INTERNATIONAL STANDARD ISO 3161 Third edition 1999-12-01 Aerospace — UNJ threads — General requirements and limit dimensions Aéronautique et espace — Filetage UNJ — Exigences générales et dimensions limites Reference number ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 Not for Resale ISO 3161:1999(E) PDF disclaimer This PDF file may contain embedded typefaces In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy The ISO Central Secretariat accepts no liability in this area Adobe is a trademark of Adobe Systems Incorporated Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing Every care has been taken to ensure that the file is suitable for use by ISO member bodies In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below © ISO 1999 All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester `,,```,,,,````-`-`,,`,,`,`,,` - ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work of preparing International Standards is normally carried out through ISO technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights ISO shall not be held responsible for identifying any or all such patent rights International Standard ISO 3161 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems `,,```,,,,````-`-`,,`,,`,`,,` - This third edition cancels and replaces the second edition (ISO 3161:1996), which has been technically revised iii © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO 3161:1999(E) Aerospace — UNJ threads — General requirements and limit dimensions Scope This International Standard specifies the general requirements and limit dimensions of inch series UNJ threads with controlled root radius for aerospace construction It determines the basic triangular profile for this type of thread and gives a system for designating the diameter and number of threads per inch combinations For all diameters 0,060 in (1,524 mm) to 6,000 in (152,4 mm), it offers in the form of tables the basic dimensions and tolerances for a selection of diameter and number of threads per inch combinations It also provides the method of calculation for the dimensions and tolerances for any diameter and number of threads per inch combination not given in the tables, including threads with a diameter in excess of 6,000 in Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard For dated references, subsequent amendments to, or revisions of, any of these publications not apply However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below For undated references, the latest edition of the normative document referred to applies Members of ISO and IEC maintain registers of currently valid International Standards ISO 15872:—1 , Aerospace — UNJ threads — Gauging Term and definition For the purposes of this International Standard, the following term and definition apply 3.1 basic profile in an axial plan, the theoretical profile corresponding to the basic dimensions See Figure Basic profile 4.1 Symbols See Figure 1 To be published `,,```,,,,````-`-`,,`,,`,`,,` - © ISO 1999 –forAll rights reserved Copyright International