JIS-B-0206-ERTA-1973-R2005-R1985-ENG.pdf
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1、7 / 7- - J I S BXO2Ob 73 m 4933608 0007564 b m JIS BO206-1973 Unified Coarse Screw Threads 1 Position 2.2 F o d a e (to be added to emark) Reference: the following are the calculation exanples of d, d and 4 on the basis of 7/16- 14WC. d=(d) x 2 5 . 4 (0.437 5) X25.4=11.112 4 =(Ci - n 19) x25.4=(0 .
2、a 7 5- 14 519)x25.4=9.934 d=(d-1.M)2532)25.4=(0.a7 5- 14 532) XE .4=9.149 n Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:53:24 MSTNo reproduction or networking permitted without license
3、 from IHS -,-,- J I S BX02Ob 73 4733b08 00075bS 8 W ; - /. UDC 621.882.082.3 JAPANESE I NDUSTRIAL STANDARD Unified Coarse Screw Threads JIS B 0 2 0 6 - 1 9 7 3 Translated and Published by Japanese Standards Association Printed in Japan 3s Copyright Japanese Standards Association Provided by IHS unde
4、r license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:53:24 MSTNo reproduction or networking permitted without license from IHS -,-,- J I S B*O2Ob 73 m 4933b08 000756b T m Translation without guarantee standard in Japanese is to be evidence i n the event
5、of any doubt arising, the original Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:53:24 MSTNo reproduction or networking permitted without license from IHS -,-,- J I S B*R2Ob 73 = 4933bR
6、0007567 L UDC 621.882.082.3 JAPANESE INDUSTRIAL STANDARD J I S Unified Coarse Screw Threads B 0206-1973 (Reaffirmed: 1985) 1. Scope This Japanese Industrial Standard specifies the basic profile, and the formal and basic size of unified coarse screw threads used for aircrafts and otherwise only when
7、especially required. Reference: This unified coarse screw threads are coincident with the coarse series screw threads of IS0 inch screw threads specified in IS0 263. 2, Basic Profile, Formulae and Basic Size 2.1 Basic Profile The basic profile is shown with the thick continuous line in Figure. e Fig
8、ure Basic Profile of Unified Coarse Screw Threads Reference: This basic profile is coincident with the basic profile of IS0 general purpose screw threads specified in IS0 68. Formulae used for calculation of basic size shall be as follows: 2.2 Formulae H= 25. a d=(d)x25.4 D-d O. 866025 25.4 p = - n
9、n Hi= O* x 25.4 dz= (d - O 649519 ) x 25.4 DZ-dZ n n 1,082532 ) 25. .di=(d- Di=dl where n : number of thread ridges per 25.4 mm Remark: The numerical values in parenthese shall be the unit of inch rounded off to a place of 0,0001 inch. Applicable Standards : IS0 68-IS0 general purpose screw threads-
10、Basic profile IS0 263-IS0 inch screw threads. General plan and selection for screws , e bolts and nuts-Diameter range 0.06 to 6 in Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:53:24 MST
11、No reproduction or networking permitted without license from IHS -,-,- J I S B*O2Ob 73 W 4933608 0007568 3 = 2. B 0206-1973 2.3 Basic Size The basic size shall be in accordance with Table. Table Basic Size of Unified Coarse Screw Threads Unit: mm Yumber If :hread ridges :per 15.4 mm n Thread werlap
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- JIS 0206 ERTA 1973 R2005 R1985 ENG
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