1、AN AMERICAN NATIONAL STANDARDASME B18.31.5-2011Bent Bolts(Inch Series)ASME B18.31.5-2011Bent Bolts(Inch Series)AN AMERICAN NATIONAL STANDARDThree Park Avenue New York, NY 10016 USADate of Issuance: December 12, 2011This Standard will be revised when the Society approves the issuance of a new edition
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11、 10016-5990Copyright 2011 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster . vCorrespondence With the B18 Committee vi1 Introductory Notes . 12 General Data 2Figures1 Dimensions of J-Bolts, Offset Round Bend . 52 Dimensions of Hook
12、 Bolts, Square Bends 53 Dimensions of U-Bolts, Vee Bend . 54 Dimensions of Slant U-Bolts 5Tables1 Dimensions of U-Bolts, Round Bend 62 Dimensions of U-Bolts, Square Bends . 73 Dimensions of Eyebolts, Closed Anchor Ring 84 Dimensions of Eyebolts, Open Anchor Ring . 95 Dimensions of Hook Bolts, Right
13、Angle Bend . 106 Dimensions of Hook Bolts, Acute Angle Bend . 117 Dimensions of Round Bend Hook Bolts . 11Nonmandatory AppendixA Part Identifying Number System for Bent Bolts 13iiiFOREWORDThe ASME B18 Standards Committee for the Standardization of Bolts, Nuts, Rivets, Screws,Washers, and Similar Fas
14、teners (formerly American National Standards Committee B18) wasorganized in March 1922 as Sectional Committee B18 under the aegis of the American EngineeringStandards Committee (later the American Standards Association, then the United States ofAmerica Standards Institute, and, as of October 6, 1969
15、, the American National Standards Institute,Inc.) with the Society of Automotive Engineers and ASME as joint sponsors.In 1995 the SAE Ship Systems and Equipment Committee that was preparing fastener partstandards for the shipbuilding industry asked the ASME B18 Committee if there was an interestin d
16、eveloping dimensional standards for studs. At the December 1995 B18 meeting in Atlanta,Georgia, it was reported that a survey by ASME showed considerable interest in establishing asubcommittee to develop stud standards, and 11 representatives indicated their willingness toserve on the subcommittee.
17、Subcommittee (SC) 31, titled “Studs,” was established, and drafts ofSAE U.S. Customary and SI (Metric) stud standards were distributed for review.In April 2008, B18 SC 31 had completed work on ASME B18.31.2, which covered the studsfrom the Industrial Fasteners Institute (IFI) publication, IFI-136, S
18、tuds and Bent Bolts. At thatmeeting in Salt Lake City, Utah, B18 SC 31 approved a motion to create a bent bolt standardincorporating the bent bolts covered by IFI-136. IFI-136 was developed through the proceduresof the IFI. The standard for studs and bent bolts was originally published in Fastener S
19、tandards,5th edition, 1970.In 1986, these standards were updated, modestly revised, and reissued as IFI-136. In 2002,another revision was completed, and the standard was issued as a third revision.At the December 2008 meeting in Indian Rocks Beach, Florida, the scope of the new bent boltstandard was
20、 discussed at length with a decision made as to the thread forms, diameters, andbent bolt configurations that would be covered by the new standard.At the April 2009 meeting in Las Vegas, Nevada, B18 SC 31 and the B18 Board approvedchanging the SC name from “Studs” to “Studs, Lifting Eyes, and Bent B
21、olts” to cover the additionalstandards being handled by the Subcommittee. During the Las Vegas meeting, extensive timewas spent discussing and developing the part identification number (PIN) system to be used inthe new standard. At that meeting, the working group was asked to consult with the chair
22、ofSC 24, Industry/Government Liaison, about putting the PIN system into an appendix of B18.31.5.The chair of SC 24 agreed with the plan to keep the PIN system for bent bolts inside of the newbent bolt standard.A draft of this Standard was sent out as part of the agenda for the November 2009, SC31mee
23、ting in Las Vegas, Nevada. During that meeting, it was decided to indicate that unlessotherwise specified by the purchaser, the bolt material would be carbon steel. It also was decidedthat a survey of the B18 Committee would be taken regarding the inclusion of the PIN systemas part of the bent bolt