Organization Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) 4.2 Basic profile dimensions See Figure and Table Values given in Table have been calculated according to the following formulae: P= n n= P H 0,866 025 P 0,866 025 P n 0,487 14 H = 0,487 14 P = 16 n 0,324 76 H = 0,324 76 P = n 0,270 63 H = 0,270 63 P = 16 n H 0,108 25 = 0,108 25 P = n 4.3 Basic dimensions of thread Values given in Table have been calculated according to the following formulae: FG HIJ D 0,649 519P D 0,649 519 H K n 0,649 519 F I d d G H J d 0,649 519 P d H K n F HIJ D 0,974 28P D 0,974 28 D D G2 H 16 K n F HIJ d 0,974 28P d 0,974 28 d d G2 H 16 K n D2 D 1 The tolerances shall be applied to the basic profile `,,```,,,,````-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) where a D is the basic major diameter of internal thread D2 is the basic pitch diameter of internal thread D1 is the basic minor diameter of internal thread d is the basic major diameter of external thread d2 is the basic pitch diameter of external thread d1 is the basic minor diameter of external thread H is the height of fundamental triangle P is the pitch n is the number of threads per inch Axis of thread Figure — Basic profile 5.1 Series of threads General This International Standard includes various series of threads, i.e groups of diameter and number of threads per inch combinations distinguished from each other by the number of threads per inch associated with any given thread diameter These series of threads are given in Table 5.2 Diameters Columns and of Table give the primary and secondary series nominal sizes which satisfy current requirements `,,```,,,,````-`-`,,`,,`,`,,` - © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) 5.3 Number of threads per inch (n) 5.3.1 General Columns to (inclusive) of Table give the numbers of threads per inch which are recommended to be associated with the diameters in columns and These columns of the numbers of threads per inch are divided into two groups: ¾ series with increasing (progressive) pitches: columns 3, and 5; ¾ constant (uniform) pitch series: columns 6, 7, and 5.3.2 Series with increasing (progressive) pitches There are three series of increasing pitches They are headed "Coarse pitch", "Fine pitch" and "Extra fine pitch" in accordance with current practice These terms indicate the relative pitches of the three series for each given thread diameter and not imply a difference in quality between the series 5.3.3 Constant (uniform) pitch series In addition to these three series of increasing pitches, Table includes details of constant pitch series which have been selected from the range of threads per inch to 20 threads per inch Each of these series is limited to an appropriate range of diameters 5.4 Threads outside selection The threads specified in 5.3.2 and 5.3.3 and indicated in Table meet most requirements If other diameter and number of threads per inch combinations or threads larger than 6,000 in in diameter are required, then these shall be calculated using the formulae in 6.3.2 6.1 Tolerances Length of thread engagement used for calculating