Bsi bs 2a 296 1995 (1999) iso 7913 1994

This British Stan ard,ha ing b en pre ared u der the directionof the Engine ring SectorBo rd, was publshed u derthe authority of the Stan ards Bo rd an comesintoefect on 1 Ju e 9 5 © BSI

ISO 7913:1994

Co firme

Octo er 2010

This British Stan ard,ha ing

b en pre ared u der the

directionof the Engine ring

SectorBo rd, was publshed

u derthe authority of the

Stan ards Bo rd an

comesintoefect on

1 Ju e 9 5

© BSI0 -1 9

Fir t publshed July1 8

Secon edition Ju e1 9

The folowing BSI references

relate to the work on this

stan ard:

Commite reference ACE/12

Draft for comment9 /70 3 4 DC

ISBN 0 5 0 2 0 3 8

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 fol owing bodies were represented:

British Industrial Fastener Federation

Ministry of Defence

Society of British Aerosp ce Comp nies Ltd

The Association of Electronic , Telecommu ications and Busines

EquipmentIndustries

Am endm ents is ued sinc publ cation

Pag e

National foreword

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

identical with ISO7 13:19 4, A er ospa ce–B olts a nd s r ews, metr ic — Toler a nc s

o fr m a nd posiion, publshed b the International Org anization for

Stand rdization ( ISO) It super edes BSA29 :19 6 which is withdrawn

Cros - referenc s The Tech ical Commit e has rev iewed the prov isions of

ISO1 01:19 3 and ISO26 2:19 8, to which normativ e reference is ma e in the

text, and has decided that they are ac epta le for use in conju ction with this

stand rd

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

Summ ary of pag es

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

p g es1to8, 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

Ta le 1 — Description and portra al

Ta le 1 — Description and portra al

5 Table 1 — Description and portray l

Ta le 1 — Description and portra al

Ta le 2 — Values

List of references

Se national foreword

ISO 7913:1994

BSI

3 9 Chiswick Hig h Roa

London

W 4 4AL

BSI is the independent national bod responsible for prep ring

BritishStand rds It presents the UK v iew on stand rds in Europe and at the

international lev el It is incorporated b Roy al Charter

Revisions

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

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

editions

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

W e would be g rateful if any one finding an inac uracy or ambig uity whie using

this BritishStand rd would inform the Sec etary of the tech ical 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 idual up ating serv ice cal ed PLUS which ensures

that subs riber automatical y receiv e the latest editions of stand rds

Buying standards

Order for al BSI, international and foreig n stand rds publ cations should be

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

In response to order for international stand rds, it is BSI polcy to sup ly the

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

u les otherwise requested

Inform ation on standards

BSI prov ides 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.V arious BSI electronic information serv ices are also av ai a le which g iv e

detai s on al its products and serv ices Contact the Information Centre

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

S bs ribing member ofBSI are kept up to d te with stand rds dev elopments

and receiv e substantial dis ou ts on the pur hase price of stand rds For detais

of these and other benefits contact Member hip Administration

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

Copyrig ht

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

UK, of the publcations of the international stand rdization bodies Except as

permit ed u der the Copy 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 f om BSI

This do s not preclude the f e use, in the cour e of implementing the stand rd,

of neces ary detais such as sy mbols, and siz , ty pe or g ra e desig nations.I these

detai s 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 include roy alty p y ments or a l censing

ag re ment Detai s and a v ice can be obtained fom the Cop rig ht Manag er

Tel:0208 9 7 7