、ion when errata are posted to a particular code or standard.This option can be found on theappropriate Committee Page after selecting“Errata”in the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.Thiscodeorstandardwasdevelopedunderproc

6、eduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunityto participate.The proposed codeorstandardwasmadeavailable forpublic reviewandcommentthatprovides

7、anopportunityfor 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 conn

8、ection with any items mentioned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringe

9、ment of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this doc

10、ument issued in accordance with the established ASME proceduresand 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 A

11、merican Society of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2020 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B18 Committee.vi1Introduction.12General Data for Square Head Set

12、Screws.13General Data for Slotted Headless Set Screws.5Nonmandatory AppendicesAFormulas for Dimensions.8BWrench Openings for Square Head Set Screws.9Tables2.2.2-1Length Tolerances:Square Head Set Screws.22.5.1-1Dimensions of Square Head Set Screws.33.1.1-1Dimensions of Slotted Headless Set Screws.63

13、.2.2-1Length Tolerances:Slotted Headless Set Screws.7A-1Square Head Set Screws.8B-1Wrench Openings for Square Head Set Screws.9iiiFOREWORDAmericanNationalStandardsCommitteeB18forthestandardizationofbolts,screws,nuts,rivets,andsimilarfastenerswasorganizedinMarch1922,asSectionalCommitteeB18undertheAme

14、ricanEngineeringStandardsCommittee,1withtheSocietyofAutomotiveEngineersandTheAmericanSocietyofMechanicalEngineersasjointsponsors.Subcommittee32was subsequently established and chargedwith the responsibilityfor technical content ofstandards covering slottedand recessed head screws.In the years follow

15、ing the issuance of this document,the need for standards more comprehensive than head config-urationsbecameapparent.AtameetingheldonApril14,1942,Subcommittee32wasreorganizedandexpanded,andthefollowing operating scope was established.The scope of Subcommittee 32shall consist of the development and pr

16、omulgation of American Standards embracingscrew products variously known as machine screws,wood screws,tapping screws,slotted head cap screws,slottedheadless set screws,and machine screw nuts.The standards shall comprise complete product standards covering alldimensions and tolerances required for the specification and production of the products.Details shall include suchboundarydimensionsasnutwidthandthickness;screwheaddimensions;slotandrecessdimensions;bodydimensions;thread classification or t

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