the pitch diameter tolerances The length of thread engagement (Le) (see Figure 2) used in this International Standard is equal to ¾ the basic major diameter for the series UNJC, UNJF and UNJ This is applicable for actual lengths of engagement between 1,0D and 1,5D; ¾ 9P for the series UNJEF, 12 UNJ, 16 UNJ, 20 UNJ and all UNJS This is applicable for actual lengths of engagement between 5P and 15P For applications with lengths of engagement not within the above limits, the tolerances on the pitch diameter shall be calculated according to the calculation formulae for Td2 and TD2, using the design length of engagement as Le `,,```,,,,````-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) Figure — Length of engagement 6.2 Position of tolerances 6.2.1 General The tolerances are positive (+) for the internal threads and negative (–) for the external threads (that is, the tolerances are applied in the direction of minimum material) 6.2.2 Internal thread See Figure a Basic UNJ profile Figure — Internal thread tolerances `,,```,,,,````-`-`,,`,,`,`,,` - © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) 6.2.3 External thread See Figure a Basic UNJ profile b d3 is the external thread profile minor diameter Figure — External thread tolerances 6.3 Values of tolerances for profile dimensions and tolerances of the profile form 6.3.1 General Values indicated in Tables 4, and have been calculated according to the formulae given in 6.3.2 and are based on the length of engagement equal to that shown in 6.1, where `,,```,,,,````-`-`,,`,,`,`,,` - = is the basic half-angle at the base of the thread side, i.e 30°; = is the maximum permissible variation of the half-angle; TD is the internal thread basic major diameter tolerance; TD1 is the internal thread basic minor diameter tolerance; TD2 and Td2 are the basic pitch diameter tolerances; Td is the external thread basic major diameter tolerance; Td1 is the external thread basic minor diameter tolerance; Td3 is the external thread profile minor diameter tolerance; P is the maximum permissible pitch variation of external or internal threads; Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - 28 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - 29 © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) Table — Maximum permissible deviations on pitch (lead) and half flank angle (1) (2) (4) n symbol (5) (6) (7) (8) External thread Series Nominal size (3) 0,4Td2 ,P (9) (10) (11) Internal thread ,= 0,4TD2 ° ' ,P ,= ° ' 0,060 0,073 0,073 0,086 0,086 80 64 72 56 64 UNJF UNJC UNJF UNJC UNJF 0,000 52 0,000 60 0,000 56 0,000 64 0,000 60 0,000 30 0,000 35 0,000 32 0,000 37 0,000 35 1 1 35 28 32 22 28 0,000 68 0,000 76 0,000 76 0,000 84 0,000 80 0,000 39 0,000 44 0,000 44 0,000 48 0,000 46 2 1 51 48 57 0,099 0,099 0,112 0,112 0,125 48 56 40 48 40 UNJC UNJF UNJC UNJF UNJC 0,000 68 0,000 64 0,000 76 0,000 72 0,000 76 0,000 39 0,000 37 0,000 44 0,000 42 0,000 44 1 1 15 22 10 19 10 0,000 88 0,000 84 0,000 96 0,000 92 0,001 00 0,000 51 0,000 48 0,000 55 0,000 53 0,000 58 1 1 37 48 28 41 32 0,125 0,138 0,138 