24、document. The survey was completed, with the majority agreeing thatthe PIN system would remain in the appendix, as ASME B18.24 could not accommodate themultiple dimensions of the bent bolts. The PIN system only applies to bent bolts with dimensionsidentified in the Standard. All bent bolts covered i
25、n the Standard can be identified by a modifiedtraditional method based on the method previously identified in IFI-136.A draft was balloted before the April 2010 meeting in Nashville, Tennessee, and several disap-provals were resolved at the meeting. Additional members volunteered for the Working Gro
26、upto determine and review tolerances for the dimensional tables. The draft was sent out for reviewto the four domestic manufacturers and two international manufacturers who had providedprimary information for the dimensional tables and tolerances.Further comments were reviewed during the April 2011
27、meeting in New Orleans, Louisiana.During that meeting it was decided that some configurations of bent bolts would be mentionedwithout dimensional tables being included. Recommendations for additional dimensions can beforwarded to ASME B18 SC 31 for consideration. A final draft was approved in July 2
28、011.This Standard was approved by the American National Standards Institute on November 1, 2011.ivASME B18 COMMITTEEStandardization of Bolts, Nuts, Rivets, Screws,Washers, and Similar Fasteners(The following is the roster of the Committee at the time of approval of this Standard.)STANDARDS COMMITTEE
29、 OFFICERSJ. Greenslade, ChairD. S. George, Vice ChairR. D. Strong, Vice ChairC. J. Gomez, SecretarySTANDARDS COMMITTEE PERSONNELV. Cartina, Autocraft IndustrialD. A. Clever, Contributing Member, ConsultantA. P. Cockman, Ford Motor Co.C. A. Dugal de la Garza, Texas Screw Products, Inc.D. S. George, R
30、amco SpecialtiesC. J. Gomez, The American Society of Mechanical EngineersJ. Greenslade, Industrial Fasteners InstituteJ. J. Grey, Contributing Member, Fastener Consulting Services, Inc.J. Hubbard, Leland-Powell Fasteners, Inc.J. Jennings, Contributing Member, Naval Surface Warfare Center Philadelphi
31、aSUBCOMMITTEE 31 STUDS, LIFTING EYES, AND BENT BOLTSW. K. Wilcox, Chair, ConsultantC. A. Dugal de la Garza, Vice Chair, Texas Screw Products, Inc.T. Anderson, Bay BoltJ. F. Braden, Fasteners UnlimitedD. A. Clever, ConsultantJ. Finnegan, Safety Socket LLCD. S. George, Ramco SpecialtiesJ. Greenslade,
32、Industrial Fasteners InstituteA. Herskovitz, ConsultantJ. Hubbard, Leland-Powell Fasteners, Inc.J. Jennings, Naval Surface Warfare Center PhiladelphiavW. H. King, Porteous Fastener Co.M. D. Prasad, Contributing Member, Global M however, they shouldnot contain proprietary names or information.Request
33、s that are not in this format may be rewritten in the appropriate format by the Committeeprior to being answered, which may inadvertently change the intent of the original request.ASME procedures provide for reconsideration of any interpretation when or if additionalinformation that might affect an
34、interpretation is available. Further, persons aggrieved by aninterpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not“approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.Attending Committee Meetings. The B18 Standards Comm
35、ittee regularly holds meetings, whichare open to the public. Persons wishing to attend any meeting should contact the Secretary ofthe B18 Standards Committee.viASME B18.31.5-2011BENT BOLTS (INCH SERIES)1 INTRODUCTORY NOTES1.1 Scope1.1.1 This Standard establishes general require-ments for parts class
36、ified as bent bolts. Dimensionalrequirements are provided in tables for U-bolts of dif-fering bends, eyebolts, hook bolts of differing bends,and J-bolts. General requirements are provided for offsetround bend, J-bolts, square bend hook bolts, vee bendU-bolts, and slant U-bolts.1.1.2 Two methods are
