1、AN AMERICAN NATIONAL STANDARD ASME B18.3-2012Revision of ASME B18.3-2003(R2008)Socket Cap,Shoulder,Set Screws,and Hex Keys(Inch Series)Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright ASM
2、E International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ASME B18.3-2012Revision of ASME B18.3-2003(R2008)Socket Cap,Shoulder,SetScrews,andHex Keys(Inch Series)AN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 1
3、0016 USACopyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance:April 24,2013This Standard will be revised when the Society approves the issuance of a new edition.ASME issues written repl
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13、 rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword.ivCommittee Roster.viCorrespondence With the B18 Committee.vii1Introductory Notes.12General Data.2
14、Figure1Cup Point Variations.37Tables1Dimensions of Hexagon Socket Head Cap Screws.32Dimensions of Under Head Fillets for Socket Head Cap Screws Threadedto the Head.63Dimensions of Under Head Fillets for Socket Head Cap Screws With anUnthreaded Length of Body Diameter.74Body and Grip Lengths for Sock
15、et Head Cap Screws.85Lengths Beyond Sizes in Table 4.126Shank Straightness for Socket Head Cap Screws.137Dimensions of Drilled Hexagon Socket Head Cap Screws.148Dimensions of Hexagon Socket Flat Countersunk HeadCap Screws.169Body and Grip Lengths for Socket Flat Countersunk Head Cap Screws.1910Lengt
16、hs Beyond Sizes in Table 9.2211Dimensions of Hexagon Socket Button Head Cap Screws.2312Dimensions of Low Head Hexagon Socket Cap Screws.2613Dimensions of Hexagon Socket Head Shoulder Screws.2814Dimensions of Hexagon Socket Set Screws.3115Hexagon Key Engagements for Short Length Set Screws.3516Dimensions of Optional Cup Points.3617Dimensions of Hexagon Keys and Bits.3818Dimensions of Hexagon Sockets.40Mandatory AppendicesIGages and Gaging for Hexagon Sockets.41IIProtrusion Gaging of Flat Counters