0,164 0,164 44 32 40 32 36 UNJF UNJC UNJF UNJC UNJF 0,000 76 0,000 84 0,000 80 0,000 88 0,000 84 0,000 44 0,000 48 0,000 46 0,000 51 0,000 48 1 1 17 13 0,000 96 0,001 08 0,001 00 0,001 12 0,001 08 0,000 55 0,000 62 0,000 58 0,000 65 0,000 62 1 1 37 19 32 22 29 0,190 0,190 0,216 0,216 0,216 24 32 24 28 32 UNJC UNJF UNJC UNJF UNJEF 0,001 00 0,000 92 0,001 04 0,000 96 0,000 96 0,000 58 0,000 53 0,000 60 0,000 55 0,000 55 1 55 57 10 0,001 28 0,001 16 0,001 32 0,001 24 0,001 24 0,000 74 0,000 67 0,000 76 0,000 72 0,000 72 1 1 10 25 13 20 31 0,250 0,250 0,250 0,312 0,312 20 28 32 18 20 UNJC UNJF UNJEF UNJC UNJ 0,001 12 0,001 00 0,000 96 0,001 20 0,001 20 0,000 65 0,000 58 0,000 55 0,000 69 0,000 69 1 0 51 10 50 55 0,001 44 0,001 28 0,001 24 0,001 56 0,001 56 0,000 83 0,000 74 0,000 72 0,000 90 0,000 90 1 1 22 31 11 0,312 0,312 0,375 0,375 0,375 24 32 16 20 24 UNJF UNJEF UNJC UNJ UNJF 0,001 08 0,000 96 0,001 32 0,001 24 0,001 16 0,000 62 0,000 55 0,000 76 0,000 72 0,000 67 0 59 10 48 57 0,001 44 0,001 24 0,001 72 0,001 60 0,001 48 0,000 83 0,000 72 0,000 99 0,000 92 0,000 85 1 1 19 31 13 21 0,375 0,437 0,437 0,437 0,437 32 14 16 20 28 UNJEF UNJC UNJ UNJF UNJEF 0,001 00 0,001 40 0,001 36 0,001 24 0,001 08 0,000 58 0,000 81 0,000 79 0,000 72 0,000 62 0 13 45 50 57 0,001 32 0,001 84 0,001 80 0,001 64 0,001 40 0,000 76 0,001 06 0,001 04 0,000 95 0,000 81 1 1 37 59 15 30 0,500 0,500 0,500 0,500 0,562 13 16 20 28 12 UNJC UNJ UNJF UNJEF UNJC 0,001 48 0,001 40 0,001 28 0,001 12 0,001 56 0,000 85 0,000 81 0,000 74 0,000 65 0,000 90 0 44 51 59 12 43 0,001 92 0,001 84 0,001 68 0,001 44 0,002 04 0,001 11 0,001 06 0,000 97 0,000 83 0,001 18 1 57 17 32 56 `,,```,,,,````-`-`,,`,,`,`,,` - 30 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) Table (continued) (2) (3) (4) (6) (7) (8) External thread Series Nominal (5) (9) (10) (11) Internal thread size n symbol 0,4Td2 ,P ° ' 0,562 0,562 0,562 0,562 0,625 16 18 20 24 11 UNJ UNJF UNJ UNJEF UNJC 0,001 40 0,001 36 0,001 28 0,001 16 0,001 64 0,000 81 0,000 79 0,000 74 0,000 67 0,000 95 0 0,625 0,625 0,625 0,625 0,625 12 16 18 20 24 UNJ UNJ UNJF UNJ UNJEF 0,001 64 0,001 44 0,001 40 0,001 28 0,001 20 0,000 95 0,000 83 0,000 81 0,000 74 0,000 69 0,687 0,687 0,687 0,687 0,750 12 16 24 20 10 UNJ UNJ UNJEF UNJ UNJC 0,001 64 0,001 44 0,001 20 0,001 28 0,001 76 0,750 0,750 0,750 0,812 0,812 12 16 20 12 16 UNJ UNJF UNJEF UNJ UNJ 0,812 0,875 0,875 0,875 0,875 20 12 14 16 0,875 0,937 0,937 0,937 1,000 ,= 0,4TD2 ,P ° ' 51 56 59 41 0,001 84 0,001 76 0,001 64 0,001 52 0,002 16 0,001 06 0,001 02 0,000 95 0,000 88 0,001 25 1 1 13 15 24 54 0 0 45 53 58 59 0,002 12 0,001 84 0,001 80 0,001 68 0,001 56 0,001 22 0,001 06 0,001 04 0,000 97 0,000 90 1 1 58 14 17 26 0,000 95 0,000 83 0,000 69 0,000 74 0,001 02 0 0 45 53 59 40 0,002 12 0,001 84 0,001 56 0,001 68 0,002 28 0,001 22 0,001 06 0,000 90 0,000 97 0,001 32 1 58 26 17 52 0,001 64 0,001 52 0,001 32 0,001 64 0,001 44 0,000 95 0,000 88 0,000 76 0,000 95 0,000 83 0 0 45 56 45 53 0,002 16 0,001 96 0,001 72 0,002 16 0,001 88 0,001 25 0,001 13 0,000 99 0,001 25 0,001 09 1 59 12 19 