1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 21.040.20 ISBN 0-626-15614-9 SANS 1700-2-10:1996 Edition 1 and nat. amdt 1 ISO 263:1973 Edition 1 Any reference to SABS 1700-2-10 is deemed to be a r
4、eference to this standard (Government Notice No. 1373 of 8 November 2002) SOUTH AFRICAN NATIONAL STANDARD Fasteners Part 2: Screw threads Section 10: ISO inch screw threads General plan and selection for screws, bolts and nuts Diameter range 0,06 to 6 in This national standard is the identical imple
5、mentation of ISO 263:1973 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof ! private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standa
6、rds South Africa SANS 1700-2-10:1996 Edition 1 and nat. amdt 1 ISO 263:1973 Edition 1 Table of changes Change No. Date Scope Nat. amdt 1 2004 Amended to change the designation of SABS standards to SANS standards with no technical changes. Abstract Tabulates ISO inch screw threads (except for pipe th
7、reads) having the basic profile for triangular screw threads specified in ISO 68. Comprises both a general plan of the ISO inch screw threads and the ISO inch screw threads for screws, bolts and nuts. Keywords ISO inch threads, bolts, diameter, diameter measurement, fasteners, nuts, screw threads, s
8、crews (bolts), specifications, tables (data), threads. National foreword This South African standard was approved by National Committee StanSA TC 5120.01, Screw threads and fasteners, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This e
9、dition is technically identical to SABS 1700-2-10:1996. INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXAYHAPOAHAX OPTAHM3ALJMII l-IO CTAHAAPTW3AIJWM .ORGANISATION INTERNATIONALE DE NORMALISATION IS0 inch screw threads - General plan and selection for screws, bolts and nut
10、s - Diameter range 0,06 to 6 in First edition - 1973-04-01 UDC 621.882.082.2 Ref. No. IS0 263-1973 (E) Descriptors : fasteners, threads, screw threads, screws, bolts, nuts (fasteners), dimensions, diameters, thread pitch, designation. Price based on 5 pages FOREWORD IS0 (the International Organizati
11、on for Standardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the ri
12、ght to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as Inte
13、rnational Standards by the IS0 Council. Prior to 1972, the results of the work of the Technical Committees were published as IS0 Recommendations; these documents are now in the process of being transformed into International Standards. As part of this process, International Standard IS0 263 replaces
14、 IS0 Recommendation R 263-1962 drawn up by Technical Committee lSO/TC 1, Screw threads. The Member Bodies of the following countries approved the Recommendation : Argentina France Australia Germany Austria Greece Canada Hungary Chile India Colombia Israel Czechoslovakia Italy Denmark Japan Finland N
15、etherlands The Member Bodies of the following Recommendation on technical grounds : New Zealand Norway Poland Spain Switzerland United Kingdom U.S.A. Bulgaria Sweden U.S.S.R. countries expressed disapproval of the 0 International Organization for Standardization, 1973 l Printed in Switzerland INTERN
16、ATIONAL STANDARD IS0 2634973 (E) IS0 inch screw threads - General plan and selection for screws, bolts and nuts - Diameter range 0.06 to 6 in 1 SCOPE AND FIELD OF APPLICATION This International Standard tabulates IS0 inch screw threads (except for pipe threads) having the basic profile for triangula
17、r screw threads specified in IS0 68, /SO general purpose screw threads - Basic profile. It comprises both a general plan of the IS0 inch screw threads and the IS0 inch screw threads for screws, bolts and nuts, the latter being a selection from the former. It contains sizes in the diameter range 0.06
18、 to 6 in, comprising a number of series of diameter/pitch combinations, together with a system of thread designations. It remains for each industry to choose for itself, by means of selection among the screw threads of this International Standard, the diameter/pitch combinations appropriate to its o
19、wn needs. 2 THREADS SERIES The general plan is characterized by a number of thread series, i.e. groups of diameter/pitch combinations distin- guished from each other by the number of threads per inch associated with specific diameters of threads. These thread series are shown in Table 1. 2.1 Diamete
20、rs Columns 1 and 2 of Table 1 give primary and secondary sizes which should suffice to meet the common needs of design. Column 3 gives the decimal equivalents of these sizes. 2.2 Number of threads per inch Columns 4 to 14 (inclusive) of Table 1 give the number of threads per inch which are recommend
21、ed for association with the sizes in columns 1 and 2. These columns of threads per inch are divided into two groups : - series with graded pitches : columns 4, 5 and 6; - series with constant (uniform) pitches : columns 7 to 14. 2.2.1 Series with graded pitches There are three series with graded pit
