JIS-B-1163-2001-R2005-ENG.pdf
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1、J IS JAPANESE IN DUSTRIAL STA N DA R D Translated and Published by Japanese Standards Association Square nuts ICs 21.060.20 Descriptors : square-head fasteners, nuts, steels Reference number : JIS B 1163 : 2001 (E) 6s Copyright Japanese Standards Association Provided by IHS under license with JSALic
2、ensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:51:58 MDTNo reproduction or networking permitted without license from IHS -,-,- B 1163 : 2001 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of Economy,
3、 Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently JIS B 1163 : 1995 is replaced with JIS B 1163 : 2001. Date of Establishment: 1955-02-01 Date of Revision: 2001-03-20 Date of Public Notice in O
4、fficial Gazette: 2001-03-21 Investigated by: Japanese Industrial Standards Committee Divisional Council on Machine Elements JIS B 1163 :2001, First English edition published in 2001-09 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In th
5、e event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2001 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 mic
6、rofilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:51:58 MDTNo reproduction or networking permitted without licens
7、e from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 1163 : 2001 Square nuts Introduction This revision has been made for formal modification resulting from the revision of JIS B 1052 on January 20, 1998 and the withdrawal of Annex 3 to JIS B 1052 on December 31, 2000 to have resulted in the specific
8、ation given in the Annex2 to JIS B 1181. 1 Scope This Japanese Industrial Standard specifies the steel square nuts for general use (hereafter referred to as “nuts”). However, the square nuts to be used for wood working are excluded. The strength classes 4T to 6T of the mechanical properties specifie
9、d in this Stan- dard are to be disused in the future, and the mechanical properties in the Annex 1 or the Annex 2 to JIS B 1052 are to be introduced. 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. T
10、he most recent editions of the standards (including amendments) indicated below shall be applied. JIS B O101 Screw threads and fasteners-Vocabulary JIS B 0205 Metric coarse screw threads JIS B 0207 Metric fine screw threads JIS B O209 Limits of sizes and tolerances for metric coarse screw threads JI
11、S B 0601 Surface roughness-Definitions and designation JIS B 1042 Fasteners-Surface discontinuities-Part 2 : Nuts JIS B 1044 Threaded components-Electroplated coatings JIS B 1052 Mechanical properties of steel nuts JIS B 1071 Method of verification for size and geometry of threaded fasteners JIS B 1
12、091 Fasteners-Acceptance inspection JIS B 1181 Hexagon nuts and hexagon thin nuts 3 Definitions O101 apply. For the purpose of this Standard, the definitions given in JIS B 4 Mechanical properties The mechanical properties of the nuts shall be in ac- cordance with the strength classes 4T, 5T and 6T
13、of mechanical properties specified in the Annex 2 to JIS B 1181. 5 Shape and dimensions The shape and dimensions of the nuts shall be in ac- cordance with Attached Table 1. 6 Screw threads The screw threads of the nuts shall be the metric coarse screw threads in JIS B 0205, and the tolerance class s
14、hall be 6H or 7H in JIS B 0209. However, unless otherwise particularly specified, it shall be 6H. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:51:58 MDTNo reproduction or networking p
15、ermitted without license from IHS -,-,- 2 B 1163 : 2001 Strength class I - The screw threads processed with electroplating also shall be within the permis- sible range of each tolerance class. However, the screw thread accuracies, when the hot dipping has been processed, shall be as agreed between t
16、he parties concerned. If metric fine screw threads are required, it shall be designated by the purchaser. In this case, the pitch of the fine screw threads shall generally be in accordance with the Table 3 of JIS B 0207. Chemical composition % (l) C (max.) P (max.) S (max.) 7 Surface conditions As t
17、o the surface conditions of the nuts the surface rough- ness shall conform to the specifications of Table 2, and, in addition, those shall be free from cracks, flaws, burrs and the like which are detrimental to use. The permissible limits of the surface defects, unless particularly specified, should
18、 preferably be in accordance with JIS B 1042. 8 Material The material of nuts shall, as a rule, be carbon steel which satisfies the chemical composition in Table 1, and the products shall also satisfy the mechanical properties specified in 4. Table 1 Chemical composition I 4T,5Tand6T I 0.5 I 0.110 I
19、 0.150 I Note (1) By agreement between the parties concerned, free cut- ting steel may also be used. In this case, the contents of P, S and Pb shall be as follows: P: 0.12 % max., S: 0.34 % max., Pb: 0.35 % max. 9 Surface treatment When the surface treatment of the plating or the like is required on
20、 the nuts, it shall be designated by the purchaser. In the case of electroplating, it shall be in accordance with JI$ B 1044. 10 Degree of finish The degree of finish on the nuts shall be in accordance with Table 2. Copyright Japanese Standards Association Provided by IHS under license with JSALicen
21、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:51:58 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 B 1163 : 2001 Proof load stress Table 2 Degree of finish on nuts It shall be in accordance with 5.2.1 of the Annex 2 to JIS B 1181. a Hardne
22、ss Division It shall be in accordance with 5.2.2 of the Annex 2 to JIS B 1181. Finished Semi-finished Regular Degree of finish The surface roughness of the upper surface and the bearing surface shall be 25 pmRz, and the shape and dimensions shall comply with the specifications of the grade “Finished
23、” in Attached Table 1. Rz25 The surface roughness of the bearing surface shall be 25 pmRz, and the shape and dimensions shall comply with the specifica- tions of the grade “Semi-finished” in Attached Table 1. I Though no specification applies to the surface roughness, the shape and dimensions shall
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