59 UNJEF UNJC UNJ UNJF UNJ 0,001 32 0,001 88 0,001 64 0,001 64 0,001 44 0,000 76 0,001 09 0,000 95 0,000 95 0,000 83 0 0 39 45 53 53 0,001 72 0,002 44 0,002 16 0,002 12 0,001 88 0,000 99 0,001 41 0,001 25 0,001 22 0,001 09 0 1 19 50 59 20 12 16 20 UNJEF UNJ UNJ UNJEF UNJC 0,001 32 0,001 68 0,001 48 0,001 36 0,002 04 0,000 76 0,000 97 0,000 85 0,000 79 0,001 18 0 0 46 54 37 0,001 72 0,002 20 0,001 96 0,001 76 0,002 64 0,000 99 0,001 27 0,001 13 0,001 02 0,001 52 1 1 19 12 21 48 1,000 1,000 1,000 1,062 1,062 12 16 20 12 UNJF UNJ UNJEF UNJ UNJ 0,001 76 0,001 48 0,001 36 0,002 04 0,001 68 0,001 02 0,000 85 0,000 79 0,001 18 0,000 97 0 0 48 54 37 46 0,002 28 0,001 96 0,001 76 0,002 68 0,002 20 0,001 32 0,001 13 0,001 02 0,001 55 0,001 27 1 1 12 21 49 1,062 1,062 1,062 1,125 1,125 16 18 20 UNJ UNJEF UNJ UNJC UNJ 0,001 48 0,001 44 0,001 36 0,002 16 0,002 04 0,000 85 0,000 83 0,000 79 0,001 25 0,001 18 0 0 54 59 35 37 0,001 96 0,001 84 0,001 76 0,002 84 0,002 68 0,001 13 0,001 06 0,001 02 0,001 64 0,001 55 1 0 12 16 21 46 49 31 © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS ,= `,,```,,,,````-`-`,,`,,`,`,,` - (1) Not for Resale ISO 3161:1999(E) Table (continued) (1) (2) (3) (4) (6) (7) (8) External thread Series Nominal (5) (9) (10) (11) Internal thread size n symbol 0,4Td2 ,P ° ' 1,125 1,125 1,125 1,125 1,187 12 16 18 20 UNJF UNJ UNJEF UNJ UNJ 0,001 80 0,001 48 0,001 44 0,001 36 0,002 08 0,001 04 0,000 85 0,000 83 0,000 79 0,001 20 0 1,187 1,187 1,187 1,187 1,250 12 16 18 20 UNJ UNJ UNJEF UNJ UNJC 0,001 72 0,001 52 0,001 44 0,001 40 0,002 20 0,000 99 0,000 88 0,000 83 0,000 81 0,001 27 1,250 1,250 1,250 1,250 1,250 12 16 18 20 UNJ UNJF UNJ UNJEF UNJ 0,002 12 0,001 84 0,001 52 0,001 44 0,001 40 1,312 1,312 1,312 1,312 1,312 12 16 18 20 UNJ UNJ UNJ UNJEF UNJ 1,375 1,375 1,375 1,375 1,375 12 16 18 1,375 1,437 1,437 1,437 1,437 ,= 0,4TD2 ,P ,= ° ' 50 54 59 38 0,002 36 0,001 96 0,001 84 0,001 76 0,002 72 0,001 36 0,001 13 0,001 06 0,001 02 0,001 57 1 1 12 16 21 50 0 47 56 59 35 0,002 24 0,002 00 0,001 88 0,001 80 0,002 88 0,001 29 0,001 15 0,001 09 0,001 04 0,001 66 1 1 13 18 22 46 0,001 22 0,001 06 0,000 88 0,000 83 0,000 81 0 0 39 51 56 59 0,002 76 0,002 40 0,002 00 0,001 88 0,001 80 0,001 59 0,001 39 0,001 15 0,001 09 0,001 04 1 1 51 13 18 22 0,002 12 0,001 72 0,001 52 0,001 44 0,001 40 0,001 22 0,000 99 0,000 88 0,000 83 0,000 81 0 0 39 47 56 59 0,002 76 0,002 24 0,002 00 0,001 88 0,001 80 0,001 59 0,001 29 0,001 15 0,001 09 0,001 04 1 1 51 13 18 22 UNJC UNJ UNJF UNJ UNJEF 0,002 40 0,002 16 0,001 88 0,001 52 0,001 44 0,001 39 0,001 25 0,001 09 0,000 88 0,000 83 0 0 33 40 52 56 59 0,003 12 0,002 80 0,002 44 0,002 00 0,001 88 0,001 80 0,001 62 0,001 41 0,001 15 0,001 09 0 1 43 51 13 18 20 12 16 18 UNJ UNJ UNJ UNJ UNJEF 0,001 40 0,002 16 0,001 76 0,001 56 0,001 48 0,000 81 0,001 25 0,001 02 0,000 90 0,000 85 0 40 48 57 0,001 80 0,002 84 0,002 28 0,002 04 0,001 92 0,001 04 0,001 64 0,001 32 0,001 18 0,001 11 1 1 22 52 15 19 1,437 1,500 1,500 1,500 1,500 20 12 16 UNJ UNJC UNJ UNJF UNJ 0,001 44 0,002 44 0,002 20 0,001 88 0,001 56 0,000 83 