1、STD-BSI BS EN 3381-ENGL L777 m Lb2Libb7 0575747 827 m BRITISH STANDARD AEROSPACE SERIES Screws, 100“ countersunk normal head, offset cruciform recess, close tolerance normal shank, short thread, in titanium, anodized, Mos2 lubricated - Classification: 1100 MPa (at ambient temperature) / 315 “C The E
2、uropean Standard EN 3381 : 1996 has the staim of a British Standard ICs 49.030.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 3381 : 1997 STD.BSI BS EN 33BL-ENGL 1777 Lb24bb9 0575748 7b3 Amd. No. BS EN 3381 : 1997 Date Text affected Committees responsible for this Br
3、itish Standard The preparation of this British Standard was entrusted to Technical Committee ACW12, Aerospace fasteners and fastening systems, upon which the foiowing bodies were represented Association of Electronics, Telecommunications and Business Equipment British Industrial Fasteners Federation
4、 Minktry of Defence Society of British Aerospace Companies Ltd. Industries This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1997 O BSI 1997 The following BSI r
5、eferences relate to the work on this standard Committee reference ACW12 Draft for comment 88/74827 DC ISBN O 580 27028 9 BS EN 3381 : 1997 Contents page Inside front cover Committees responsible Nationai foreword ii Foreword 2 Specification 1 Scope 3 2 Nonnative references 3 3 Required characteristi
6、cs 4 4 Designation 7 6 Marking 7 6 Technical specification 8 7 Overshedbolts 8 O BSI 1997 1 STD-BSI BS EN 3381-ENGL 1997 1b2YbbS 0575750 311 W BS EN 3381 : 1997 National foreword This British Standard has been prepared by Technical Committee ACW12 and is the English language version of EN 3381 : 199
7、6 Amspace series - Screws, 1 O0 o countersunk nod head, offset clucqorm recess, close tolemnce normal shunk, short thread) in titanium, anodized, Mos2 lubricated - Classifkatwn: 1100 MPa (at ambient tempemture)/315 OC, published by the European CommitLee for Standardization (CEN). EN 3381 : 1996 was
8、 produced as a result of international discussions in which the United Kingdom took an active part. Cross-references Publication referred to EN 2000 : 1991 EN 2424 : 1995 EN 3042 : 1991 IS0 3353 : 1994 IS0 58552 : 1988 IS0 7913 : 1994 IS0 7994 : 1985 Corresponding British Standard BS EN 2000 : 1992
9、Quality assurance - EN aerospace products -Approval of the quality system of manufacturem BS EN 2424 : 1995 Marking of aerospace products BS EN 3042 : 1992 Quality msumnce - EN aerospace products - QuaLifkation procedures BS 2A 231 : 1993 Roiled threads for bolts. Lead and rururut requirements BS 62
10、93 Amspace. MJ threads Part 2 : 1994 Limit dimens2ons for bolts and nuts BS 2A 296 : 1995 Bolts and screws) met application : EN 2491, 5 pm to 10 pn. STD-BSI BS EN 3381-ENGL 1777 m Lb24bb9 0575755 7T3 m Page 5 EN 3381 : 1996 STDmBSI BS EN 3381-ENGL 1777 m LbZLibb9 057575b 83T m Page 6 EN 3381 : 1996
11、 F Q o c I r- (Y c 0 - m N 000 c+io; C Xm m i c I- o t - c .c h P O d O h IC- - O00 or-a) El El c O O 0 c c? O0 I I c - O O a) O O m t r c - N - i E E m E F L c al B 8 .- U m L 5 5 a al e al o X o + In ln (D In 5 5 Q o C O o 0 m C m L - - c o O U U 5 $ N O I B E o c U al E O U al al U - c 4 m C al a
12、l O c VI U c O 5 Ef L 0 al U O o m c al al I- u C al E 2 5 - U o E al O .- n m 5 al m E u) 3 .- - ai 5 .- L, O r O U a I I U u) O U s n n (P r al l- c O U al - i 3 C O n .- U m c E c .- 8 E c m .- m- E o, r. ul Y v e O v v u- .- m n 5 al C O u- m o 2.E O m O ;r L! E E m O -I O u- c al .- - .- - E O
13、.- U z STDmBSI BS EN 338%-ENGL 1997 m LbZLibbS 0575757 77b m Drive IS0 7994 IS0 7994 unribbed Page 7 EN 3381 : 1996 Code R A 4 Designation EXAMPLE : 030 and 040 050 to 200 Description block Identity block EN3381 DO5001 OAF Number of this standard Hole code (see table 2) Diameter code (see table 1) L
14、ength code see table 1) Drive code see table 3) Lubricant code (see 3.4) N C + MJ NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. Table 2 5 Marking See table 4 and figure 1, indented. Table 4 I EN 2424 I Style Diameter code I STD-BSI BS EN 33
15、81-ENGL 1777 m 1bZqbb7 0575758 b02 m Page 8 EN 3381 : 1996 6 Technical specification IS0 91 52, with the following modifications : 6.1 Approval of manufacturers EN 2000 6.2 Qualification of screws EN 3042 6.3 Requirements deleted - Double shear strength ; - Recess removal torque resistance in accept
16、ance. 7 Oversized bolts EN 4016 STD.BS1 BSEN 3381-ENGL 1997 m 1b2Libb9 0575759 549 m BS EN 3381 : 1997 List of references See national foreword O BSI 1997 STD-BSI BS EN 3381-ENGL 1997 1bZLibbS 05757bO 2b0 BS EN 3381 : 1997 BSI 389 Chwick Hi Fax: 0181 996 7400. BSI offers members an individud updatin
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21、ions of the intedonal standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retried system or transmitted in any form or by any means - electronic, photocopying, recording or otherwise - without prior written permissio
22、n from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior Written permission of BSI must be obtained If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager, BSI, 389 Chiswick High Road, London W4 4AL ISBN O 580 27028 9 ACE12