37、identified for designating(ordering) bent bolts covered by this Standard. For con-figurations covered by dimensional tables,Nonmandatory Appendix A provides a Part Identifica-tion Number (PIN) system that allows ordering the partsin several materials and finishes. For configurationswithout dimension
38、al requirements or of sizes not cov-ered in the tables, a standard system for identifying thedimensions, material, and finish is provided.1.1.3 The inclusion of dimensional data in thisStandard reflects generally available configurations. Itis not intended to imply that all of the products described
39、herein are stock production sizes, particularly in materi-als other than low carbon steel. Consumers should con-sult with manufacturers concerning lists of stockproduction sizes and materials.1.2 DimensionsAll dimensions in this Standard are in inches, unlessotherwise specified. When plating or coat
40、ing is speci-fied, the finished product dimensions apply before plat-ing or coating unless otherwise specified by thepurchaser.1.3 OptionsOptions, where specified, shall be at the discretion ofthe manufacturer, unless otherwise agreed upon by themanufacturer and the purchaser.1.4 TerminologyThe foll
41、owing terms used in this Standard are identi-fied in this Standard below or in para. 2.1. The definitionof other terms used in this Standard may be found inASME B18.12.1.4.1 L-hook bolt is also known as a hook bolt,right angle bend as defined in ASME B18.12.11.4.2 J-hook bolt is also known as a hook
42、 bolt,round bend as defined in ASME B18.12.1.4.3 Roof top vee bolt is also known as a U-bolt,vee bend as defined in ASME B18.12.1.4.4 U-bolt, slant bend requires a bend from thehigh point of one leg to the high point of the secondleg. The angle of bend and the height requirement foreach leg are dete
43、rmined by the purchaser. The bolt hasthreads on both ends of its shanks.1.5 Referenced StandardsUnless otherwise specified, the standards referencedshall be the most recent at the time of order placement.ASME B1.1, Unified Inch Screw Threads (UN andUNR Thread Form)ASME B1.3, Screw Thread Gaging Syst
44、ems forDimensional Acceptability Inch and Metric ScrewThreads (UN, UNR, UNJ, M, and MJ)ASME B18.12, Glossary of Terms for MechanicalFastenersASME B18.18, Quality Assurance for FastenersASME B36.10M, Welded and Seamless Wrought SteelPipePublisher: The American Society of MechanicalEngineers (ASME), T
45、hree Park Avenue, New York,NY 10016-5990; Order Department: 22 Law Drive, P.O.Box 2900, Fairfield, NJ 07007-2900 (www.asme.org)ASTM A193/A193M, Standard Specification forAlloy-Steel and Stainless Steel Bolting Materials forHigh Temperature or High Pressure Service and OtherSpecial Purpose Applicatio
46、nsASTM A307, Standard Specification for Carbon SteelBolts and Studs, 60,000 PSI Tensile StrengthASTM A320/A320M, Standard Specification forAlloy-Steel and Stainless Steel Bolting Materials forLow-Temperature ServiceASTM A675/A675M, Standard Specification for SteelBars, Carbon, Hot-Wrought, Special Q
47、uality,Mechanical PropertiesASTM B695, Coatings of Zinc Mechanically Depositedon Iron and SteelASTM F468, Standard Specification for NonferrousBolts, Hex Cap Screws, and Studs for General UseASTM F593, Standard Specification for Stainless SteelBolts, Hex Cap Screws, and StudsASME B18.31.5-2011ASTM F
48、1470, Standard Guide for Specified MechanicalProperties and Performance InspectionASTM F1554, Standard Specification for Anchor Bolts,Steel, 36, 55, and 105-ksi Yield StrengthASTM F1941, Specification for ElectrodepositedCoatings on Threaded Fasteners Unified Inch ScrewThreads (UN/UNR)ASTM F2329, Zi
49、nc Coating, Hot-Dip, Requirements forApplication to Carbon and Alloy Steel Bolts, Screws,Washers, Nuts, and Special Threaded FastenersPublisher: American Society for Testing and Materials(ASTM International), 100 Barr Harbor Drive, P.O. BoxC700, West Conshohocken, PA 19428-2959(www.astm.org)SAE J429, Mechanical and Material Requirements forExternally Threaded FastenersPublisher: Society of Automotive Engineers (SAEInternational), 400 Commonwealth Drive,Warrendale, PA 15096-0001 (www.sae.org)2 GENERAL DATA2.1 Bent BoltsThe bent bolts covered by this Standard include thoselisted