0,001 41 0,001 27 0,001 09 0,000 90 0 0 34 40 52 57 0,001 84 0,003 16 0,002 84 0,002 52 0,002 04 0,001 06 0,001 82 0,001 64 0,001 45 0,001 18 0 1 24 43 52 15 1,500 1,500 1,562 1,562 1,562 18 20 12 16 UNJEF UNJ UNJ UNJ UNJ 0,001 48 0,001 44 0,002 20 0,001 76 0,001 56 0,000 85 0,000 83 0,001 27 0,001 02 0,000 90 1 0 40 48 57 0,001 92 0,001 84 0,002 88 0,002 28 0,002 04 0,001 11 0,001 06 0,001 66 0,001 32 0,001 18 1 1 19 24 53 15 `,,```,,,,````-`-`,,`,,`,`,,` - 32 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) Table (continued) (1) (2) (3) (4) (6) (7) (8) External thread Series Nominal (5) (9) (10) (11) Internal thread size n symbol 0,4Td2 ,P ° ' 1,562 1,562 1,625 1,625 1,625 18 20 12 16 UNJEF UNJ UNJ UNJ UNJ 0,001 48 0,001 44 0,002 24 0,001 76 0,001 56 0,000 85 0,000 83 0,001 29 0,001 02 0,000 90 1 0 1,625 1,625 1,687 1,687 1,687 18 20 12 16 UNJEF UNJ UNJ UNJ UNJ 0,001 48 0,001 44 0,002 24 0,001 80 0,001 60 0,000 85 0,000 83 0,001 29 0,001 04 0,000 92 1,687 1,687 1,750 1,750 1,750 18 20 12 UNJEF UNJ UNJC UNJ UNJ 0,001 52 0,001 44 0,002 68 0,002 28 0,001 80 1,750 1,750 1,812 1,812 1,812 16 20 12 16 UNJ UNJ UNJ UNJ UNJ 1,812 1,875 1,875 1,875 1,875 20 12 16 20 1,937 1,937 1,937 1,937 2,000 12 16 20 4,5 2,000 2,000 2,000 2,000 2,125 12 16 20 2,125 2,125 2,125 2,250 2,250 12 16 20 4,5 ,= 0,4TD2 ,P ,= ° ' 41 48 57 0,001 92 0,001 84 0,002 88 0,002 28 0,002 04 0,001 11 0,001 06 0,001 66 0,001 32 0,001 18 1 1 19 24 53 15 1 0 41 50 59 0,001 92 0,001 84 0,002 92 0,002 32 0,002 08 0,001 11 0,001 06 0,001 69 0,001 34 0,001 20 1 1 19 24 54 16 0,000 88 0,000 83 0,001 55 0,001 32 0,001 04 1 0 31 42 50 0,001 96 0,001 88 0,003 48 0,002 96 0,002 32 0,001 13 0,001 09 0,002 01 0,001 71 0,001 34 1 0 21 26 40 54 0,001 60 0,001 44 0,002 28 0,001 80 0,001 60 0,000 92 0,000 83 0,001 32 0,001 04 0,000 92 0 59 42 50 59 0,002 08 0,001 88 0,002 96 0,002 32 0,002 08 0,001 20 0,001 09 0,001 71 0,001 34 0,001 20 1 1 16 26 54 16 UNJ UNJ UNJ UNJ UNJ 0,001 44 0,002 28 0,001 80 0,001 60 0,001 44 0,000 83 0,001 32 0,001 04 0,000 92 0,000 83 0 42 50 59 0,001 88 0,003 00 0,002 32 0,002 08 0,001 88 0,001 09 0,001 73 0,001 34 0,001 20 0,001 09 1 1 26 55 16 26 UNJ UNJ UNJ UNJ UNJC 0,002 32 0,001 80 0,001 60 0,001 48 0,002 84 0,001 34 0,001 04 0,000 92 0,000 85 0,001 64 0 43 50 59 29 0,003 00 0,002 36 0,002 08 0,001 92 0,003 72 0,001 73 0,001 36 0,001 20 0,001 11 0,002 15 1 55 16 28 38 UNJ UNJ UNJ UNJ UNJ 0,002 32 0,001 80 0,001 60 0,001 48 0,002 36 0,001 34 0,001 04 0,000 92 0,000 85 0,001 36 0 43 50 59 43 0,003 04 0,002 36 0,002 08 0,001 92 0,003 08 0,001 76 0,001 36 0,001 20 0,001 11 0,001 78 1 56 16 28 56 UNJ UNJ UNJ UNJC UNJ 0,001 80 0,001 60 0,001 48 0,002 92 0,002 40 0,001 04 0,000 92 0,000 85 0,001 69 0,001 39 0 0 50 59 30 44 0,002 36 0,002 08 0,001 92 0,003 80 0,003 12 0,001 36 0,001 20 0,001 11 0,002 19 0,001 80 1 0 16 28 39 57 `,,```,,,,````-`-`,,`,,`,`,,` - 33 © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) Table (continued) (2) (3) (4) (6) (7) (8) External thread Series Nominal (5) (9) (10) (11) Internal thread size n symbol 0,4Td2 ,P ° ' 2,250 2,250 