1、Part Identifying Number (PIN) Code System Standard for B18 Fastener ProductsAN AMERICAN NATIONAL STANDARDASME B18.24-2015Revision of ASME B18.24-2004 (R2011)ASME B18.24-2015Revision of ASME B18.24-2004 (R2011)Part IdentifyingNumber (PIN) CodeSystem Standard forB18 Fastener ProductsAN AMERICAN NATION
2、AL STANDARDTwo Park Avenue New York, NY 10016 USADate of Issuance: November 20, 2015This Standard will be revised when the Society approves the issuance of a new edition.ASME issues written replies to inquiries concerning interpretations of technical aspectsof this Standard. Interpretations are publ
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12、 MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword viCommittee Roster . viiCorrespondence With the B18 Committee viii1 Introductory Notes. 12 General Guidance 13 PIN Code Structure. 2Tables1-1 Fastener Family and Type/Base PIN 42-1 ThreadType . 252-2 Thread and Point Options f
13、or Tapping Screws . 253-1 Inch Thread 253-2 Inch Size . 253-3 Metric Thread 263-4 Metric Size . 273-5 Miniature Screw Thread 283-6 Inch Tapping Screw Thread . 283-7 Metric Tapping Screw Thread . 293-8 Inch Hex Socket Head Shoulder Screw Size . 293-9 Metric Hex Socket Head Shoulder Screw Size . 293-1
14、0 Inch Spline Socket Set Screw Thread 293-11 Inch Trim Head Machine Screw Size 293-12 Inch Wood Screw Thread . 303-13 Inch Lag Screw Thread . 303-14 Inch Rivet Size Weight . 303-15 Inch Rivet Size Number 303-16 Inch Rivet Size 1 . 303-17 Inch Rivet Size/Length . 303-18 Inch Pin Size 1 . 313-19 Inch
15、Pin Size 2 . 313-20 Retaining Ring Size Number 313-21 Inch Retaining Ring Size . 333-22 Inch Washer Size 1 . 343-23 Inch Washer Size 2 . 353-24 Inch Washer Size 3 . 353-25 Inch Washer Size 4 . 363-26 Metric Washer Size 1 . 363-27 Metric Washer Size 2 . 373-28 Metric Key Size 1 373-29 Metric Key Size
16、 2 384-1 Inch Length/Other . 384-2 Metric Length/Other . 404-3 Inch Miniature Screw Length . 414-4 Insert Length . 424-5 Inch Pin Length 424-6 Inch Eyebolt Full Thread Length 425-1 Material and Treatment: ASTM Material Specifications 435-2 Material and Treatment: UNS Carbon and Alloy Steels 825-3 Ma
17、terial and Treatment: UNS Heat and Corrosion Resisting Steels . 88iii5-4 Material and Treatment: UNS Nonferrous Materials . 935-5 Material and Treatment: SAE Material Specifications 965-6 Material and Treatment: ISO Material Specifications . 975-7 Material and Treatment: IFI Material Specifications
18、985-8 Material and Treatment: B18.16.1M 985-9 Material and Treatment: B18.6.6 . 986-1 Plating, Coating, and Passivation: Plain, Unfinished . 996-2 Plating, Coating, and Passivation: ASTM Finish Specifications . 996-3 Plating, Coating, and Passivation: Government Finish Specifications . 1176-4 Platin
19、g, Coating, and Passivation: SAE Finish Specifications . 1176-5 Plating, Coating, and Passivation: ISO Finish Specifications 1187-1 Plain: No Additional Features 1207-2 Miscellaneous Features for Externally Threaded Fasteners . 1207-3 General Point Options 1207-4 Features for Metric Flange Screws 12
20、07-5 Features for Metric 12-Spline Screws 1207-6 Neck Options for Large Rivets 1207-7 Cotter Pin Type 1207-8 PinType . 1207-9 SEMs Washer Components . 1207-10 Wood Screw Thread Types 1207-11 Miscellaneous Features for Socket Head Cap Screws . 1217-12 Self-Locking Elements for Set Screws 1217-13 Thre
