Bsi bs a 309 1994 (2000) iso 9256 1993

BRITISH STANDARD BS A 309 1994 ISO 9256 1993 Bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or e[.]

Bolts, larg e hexag onal

U C 6 1.8 2.2 :6 9.7

This BritishStan ard,hav ing

b en pre ared u der the

directionof the Aerosp ce

Stan ards Polcy Commite ,

waspublshed u der the

authority f the Stan ards

Bo rdan comes into efect on

1 August1 9

© BSI0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

Commite reference ACE/12

Draft for comment 9 /79 3 DC

ISBN 0 5 0 2 2 3 9

The prep ration of this BritishStand rd was entrusted b the Aerosp ce

Stand rds Polcy Commit e ( ACE/-) to Tech ical Commit e ACE/ 12, upon

which the folowing bodies were represented:

The Association of Electronic , Telecommu ications and Busines

EquipmentIndustries

British Industrial Fastner Federation

Ministry of Defence

Society of British Aerosp ce Comp nies Ltd

Am endm ents is ued sinc publ cation

Pag e

Fig ure 1 — Config uration for diameter codes0 0 and0 0 2

Fig ure 2 — Config uration for diameter codes0 0 to0 0 2

© BSI 0 -2 0

This BritishStand rd has be n prep red u der the direction of the Aerosp ce

Stand rds Polcy Commit e It is identical with ISO925 :19 3 Aer ospa ce —

B olts, la r ge hexa gona l hea d , nor ma l o pich d ia meter sha nk, l ong l ength MJ

thr ea d s, meta l lic ma ter ia l, coa ted o u coa ted , str ength cla ss s les tha n o

equa lto1100MPa — D imensions publshed b the International Org anization

for Stand rdization ( ISO)

A British Stand rd do s not purport to include al the neces ary prov isions of a

contract User of British Stand rds are responsible for their cor ect a pl cation

Com pl anc with a British Standard do s not of itselfc nfer im munity

f om leg al obl g ations

Cros - referenc s

Inte national Stand rd Cor esp nding BritishStand rd

ISO28 -2:19 8 BS EN2028 ISO system o limi s a nd fis —

Part2:19 2 Ta bles o sta nd a r d tol er a nc gr a d es a nd

limi d evia tions fr holes a nd sha fts

( Identical

ISO3 5 :19 2 BS2A231:19 2 R oll ed thr ea d s f r bolts Lea d a nd

r unout r equir ements

( Identical

ISO5 5 -2:19 8 BS629 A er ospa ce MJ thr ea d s

Part2:19 4 Limi d imensions f r bolts a nd nuts

( Identical

Summ ary of pag es

This document comprises a font cov er, an inside f ont cov er, p g es i andi,

p g es1 to4, an inside b ck cov er and a b ck cov er

This stand rd has be n up ated ( se cop rig ht d te) and ma hav e ha

amendments incorporated.This wi be indicated in the amendment ta le on the

inside f ont cov er

1 Scope

This International Stand rd specifies the

dimensions of large hex g onal hea bolts, with

normal or pitch diameter shan , and long leng th

MJthrea s, in metal ic material, coated or

uncoated, with streng th clas es les than or equal

to110 MPa

It is intended for the drawing up of aerosp ce

product stand rds

2 Norm ative ref rences

The folowing stand rds contain prov isions which,

throug h reference in this text, constitute prov isions

of this International Stand rd At the time of

publ cation, the editions indicated were v al d All

stand rds 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 ity 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 al d International Stand rds

ISO28 -2:19 8, ISO system o limis a nd fi s —

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

limi d evia tions f r holes a nd sha fts

ISO3 5 :19 2, A er ospa ce — R ol led thr ea d s fr

bol ts— Lea d a nd r unout r equir ements

ISO5 5 -2:19 8, A er ospa ce — MJ thr ea d s —

Pa r t2: Limi d imensions f r bolts a nd nuts

3 Config uration and dim ensions

Se Fig ure 1 and Fig ure 2 and Ta le 1 Dimensions

and tolerances are ex pres ed in mi lmetres They

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

the a plcation of any lubricant

Detais of form not stated are left to the

man facturer’s dis retion

© BSI 0 -2 0

Fig ure 1 — Config uration for diameter c des0 0 and 0 0

NOT For other dimensions,se Figure 1

Fig ure 2 — Config uration for diam eter c des0 0 to0 0

Ta le 1

Diam ete

co e

T r a a

D

1

D

2

D

3

D

4 D

5 D

6

normal pitchdiameter

c

h1 c 2,6

± 0,13

1

± 0,5

1,4

Diam ete

co e

1 e

L

2 e

L

3

L

4 e

0,5

1 14 to42

± 0,3

0,4

7

h1 c

4

h13 c

0,7

0,7

1

a

In conformity with ISO5 5 -2

b

D

2

ma uactual S

c

Se ISO2 6-2

d

Fir t length,cor esp n ing to fir t L

4 length

e

Incements:

2 for L

4

u1 0

4 for L>1 0

If gre ter lengths are neces ary, the shal b chosen using these inc ements

f

Con itions L

1

min an L

2

ma can ot b o tained simultane usly

0

– 0,5

0

– 0,5

0

–0,3 0

–0,3

0

–0,3

0

–0,2

List ofreferences

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