1、ASME B18.8.100M-2000SPRING PINS:COILED TYPE,SPRING PINS:SLOTTED,MACHINE DOWEL PINS:HARDENED GROUND,ANDGROOVED PINS(METRIC SERIES)Incorporating ASME B18.8.3M,B18.8.4M,B18.8.5M,and B18.8.9MA N A M E R I C A N N A T I O N A LS T A N D A R DASME B18.8.100M-2000SPRING PINS:COILED TYPE,SPRING PINS:SLOTTED
2、,MACHINE DOWEL PINS:HARDENED GROUND,ANDGROOVED PINS(METRIC SERIES)Incorporating ASME B18.8.3M,B18.8.4M,B18.8.5M,and B18.8.9MA N A M E R I C A N N A T I O N A LS T A N D A R DIntentionally left blank AN AMERICAN NA TIONALST ANDARDSPRING PINS:COILED TYPE,SPRING PINS:SLOTTED,MACHINE DOWEL PINS:HARDENED
3、 GROUND,ANDGROOVED PINS(METRIC SERIES)Incorporating ASME B18.8.3M,B18.8.4M,B18.8.5M,and B18.8.9MASME B18.8.100M-2000Date of Issuance:May 10,2001The 2000 edition of this Standard is being issued with an automatic addendasubscription service.The use of an addenda allows revisions made inresponse to pu
4、blic review comments or committee actions to be publishedas necessary.The next edition of this Standard is scheduled for publicationin 2003.ASME issues written replies to inquiries concerning interpretations oftechnical aspects of this Standard.The interpretations will be included withthe above adde
5、nda service.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 forAmerican National Standards.The Standards Committee that approved the code or standardwas balanced to assure that in
6、dividuals from competent and concerned interests have had anopportunity to participate.The proposed code or standard was made available for public reviewand comment that provides an opportunity for additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does n
7、ot“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 inconnection withany itemsmentioned inthis document,and doesnot undertaketo insureanyoneutilizing a standardagainst liability
8、for infringementof any applicable letterspatent,nor assumesany such liability.Users of a code or standard are expressly advised that determination of thevalidity of any such patent rights,and the risk of infringement of such rights,is entirely theirown responsibility.Participation by federal agency
9、representative(s)or person(s)affiliated with industry is not tobe interpreted as government or industry endorsement of this code or standard.ASMEacceptsresponsibilityforonlythoseinterpretationsissuedinaccordancewithgoverningASME procedures and policies which preclude the issuance of interpretations
10、by individualvolunteers.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 American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2001 byTHE AMERICAN SOCIET
11、Y OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.FOREWORDThe need for a standard covering machine pins was recognized by industry as far backas March,1926,when the Sectional Committee on the Standardization of Machine Pinswas organized under the procedure of the American Standards Associ
12、ation(later the UnitedStates of America Standards Institute and as of October 6,1969,the American NationalStandards Institute,Inc.),with the Society of Automotive Engineers and the AmericanSociety of Mechanical Engineers as joint sponsors.For the next year or two,an effort was made via correspondanc
13、e to develop a basis onwhich a standard for straight,taper,split,and dowel pins might be established.Thiscorrespondence developed a distinct difference of opinion on the part of the manufacturersand users of taper machine pins,which fact seemed to discourage the members of thecommittee from attempti
14、ng standardization on any of the types of pins within its scope.The sponsor organizations made frequent efforts to revive this project through letters andthe distribution of technical literature on this general subject,without avail.In December,1941,in its periodic review of standards projects for w
15、hich the Societyis sponsor,the ASME Standardization Committee decided that there was little hope forreviving this project and voted,subject to acceptance by the sponsors,to suggest to theASA the transfer of this project to Sectional Commitee B5 on the Standardization of SmallTools and Machine Tool E
16、lements.The sponsors agreed and on July 7,1942,the ASAsanctioned this action and Sectional Committee B43 was discharged and the project wasofficially transferred to Sectional Committee B5.At its meeting in December,1942,Sectional Committee B5 voted to enlarge its scopeto include machine pins.Technical Committee No.23 was subsequently established andcharged with the responsibility for technical content of standards covering machine pins.This group held its first meeting on November 30,1943,at whi