21、ad Class for Track Bolts and Nuts 1217-14 Alternate Points for Thumb and Wing Screws (ASME B18.6.8) . 121Nonmandatory AppendicesA B18.24.1, B18.24.2, and B18.24.3 PIN Succession Instructions . 123B B18.24.1, B18.24.2, and B18.24.3 PIN Succession Tables . 128C Part Identifying Number System for Bent
22、Bolts per ASME B18.31.5 172FiguresA-1 Instructions 124C-1 Part Identification Number (PIN) System for Bent Bolts . 173TablesB-1 Fastener Family 128B-2 Fastener Type: Externally Threaded . 128B-3 Fastener Type: Internally Threaded and Nonthreaded . 142B-4 Thread Series: Externally Threaded . 143B-5 T
23、hread Series: Internally Threaded 143B-6 Inch Size: Externally Threaded 143B-7 Inch Size: Internally Threaded 143B-8 Metric Size: Externally Threaded 144B-9 Metric Size: Internally Threaded 144B-10 Inch Miniature Screw Size 144B-11 Inch Length: Externally Threaded . 144B-12 Metric Length: Externally
24、 Threaded . 144B-13 Inch Miniature Screw Length . 145B-14 Length: Internally Threaded 145B-15B-133 Dimensions/Other Characteristics: Nonthreaded 145B-134 Material and Treatment A 160B-135 Material and Treatment B . 163B-136 Plating, Coating, and Passivation . 165B-137 Additional Features: Externally
25、 Threaded . 166B-138 Additional Features: Internally Threaded 166B-139 Additional Features: Nonthreaded 166B-140 Cross Reference: Table 2-2 Tapping Screw Point AB 166ivB-141 Cross Reference: Table 2-2 Tapping Screw Point B . 166B-142 Cross Reference: Table 2-2 Tapping Screw Point BF 166B-143 Cross R
26、eference: Table 2-2 Tapping Screw Point BP 167B-144 Cross Reference: Table 2-2 Tapping Screw Point BT 167B-145 Cross Reference: Table 2-2 Tapping Screw Point C . 167B-146 Cross Reference: Table 2-2 Tapping Screw Point D . 167B-147 Cross Reference: Table 2-2 Tapping Screw Point F . 167B-148 Cross Ref
27、erence: Table 2-2 Tapping Screw Point G . 167B-149 Cross Reference: Table 2-2 Tapping Screw Point T . 167B-150 Cross Reference: Table 2-2 Tapping Screw Point U . 167B-151 Bridge to Table 3-6 for AB, B, BF, BP, BT 167B-152 Bridge to Table 3-6 for C, D, F, G, T . 167B-153 Bridge to Table 3-7 for AB, B
28、, BF, BT 167B-154 Bridge to Table 3-7 for D, F, T 167B-155 Bridge to Table 3-10 167B-156 Bridge to Table 3-12 167B-157 Bridge to Table 3-13 167B-158 Cross Reference: Table 7-9 Washer Component 1 167B-159 Cross Reference: Table 7-9 Washer Component 2 167B-160 Cross Reference: Table 7-9 Washer Compone
29、nt 3 167B-161 Cross Reference: Table 7-9 Washer Component 4 167B-162 Cross Reference: Table 7-9 Washer Component 5 167B-163 Cross Reference: Table 7-9 Washer Component 6 167B-164 Cross Reference: Table 7-9 Washer Component 7 167B-165 Cross Reference: Table 7-9 Washer Component 8 167B-166 Cross Refer
30、ence: Table 7-9 Washer Component 9 168B-167 Cross Reference: Table 7-9 Washer Component 10 . 168B-168 Cross Reference: Table 7-9 Washer Component 11 . 168B-169 Cross Reference: Table 7-9 Washer Component 12 . 168B-170 Bridge to Table 3-11 168B-171 Bridge to Table 3-4 . 168B-172 Bridge to Table 7-10
31、168B-Index B18.24 Legacy Table References From B18.24.1, B18.24.2, and B18.24.3 168C-1 Materials for Bent Bolts . 174C-2 Finish Designations for Bent Bolts 175vFOREWORDA joint government and ASME B18 meeting was held November 4, 1977 at Defense IndustrialSupply Center in Philadelphia, Pennsylvania.