2,250 2,375 2,375 12 16 20 12 UNJ UNJ UNJ UNJ UNJ 0,001 80 0,001 60 0,001 48 0,002 40 0,001 84 0,001 04 0,000 92 0,000 85 0,001 39 0,001 06 0 0 2,375 2,375 2,500 2,500 2,500 16 20 12 UNJ UNJ UNJC UNJ UNJ 0,001 64 0,001 52 0,003 12 0,002 44 0,001 84 0,000 95 0,000 88 0,001 80 0,001 41 0,001 06 2,500 2,500 2,625 2,625 2,625 16 20 12 16 UNJ UNJ UNJ UNJ UNJ 0,001 64 0,001 52 0,002 48 0,001 84 0,001 64 2,625 2,750 2,750 2,750 2,750 20 12 16 UNJ UNJC UNJ UNJ UNJ 2,750 2,875 2,875 2,875 2,875 20 12 16 20 3,000 3,000 3,000 3,000 3,000 ,= 0,4TD2 ,P ° ' 50 59 44 51 0,002 36 0,002 08 0,001 92 0,003 16 0,002 40 0,001 36 0,001 20 0,001 11 0,001 82 0,001 39 1 1 16 28 58 1 0 0 10 29 45 51 0,002 16 0,002 00 0,004 04 0,003 20 0,002 40 0,001 25 0,001 15 0,002 33 0,001 85 0,001 39 1 0 19 32 37 59 0,000 95 0,000 88 0,001 43 0,001 06 0,000 95 1 0 10 45 51 0,002 16 0,002 00 0,003 20 0,002 40 0,002 16 0,001 25 0,001 15 0,001 85 0,001 41 0,001 25 1 1 19 32 59 19 0,001 52 0,003 16 0,002 52 0,001 84 0,001 64 0,000 88 0,001 82 0,001 45 0,001 06 0,000 95 0 10 29 46 51 0,002 00 0,004 12 0,003 24 0,002 40 0,002 16 0,001 15 0,002 38 0,001 87 0,001 41 0,001 25 0 1 32 38 59 19 UNJ UNJ UNJ UNJ UNJ 0,001 52 0,002 52 0,001 88 0,001 68 0,001 56 0,000 88 0,001 45 0,001 09 0,000 97 0,000 90 0 1 10 46 52 11 0,002 00 0,003 28 0,002 48 0,002 20 0,002 04 0,001 15 0,001 89 0,001 43 0,001 27 0,001 18 1 1 32 21 33 12 16 20 UNJC UNJ UNJ UNJ UNJ 0,003 20 0,002 56 0,001 88 0,001 68 0,001 56 0,001 85 0,001 48 0,001 09 0,000 97 0,000 90 0 1 29 47 52 11 0,004 16 0,003 32 0,002 48 0,002 20 0,002 04 0,002 40 0,001 92 0,001 43 0,001 27 0,001 18 1 1 38 21 33 3,125 3,125 3,125 3,250 3,250 12 16 UNJ UNJ UNJ UNJC UNJ 0,002 56 0,001 88 0,001 68 0,003 28 0,002 60 0,001 48 0,001 09 0,000 97 0,001 89 0,001 50 0 0 47 52 30 48 0,003 36 0,002 48 0,002 20 0,004 24 0,003 40 0,001 94 0,001 43 0,001 27 0,002 45 0,001 96 1 1 21 39 3,250 3,250 3,375 3,375 3,375 12 16 12 16 UNJ UNJ UNJ UNJ UNJ 0,001 88 0,001 68 0,002 64 0,001 92 0,001 72 0,001 09 0,000 97 0,001 52 0,001 11 0,000 99 0 52 48 53 0,002 48 0,002 20 0,003 40 0,002 52 0,002 24 0,001 43 0,001 27 0,001 96 0,001 45 0,001 29 1 1 21 22 34 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS ,= © ISO 1999 – All rights reserved Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - (1) ISO 3161:1999(E) Table (continued) (1) (2) (3) (4) (6) (7) (8) External thread Series Nominal (5) (9) (10) (11) Internal thread `,,```,,,,````-`-`,,`,,`,`,,` - size n symbol 0,4Td2 ,P ° ' 3,500 3,500 3,500 3,500 3,625 12 16 UNJC UNJ UNJ UNJ UNJ 0,003 32 0,002 64 0,001 92 0,001 72 0,002 68 0,001 92 0,001 52 0,001 11 0,000 99 0,001 55 0 3,625 3,625 3,750 3,750 3,750 12 16 12 UNJ UNJ UNJC UNJ UNJ 0,001 92 0,001 72 0,003 36 0,002 68 0,001 92 0,001 11 0,000 99 0,001 94 0,001 55 0,001 11 3,750 3,875 3,875 3,875 4,000 16 12 16 UNJ UNJ UNJ UNJ UNJC 0,001 72 0,002 72 0,001 96 0,001 76 0,003 40 4,000 4,000 4,000 4,125 4,125 12 16 12 16 UNJ UNJ UNJ UNJ UNJ 4,250 4,250 4,375 4,375 4,500 12 16 12 16 12 4,500 4,625 4,625 4,750 4,750 ,= 0,4TD2 ,P ° ' 30 48 53 49 0,004 32 0,003 44 