ISO_898-6_Stand_12-1994.pdf
《ISO_898-6_Stand_12-1994.pdf》由会员分享,可在线阅读,更多相关《ISO_898-6_Stand_12-1994.pdf(12页珍藏版)》请在三一文库上搜索。
1、INTERNATIONAL ISO! STANDARD 898-6 i Second edition 1994-12-15 8 Mechanical properties of fasteners - Part 6: Nuts with specified proof load values -Fine pitch thread Caracteristiques mecaniques des elements de fixation - Partie 6: Ecrous avec charges depreuve specifiees -Filetage a pas fin 8 ISO Ref
2、erence number ISO 898-6:1994(E) ISO 898-6:1994(E) Foreword ISO (the International Organization fr 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
3、member body interested in a subject fr 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
4、 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies fr voting. Publication as an International Standard requires approval by at least 75 % of the member bodies cas
5、ting a vote. International Standard ISO 898-6 was prepared by Technical Committee Isorrc 2, Fasteners, Subcommittee SC 1, Mechanical properties of fasteners. This second edition cancels and replaces the first edition (ISO 898-6: 1988), which has been technically revised. ISO 898 consists of the foll
6、owing parts, under the general title Mechanical properties of fasteners: -Part 1: Bolts, screws and studs -Part 2: Nuts with specified proof load values -Coarse thread . -Part 5: Set screws and similar threaded fasteners not under tensile stresses -Part 6: Nuts with specified proof load values -Fine
7、 pitch thread -Part 7: Torsional test and minimum torques tor botts and screws with nominal diameters 1 mm to 10 mm C ISO 1994 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 p
8、hotocopying and microfilm, without permission in writing from the publisher. International Organization tor Standardization Ca se Postale 56 .CH-1211 Geneve 20 .Switzerland Printed in Switzerland ii INTERNATIONAL STANOARD“ ISO ISO 898-6:1994(E) I . Mechanical properties of fasteners - Part 6: Nuts w
9、ith specified proof load values -Fine pitch thread 8 1 Scope -with thread tolerances 6H in accordance with ISO 965-1 and 965-2 (see note 2); This part of ISO 898 specifies the mechanical proper- ties of nuts with specified proof load values when -with specific mechanical requirements; tested at an a
10、mbient temperature range of + 10C to + 35 C. Mechanical and physical properties will vary -with widths across flats as specified in ISO 272; with respect to temperature and property class. -with nominal heights greater than or equal to Products conforming to the requirements of this part 0,5dl); of
11、ISO 898 are evaluated only at the ambient tem- perature range and may not retain the specified -made of carbon steel or alloy steel (see note 1). physical properties at higher and lower temperatures. It does not apply to nuts requiring special properties At temperatures higher or lower than the ambi
12、ent such as temperature range, a significant change in properties may occur. When fasteners are to be used above or -weidability; 8 below the ambient temperature range, it is the re- sponsibility of the user to ensure that the mechanical -prevailing torque performance (see ISO 2320); and physical pr
13、operties are suitable fr his particular service conditions. -corrosion resistance (see ISO 3506); This part of ISO 898 applies to nuts -ability to withstand temperatures above + 300 C or below -50 C. (However, see note 1.) -with nominal thread diameters, d, from 8 mm up to and including 39 mm (fine
14、pitch thread); NOTES -of triangular ISO thread and with diameters and 1 Nuts made tram tree-cutting steel should not be used . h.d.hISO 68dISOabove + 250 c. pltc es In accor ance Wlt an 262 (fine pitch thread); 2 With thread tolerances other or larger than 6H, a de- crease in the stripping strength
15、should be considered (see -with diameter/pitch combinations in accordance table 1). with ISO 261 (fine pitch thread); 1) In ISO 898:1988, the symbol D was used. 1 ISO 898-6:1994(E) c ISO ISO 965-2: 1980, ISO general purpose metric screw threads -Tolerances -Part 2: Limits of sizes tor Table 1 -Reduc
16、tion in thread strength general purpose bolt and nut threads -Medium Nominal thread quality, d.tTest load, % lame er ISO 4964: 1984, Steel -Hardness conversions. d Thread tolerances mm 6H 7H 6G ISO 6157-2:-2), Fasteners -Surface discontinuities -Part 2: Nuts with threads M5 to M39. 8 d 16 100 96 97,
17、5 16 ISO Nuts of property classes 05, 8 (style 1), 10 and 12 shall be hardened and tempered. Table 3 -Designation system and stresses under proof load tor nuts with nominal heights 0,5d and ISO ISO 898-6:1994(E) I Table 5 -Mechanical properties . Q) Q) Q) N I N I a C/I C/I C/I c: .c UJ UJ Z -Z -Z .-
18、UJ Q) Q) Q) -UJUJ +“ t- +“ t- +“ IUJQ) J?, 0 J?, 0 J?,0Q)C: C/I Z C/I Z C/I c:“o “0- - m m.c x N - x N - x () .cE I“, 0 “ “ 0 I “ “ L!) I E:J .nE () I E () I E () :JE 1/1 1/1 N 1/1 E .- Ln Uc: .-C G) 1/1 G) 1/1 c: .- “E c L!) 0 CG) C L!)I C G) C L!)I.E -E .-r- 0 u .-0 u -0 E : E : E N .t; !J Q) :J-
19、,-“ ,-“ “ c: “0 G) -, G) -, G) - m “C “C “C Q)O C“CN C“CN C“CN 0.co EEE- o 0 0 o 0I o 0 I00 I/I-E 0 N 1/1- E 0 1/1- E N 0 1/1- CD r- 1/1- 1/1- =- G)oz G)oz G)oz mc. :;e :;e :;e -Q) Cl)Q. Cl)Q. Cl)Q. Cf= . “0- Q) UJ . .P. c:.P. .P. -.:; Gi “l; :c “l; N UJm C/I +“ C/I C/I Q)UJ u “O.c “ Z Z Z m .2 5 Q)
20、 -Q) -Q) -O.c c: +m +m +m :;r “ t; 0 t; 0 t; 0 0“0 E ec: G) c.m .c 1/1 X () 1/1 - x () 1/1 - x () Q) “0- .: I“, L!) “ “ L!) “ “ L!).cQ) 0 - E () -I E () -I E () 0- c: U G) 1/1 U -U -Q) .2 Ln1/I 1/1 1/1 c. +“ t: 0 ,C t: 1/1 t: 1/1 Q) E G) “Cc N G) G) cO L!) G) G) cO 0 eQ) Co -r- Q. u c.- L!) 0 Q. u c
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO_898 _Stand_12 1994
链接地址:https://www.31doc.com/p-3657755.html