22、ches. They are headed “coarse”, “fine” and “extra-fine”, in compliance with present practice. These terms denote the relative magnitudes of the pitches of the three series for any given diameter of thread and do not imply any difference in the quality of the threads in the series. The coarse and fin
23、e thread series shall be the first choice for general engineering applications, and they form the selected series for the commercial production of screws, bolts and nuts. 2.2.2 Series with constant (uniform) pitches In addition to the three series of graded pitches, Table 1 includes columns of const
24、ant pitches which have been selected from the range 4 to 32 threads per inch. Each of these series is limited to an appropriate range of diameters. 3 DESIGNATIONS The screw threads in this general plan are designated as shown in the column headings of Table 1, i.e. as follows : 3.1 Series with grade
25、d pitches Coarse thread series : designation UNC; for example : l/4-20 UNC, No. 4-40 UNC Fine thread series : designation UNF; for example : l/4-28 UNF, No. 4-48 UNF Extra-fine thread series : designation UNEF; for example : l/4-32 UNEF. 3.2 Series with constant (uniform) pitches All of the diameter
26、/pitch combinations of the threads in these constant-pitch series are designated UN; for example 1-16 UN. 1 IS0 263-1973 (E) 4 DIAMETER/PITCH COMBINATIONS TABLE 1 - biametedpitch Number of threads per inch Basic Series with 1 Sizes Major graded pitches diameter / Series with constant (uniform) pitch
27、es Coarse Fine Extra-1 4-thread 6-thread otherwise the length of engagement must be selected to meet the above-required strength conditions. A.l.3 Extra-fine thread series This series, which extends up to 1 11 /I6 in diameter, is applicable where even finer pitches of threads are desirable for short
28、 lengths of engagement and for thin-walled tubes, nuts, ferrules or couplings. It is also generally applicable under the conditions stated above for the fine thread series. A. 1.4 Constant-pitch series The various constant-pitch series with 4, 6, 8, 12, 16, 20, 28 and 32 threads per inch, given in T
29、able 1, offer a comprehensive range of diameter/pitch combinations for those purposes where the threads in the coarse, fine and extra-fine series do not meet the particular requirements of the design. When selecting threads from these constant-pitch series, preference should be given, wherever possi
30、ble, to those tabulated in the 8, 12 or 16 thread series. IS0 263-1973 (E) A.2 CORRESPONDING INCH-MILLIMETRE VALUES Tables 2 and 3 give, for the IS0 inch screw threads, the corresponding values in millimetres of a) basic major diameters (Table 2) and b) pitches (Table 3). SiZeS 1 in mm No. 0 0.060 0
31、 1,524 No. 1 0.073 0 1,854 No. 2 0.086 0 2,184 No. 3 0.099 0 2,515 No. 4 0.112 0 2,845 No. 5 0.125 0 3,175 No. 6 0.138 0 3,505 No. 8 0.164 0 4,166 No. 10 0.190 0 4,826 No. 12 0.216 0 5,486 l/4 0.250 0 6,350 5/16 0.312 5 7,938 3l8 0.375 0 9,525 7/16 0.437 5 11,112 l/2 0.500 0 12,700 116 0.562 5 14,28
32、8 5l8 0.625 0 15,875 l/16 0.687 5 17,462 314 0.750 0 19,050 13/16 0.812 5 20,638 7l8 0.875 0 22,225 15/16 0.937 5 23,812 1 1.0000 25,400 1/16 1.062 5 26,988 11/8 1.125 0 28,575 13/16 1.187 5 30,162 11/4 1.250 0 31,750 1 5/16 1.312 5 33,338 1 318 1.375 0 34,925 1 7/16 1.437 5 36,512 11/2 lQ/16 1 5l8
33、1“/16 13/4 1“/16 . 1 V8 115/16 1.500 0 38,100 1.562 5 39,688 1.625 0 41,275 1.687 5 42,862 1.750 0 44,450 1.812 5 46,038 1.875 0 47,625 1.937 5 49,212 TABLE 2 - Basic major diameters TABLE 3 - Pitches Basic major diameter Sizes 1 in mm 2.000 0 2.125 0 2.250 0 2.375 0 2.500 0 2.625 0 2.750 0 2.875 0
34、Number oj threads per inch 1 in mm 2 218 z1/4 Z3/8 2l/2 Z5/8 z3/4 Z7/8 50,800 53,975 57,150 60,325 53,500 66,675 69,850 73,025 80 0.012 500 0,317 5 72 0.013 889 0,352 8 64 0.015 625 0,396 9 56 0.017 857 0,453 6 48 0.020 833 0,529 2 44 0.022 727 0,577 3 40 0.025 000 0,635 0 36 0.027 778 0,705 6 3 3.0
35、00 0 76,200 32 0.031 250 0,793 8 3 18 3.125 0 79,375 28 0.035 714 0,907 1 3 l/4 3.250 0 82,550 24 0.041 667 1,058 3 3 3l8 3.375 0 85,725 20 0.050 ooo 1,270 0 3 l/2 3.500 0 88,900 18 0.055 556 1,411 1 3 5/s 3.625 0 92,075 16 0.062 500 1,587 5 3 314 3.750 0 95,250 14 0.071 429 1,814 3 3 7/8 3.875 0 98
36、,425 13 0.076 923 1,953 8 4 4.000 0 101,600 418 4.125 0 104,775 474 4.250 0 107,950 J3/8 4.375 0 111,125 /2 4.500 0 114,300 45/8 4.625 0 117,475 43/4 4.750 0 120,650 a718 4.875 0 123,825 5 5.000 0 127,000 5 l/s 5.125 0 130,175 5 II4 5.250 0 133,350 5 3/8 5.375 0 136,525 5 l/2 5.500 0 139,700 5 5/8 5
37、.625 0 142,875 5 3/4 5.750 0 146,050 5 7/8 5.875 0 149,225 12 0.083 333 2,116 7 11 0.090 909 2,309 1 10 0.100 000 2,540 0 9 0.111 111 2,822 2 8 0.125 000 3,175 0 7 0.142 857 3,628 6 6 0.166 667 4,233 3 5 0.200 ooo 5,080 0 4 72 0.222 222 5,644 4 4 0.250 000 6,350 0 6 6.000 0 152,400 Basic major diameter Pitch