32、A planning group was established to eliminateroad blocks to the government acceptance and use of national voluntary standards. Designatedthe Ad Hoc Fastener Planning Group, the Groups first meeting was held February 2, 1978 atASTM Headquarters in Philadelphia. At the meeting, government appendices t
33、o ASME B18metric product standards were endorsed. In addition, an ANSI metric log was established topreventduplicateeffortsandprovidethelateststatusof18metricfastenerprojects.TheU.S.ArmyArmament Research Development and Engineering Center was tasked to provide governmentappendices for metric fastene
34、r standards on an as-needed basis.At the ASME B18 Standards Committee meeting on December 5, 1991, based on aB18 Subcommittee 24 suggestion, the B18 Standards Committee unanimously approved a motionthat Subcommittee 24 Industry/Government Liaison be reactivated and tasked by B18 to addressthe issue
35、of how to best handle needed changes to the various government appendices.At the Subcommittee 24 meeting, May 12, 1993 at ASME Headquarters in New York City, thepart identifying number (PIN) code system concept for B18 product standards was agreed to.The need was expressed that a PIN code system be
36、made available for all users, not just limitedto government users. This was based on the recognition that twenty-eight B18 metric and oneB18 inch (ANSI B18.2.1) standards contained government Appendices for Department of Defense(DOD) PIN acquisition usage and were not considered part of the B18 Stan
37、dard. Again, thepremise based on the aforementioned proposal was to provide a B18 code system for all userswithout exception.Based on the B18 Standards Committee mandate, a Subcommittee 24 Task Group was formedto develop B18.24.1 (externally threaded fasteners) first, then proceed with B18.24.2 (int
38、ernallythreaded B18 fasteners) and B18.24.3 (nonthreaded fasteners) standards.During the April 2003 B18 Subcommittee 24 and B18 Standards Committee meetings, it wasagreed to draft a new standard, ASME B18.24, Part Identifying Number (PIN) Code SystemStandard for B18 Fastener Products, to replace the
39、 existing ASME B18.24.1, B18.24.2, andB18.24.3 standards. This was based on users expressed need to reduce the 21-digit PIN code toa code with 18 digits, to accommodate the 18-digit maximum file name length constraint inherentwith widely used computer aided design (CAD) software platforms. ASME B18.
40、24-2004 wasapproved by the American National Standards Institute (ANSI) on April 16, 2004.Following approval by the ASME B18 Standards Committee and after public review,ASME B18.24a-2006 was approved by the American National Standards Institute on December 7,2006. The title of Table 1-1 was revised
41、along with the column head under “Feature.” Materialwas added under B18.2.6 and B18.9. “B18.16M” was revised to read “B18.16.3M.” “B18.27.6” wasrevised to read “B27.6.” “B18.27.7M” was revised to read “B27.7.” “B18.27.8M” was revised toread “B27.8.” Various changes were made throughout the document
42、to incorporate requiredchanges.In 2013, Subcommittee 24 of the B18 Standards Committee created a Task Group to review theB18.24 document against new standards published since 2004 and revisions to existing standards.Quite a few changes were integrated into the new version including the addition of s
43、everalcommonly used ISO callouts for material and plating and several metric standards that had notpreviously existed. Several ASTM documents for material and plating were added to the B18.24PIN system to make it more useful.This revision was approved by ANSI as an American National Standard on June
44、 1, 2015.viASME 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 OFFICERSJ. Greenslade, ChairD. S. George, Vice ChairW. H. King, Vice ChairC. J. Gomez,
45、 SecretarySTANDARDS COMMITTEE PERSONNELV. Cartina, Nylok, LLCL. Claus, Contributing Member, NNI Training and Consulting, Inc.D. A. Clever, Contributing Member, ConsultantA. P. Cockman, Ford Motor Co.C. A. D. de la Garza, TSP, Inc.D. S. George, Ramco SpecialtiesC. J. Gomez, The American Society of Me
46、chanical EngineersJ. Greenslade, Industrial Fasteners InstituteJ. J. Grey, Contributing Member, Fastener Consulting Services, Inc.A. Herskovitz, Contributing Member, ConsultantJ. C. Jennings, Contributing Member, Naval Surface Warfare CenterSUBCOMMITTEE 24 PIN CODE SYSTEM FOR B18 FASTENERSD. Korneff
47、el, Chair, Cadenas PARTsolutionsJ. Greenslade, Industrial Fasteners InstituteA. P. Cockman, Ford Motor Co.C. A. D. de la Garza, TSP, Inc.J. S. Foote, Trade Association Management, Inc.D. S. George, Ramco SpecialtiesB. Hasiuk, Defense Supply Center PhiladelphiaviiW. H. King, Fastenal Co.D. Korneffel,
48、 Contributing Member, Cadenas PARTsolutionsJ. F. McCarrick, Defense Supply Center PhiladelphiaM. D. Prasad, Contributing Member, GlobalM however, they shouldnot contain proprietary names or information.RequeststhatarenotinthisformatmayberewrittenintheappropriateformatbytheCommitteeprior to being ans
49、wered, 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 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 Committee regularly holds meetingsand/or telephone conferences that are open to the public. Pers