0,002 52 0,002 24 0,003 48 0,002 49 0,001 99 0,001 45 0,001 29 0,002 01 1 1 40 22 0 53 31 49 53 0,002 52 0,002 24 0,004 36 0,003 52 0,002 52 0,001 45 0,001 29 0,002 52 0,002 03 0,001 45 1 1 22 40 0,000 99 0,001 57 0,001 13 0,001 02 0,001 96 0 50 54 31 0,002 24 0,003 52 0,002 56 0,002 28 0,004 44 0,001 29 0,002 03 0,001 48 0,001 32 0,002 56 1 1 22 10 24 41 0,002 72 0,001 96 0,001 76 0,001 96 0,001 76 0,001 57 0,001 13 0,001 02 0,001 13 0,001 02 0 1 50 54 54 0,003 56 0,002 56 0,002 28 0,002 56 0,002 28 0,002 06 0,001 48 0,001 32 0,001 48 0,001 32 1 1 10 24 10 24 UNJ UNJ UNJ UNJ UNJ 0,001 96 0,001 76 0,001 96 0,001 76 0,001 96 0,001 13 0,001 02 0,001 13 0,001 02 0,001 13 1 54 54 54 0,002 56 0,002 28 0,002 56 0,002 28 0,002 56 0,001 48 0,001 32 0,001 48 0,001 32 0,001 48 1 1 10 24 10 24 10 16 12 16 12 16 UNJ UNJ UNJ UNJ UNJ 0,001 76 0,002 00 0,001 80 0,002 00 0,001 80 0,001 02 0,001 15 0,001 04 0,001 15 0,001 04 1 55 55 0,002 28 0,002 64 0,002 36 0,002 64 0,002 36 0,001 32 0,001 52 0,001 36 0,001 52 0,001 36 1 1 24 13 27 13 27 4,875 4,875 5,000 5,000 5,125 12 16 12 16 12 UNJ UNJ UNJ UNJ UNJ 0,002 00 0,001 80 0,002 00 0,001 80 0,002 00 0,001 15 0,001 04 0,001 15 0,001 04 0,001 15 1 55 55 55 0,002 64 0,002 36 0,002 64 0,002 36 0,002 64 0,001 52 0,001 36 0,001 52 0,001 36 0,001 52 1 1 13 27 13 27 13 5,125 5,250 5,250 5,375 5,375 16 12 16 12 16 UNJ UNJ UNJ UNJ UNJ 0,001 80 0,002 00 0,001 80 0,002 00 0,001 80 0,001 04 0,001 15 0,001 04 0,001 15 0,001 04 1 55 55 0,002 36 0,002 64 0,002 36 0,002 64 0,002 36 0,001 36 0,001 52 0,001 36 0,001 52 0,001 36 1 1 27 13 27 13 27 35 © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS ,= Not for Resale ISO 3161:1999(E) Table (continued) (1) (2) (3) (4) (6) (7) (8) External thread Series Nominal (5) (9) (10) (11) Internal thread size n symbol 0,4Td2 ,P ° ' 5,500 5,500 5,625 5,625 5,750 12 16 12 16 12 UNJ UNJ UNJ UNJ UNJ 0,002 00 0,001 80 0,002 08 0,001 88 0,002 08 0,001 15 0,001 04 0,001 20 0,001 09 0,001 20 1 5,750 5,875 5,875 6,000 6,000 16 12 16 12 16 UNJ UNJ UNJ UNJ UNJ 0,001 88 0,002 08 0,001 88 0,002 08 0,001 88 0,001 09 0,001 20 0,001 09 0,001 20 0,001 09 1 0,4TD2 ,P ,= ° ' 55 57 57 0,002 64 0,002 36 0,002 68 0,002 44 0,002 68 0,001 52 0,001 36 0,001 55 0,001 41 0,001 55 1 1 13 27 14 29 14 57 57 0,002 44 0,002 68 0,002 44 0,002 68 0,002 44 0,001 41 0,001 55 0,001 41 0,001 55 0,001 41 1 1 29 14 29 14 29 `,,```,,,,````-`-`,,`,,`,`,,` - ,= 36 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - 37 © ISO 1999 –forAll rights reserved Copyright International Organization Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - 38 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - 39 © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) `,,```,,,,````-`-`,,`,,`,`,,` - 40 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS © ISO 1999 – All rights reserved Not for Resale `,,```,,,,````-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale ISO 3161:1999(E) ICS 49.030.10 Price based on 40 pages `,,```,,,,````-`-`,,`,,`,`,,` - © ISO 1999 – All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale