Bsi bs a 310 1995 (1999) iso 3186 1994

BRITISH STANDARD AEROSPACE SERIES BS A 310 1995 ISO 3186 1994 Bolts, large bihexagonal head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes 12[.]

Bolts, larg e

This Bri sh Stan ard, ha ing

b en pre ared u der the

directonof the Eng ine ring

SectorBo rd, was published

u derthe authoriy fthe

Stan ards Bo rd an comes

into efect on

1 Ma 1 9

© BSI 0 -1 9

The folowing BSI references

The prep ration of this British Stand rd was entrusted to Tech ical

Commit e ACE/12, Aerosp ce fastener and fastening sy stems, upon which

the folowing bodies were represented:

British Industrial Fastener Fed eration

Ministry of Defence

Society of British Aerosp ce Comp nies Ltd

The Association of Electronic , Telecommu ications and Busines Equipment

Ind ustries

Am endm ents is ued sinc publ cation

Pag e

National foreword

This British Stand rd has be n prep red b Technical Commit e ACE/12 It is

identical with ISO318 :19 4,A er ospa ce — B ols, la r ge bihexa gona l hea d ,nor ma l

sha nk, shor t o med ium length MJ thr ea d s, meta llc ma ter ia l, coa ted o u coa ted ,

str ength cla ss s12 0MPa to1 80 MPa — D imensions, publ shed b the

International Org anization for Stand rdization ( ISO)

The Technical Commit e has rev iewed the prov isions of ISO4 9 :19 8, to which

normativ e reference is ma e in the text, and has decid ed that they are ac epta le

for use in conju ction with this stand ard

A British Stand ard d oes not purport to includ e al the neces ary prov isions of a

contract User of British Stand rd s are responsible for their cor ect a plcation

Com pl anc with a British Standard does not ofitself confer im m unity

f om leg al o l g ations

Cros - referenc s

Inte national Stand rd Cor esp nding British Stand rd

ISO 28 -2:19 8 BS EN 2028 ISO system o lmis a nd fis

Part 2:19 2 Ta ble o sta nd a r d toler a nc gr a d es a nd lmi

d evia tions f r hole a nd sha fts

( Id entical

ISO 3 5 :19 2 BS 2A 231:19 3 R oled thr ea d s fr bols Lea d a nd

r unout r equir ements

( Id entical

ISO 5 5 -2:19 8 BS 629 A er ospa ce — MJ thr ea d s

Part 2:19 4 Limi d imensions f r bol s a nd n ts

( Id entical

ISO 7 13:19 4 BS 2A 29 :19 5 B ols a nd s r ews, metr ic — Toler a nc s o

f r m a nd posiion

( Id entical

Sum mary of pag es

1 Scope

This International Stand rd specifies the

d imensions of larg e bihex g onal hea bolts, with

close or larg e tolerance normal shank, an short or

med ium leng th MJ threa s, in metal ic material,

coated or u coated , with streng th

clas es1 25 MPa to18 0MPa

It is intended for the d rawing up of aerosp ce

product stand rd s

2 Normative r f r nces

The fol owing stand ard s contain prov isions which,

throug h reference in this text, constitute prov isions

of this International Stand ard At the time of

publcation, the editions ind icated were v ald All

stand ards are subject to rev ision, and p rties to

ag re ments b sed on this International Stand rd

are encourag ed to inv estig ate the pos ibi ty of

a ply ing the most recent editions of the stand rds

indicated below Member of IEC and ISO maintain

reg ister of cur ently v ald International Stand ards

ISO 28 -2:19 8, ISO system o lmis a nd fis —

Pa r t2: Ta ble o sta nd a r d toler a nc gr a d es a nd

lmi d evia tions fr hole a nd sha fts

ISO 3 5 :19 2, A er ospa ce — R oled thr ea d s f r

bols— Lea d a nd r unout r equir ements

ISO 4 9 :19 8, Fa stener s f r a er ospa ce

constr ucton— B i-hexa gona l wr enching

configur a tion

ISO 5 5 -2:19 8, A er ospa ce — MJ thr ea d s —

Pa r t2: Limi d imensions fr bols a nd n ts

ISO 7 13:19 4, A er ospa ce — B ols a nd s r ews,

metr ic — Toler a nc s o fr m a nd posiion

3 Config uration and dimensions

Se Fig ure 1 andTa le 1 Dimensions and

tolerances are ex res ed in mi imetres They are

a plca le after any sur ace coating , but before the

a plcation of any lubricant

Tolerances of form an position are specified in

ISO7 13

Fig ure 1

Ta le 1

Diam ete

co e

T r a a

D

1

D

2 D

3 D

4 D

5 D

6 D

7 D

8

nom

Co ted b lt

Unco ted

b lt

close larg e close larg e ± 0,5 min min ma

H1 b

H1 b

1,5

1,4

1,9

1,6

2,4

12 MJ1 × 1,25 – 4h6h 1

h1 b

f7 b

h1 b 7,7 9,8 13,7 20,9 2

3

3,8

+1

0

– ,010

– ,0 5

– ,013

– ,0 8

– ,016

– ,0 1

– ,020

– ,0 5

Ta le 1

Diam ete

co e

1 c

L

2

L

3

1

Wr nching

d sh

n m be d

s r ng th clas (MPa) shortm edium

min

h1 b

7 8,5 6,1

1

3,8 3,5 0

1,4

6,4 4,5 14

1,8

8,4 5,3 19

a

In conformiy wih ISO 5 5 -2,e ce t for the ma imum major diameter “d ” of b lts wih a close tolerance on D

1 ,which shal b

e ual to D

1 min – 0,0 5

b

Se ISO 2 6-2

c

Inc ements:

1 for L

1

u 3

2 for 3 < L

1

u 1 0

4 for L

1

> 1 0

If g re ter leng ths are re uired, the shal b chosen using these inc ements

d

In conformiy wih ISO 4 9 o er T min

0

–0,2 +0,4

0

b

B

BSI is the independent national bod y responsible for prep ring

BritishStand ard s It presents the UK v iew on stand ard s in Europe an at the

international lev el It is incorporated b Roy al Charter

Revisions

BritishStand ards are up ated b amendment or rev ision User of

BritishStand ard s should make sure that they pos es the latest amendments or

editions

It is the constant aim of BSI to improv e the qual ty of our products and serv ices

W e would be g rateful if any one find ing an inac uracy or ambig uity whi e using

this BritishStand rd would inform the Sec etary of the technical commit e

responsible, the identity of which can be fou d on the inside f ont cov er

Tel:0208 9 9 0 Fa :0208 9 7 0

BSI ofer member an indiv id ual up ating serv ice caled PLUS which ensures

that subs riber automaticaly receiv e the latest editions of stand rds

Buying standards

Order for al BSI, international an foreig n stand ard s publcations should be

a d res ed to Customer Serv ices Tel:0208 9 9 01 Fa :0208 9 7 01

In response to ord er for international stand rd s, it is BSI pol cy to sup ly the

BSI implementation of those that hav e be n publ shed as BritishStand rds,

unles otherwise requested

Inform ation on standards

BSI prov id es a wide rang e of information on national, European and

international stand rds throug h its Library and its Tech ical Help to Ex orter

Serv ice Various BSI electronic information serv ices are also av aia le which g iv e

d etais on al its prod ucts an serv ices Contact the Information Centre

Tel:0208 9 71 1 Fa :0208 9 7 4

Subs ribing member of BSI are kept up to d te with stand rd s dev elopments

and receiv e substantial d is ou ts on the pur hase price of stand rds For d etai s

of these and other benefits contact Member hip Ad ministration

Tel:0208 9 7 02 Fa :0208 9 7 01

Co yrig ht

Copy rig ht subsists in al BSI publcations BSI also holds the copy rig ht, in the

UK, of the publcations of the internationalstand rd ization bodies Except as

permit ed u der the Cop rig ht, Desig ns and Patents Act 19 8 no extract ma be

reproduced , stored in a retriev al sy stem or transmit ed in any form or b any

means – electronic, photocopy ing , recording or otherwise – without prior writ en

permis ion fom BSI

This do s not preclude the fe use, in the cour e of implementing the stand ard,

of neces ary detai s such as sy mbols, and siz , ty pe or g ra e d esig nations I these

d etais are to be used for any other purpose than implementation then the prior

writ en permis ion of BSI must be obtained

I permis ion is g ranted, the terms ma includ e roy alty p y ments or a lcensing

ag re ment Detais and a v ice can be obtained f om the Copy rig ht Manag er

Tel:0208 9 7 7