M-2OD90092750024329541D/Y)-25-30AMERICANNATIONALSTANDARDCarbide-TippedMasonryDrillsandBlanksforCarbide-TippedMasonryDrillsANSIB94.12-1977(REVISIONOFANSI894.12-19681SKREIARIATTHEAMERICANSOCIETYOFMECHANICALENGINEERSPUBLISHEDBYTHEAMERICANSOCIETYOFMECHANICALENGINEERSUnitedEngineeringCenterNewYork,N.Y.1O017345East47thStreetCopyrightASMEInternationalProvidedbyIHSunderlicensewithASMELicensee=UniversityofAlberta/5966844001,User=trert,rtyrtyrtyNotforResale,03/07/201523:46:29MSTNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,````,``,`,,`,,`,`,```,`,,,,`-`-`,,`,,`,`,,`---W90092750024330263DNopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepub1isher.CopyriqhtO1978byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllRightsReservedPrintedinU.S.A.CopyrightASMEInternationalProvidedbyIHSunderlicensewithASMELicensee=UniversityofAlberta/5966844001,User=trert,rtyrtyrtyNotforResale,03/07/201523:46:29MSTNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,````,``,`,,`,,`,`,```,`,,,,`-`-`,,`,,`,`,,`---90092750024L3LLTTFOREWORDThematerialcontainedinthisstandardwasdevelopedbytheStandardsCommitteeoftheCementedCarbideProducersAssociationafterathoroughinvestigationofthefactorsinvolvedinthefieldofcarbide-tippedmasonrydrillsandblanksforcarbide-tippedmasonrydrills.Itisbasedonsoundengineeringprac-ticeandreflectstherequirementsoftheindustry.Thecommitteedevelopedthreedraftsonthesubject,eachofwhichwasreviewedbyinterestedpartiesandrevisedtoincorporatethechangessuggested.ThefinaldraftwassubmittedtotheAmericanStandardsAssociation(laterchangedtoUSAStandardsInstitute)andapprovedasAmericanStandardundertheExistingStandardsMethodonJune22,1962,asB82.1.In1966arevisionwassubmittedtoandapprovedbyTCI,CarbideandOxideTools,ofUSAStandardsCommitteeB94,CuttingTools,Holders,DriversandBushings.ItwaslaterapprovedbytheUSAStandardsCommitteeB94andthesponsor.ThestandardwasapprovedbytheUSAStandardsinstituteandredesig-natedB94.12onMarch28,196...
