ISO 225:1983

INTERNATIONAL STANDARD
NORME INTERNATIONALE
MEXflYHAPOAHblh CTAHflAPT
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME)I(~YHAPO~HAR OPrAHWALWlR fl0 CTAH~APT~3ALWlMWRGANISATION INTERNATIONALE DE NORMALISATION
Fasteners - Bolts, screws, studs and nuts -
Symbols and designations of dimensions
Second edition - 1983-11-01
Corrected and reprinted - 1992-07-15
- Vis, goujons et ecrous -
Elements de fixation
Symboles et dhignations des dimensions
Deuxieme Edition - 1983-11-01
Corrigee et rkimprimee - 1992-07-15
60Jllbl, BHHTbl, UlllMJlbK~ M &iKPl -
/JeTam Kpennetiuifi -
CHMBOJlbl Id o603tiaretiwI pa3MepOB
bopoe wnatwe - 1983-11-01
McnpasneHo u nepeneqaTaH0 - 1992-07-15
~~~~
UDWCDUIYJJK 621.882.2/.3 Ref. No./Ref. no : ISO 2254983 (E/F/R)
EC
ize
CCbUlKa NO: MC0 225-1983 (A/@/P)
20
-
33
: fasteners, bolts, screws, studs, nuts (fasteners), dimensioning, dimensions, Symbols, designation. / Descripteurs : Mment de
Descriptors
aiz
-
krou, cotation, dimension, Symbole, designation. /necKpbmTopbl : AeTanM
fixation, vis partiellement filethe, vis entierement filetee, goujon,
&
KpenneHm, 60nTbl, raIhKM, pe3b6bl, llJnWlbKM, kl3MepeHMe JWlHelhHOe, pa3Mep, 0603HaWHMR, HaMMeHOBaHMe.
33
Price based on 19 pages/Prix base sur 19 pages/UeHa paccrM-raHa Ha 19 CTP.

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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national
Standards bodies (ISO member bedies). The work of developing International Standards is car-
ried out through ISO technical committees. Every member body interested in a subject for which
a technical committee has been authorized has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take
part in the work.
the member
Draft Inter national Standards adopted by the technical committees are circulated to
bodies for approval before their acceptance as Interna tional Standards by the ISO Council.
Committee ISO/TC 2, Fasteners,
International Standard ISO 225 was developed by Technical
and was circulated to the member bodies in December 1981.
lt has been approved by the member bodies of the following countries :
Australia France New Zealand
Austria Germany, F. R. Norway
Hungary Romania
Belgium
Brazil India South Africa, Rep. of
Ireland Spain
Canada
China Italy Sri Lanka
Japan Sweden
Czechoslova kia
Denmark Korea, Rep. of Switzerland
Egypt, Arab Rep. of Mexico United Kingdom
Finland Netherlands USSR
body of the following country expressed disapproval of the document on technical
The member
grounds :
USA
This second edition cancels and replaces the first edition (i.e. ISO 225-1976).
Avant-propos
L ’ISO (Organisation internationale de normalisation) est une federation mondiale d ’organismes
nationaux de normalisation (comites membres de I ’ISO). L ’elaboration des Normes internationa-
les est confiee aux comites techniques de I ’ISO. Chaque comite membre interesse par une etude
a Ie droit de faire Partie du comite technique correspondant. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec I ’ISO, participent egalement aux tra-
vaux.
Les projets de Normes internationales adoptes par les comites techniques sont soumis aux comi-
tes membres pour approbation, avant leur acceptation comme Normes internationales par Ie
Conseil de I ’ISO.
La Norme internationale ISO 225 a etc ela boree par Ie comite technique ISO/TC 2, Elbmen ts de
fixa tion, e t a etc soumise aux CO lmites membres en decembre 1981.
Les comites membres des pays suivants I ’ont approuvee :
Afrique du Sud, Rep. d’ Egypte, Rep. arabe d’ Norvege
Allemagne, R. F. Espagne Nouvelle-Zelande
Finlande
Australie Pays-Bas
Autriche France Roumanie
Belgique Hongrie Royaume-Uni
Bresil Inde Sri Lanka
Canada Irlande Suede
Chine Italie Suisse
Corde, Rep. de Japon Tchecoslovaquie
Danemark Mexique URSS
Le comite membre du pays suivant I ’a desapprouvee pour des raisons techniques :
USA
Cette deuxieme Edition annule et remplace Ia Premiere edition (ISO 225-1976).
ii

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BBeAeHble
MC0 (MeqyHapoAHafl Opratii43aym no CTati~apTt43aq~~) mnfle-fcfl BceMHpHoL71 @eAepaQHeti
HaqMOHaflbHblX OpraHM3auL ’lti l-l0 CTaHflapTi ’l3a~Wl (KOMMTeTOB-WeHOB MCO). AeflTenbHOCTb I-IO
pa3pa60TKe MeqyHapO~HbIX CTaHflapTOB llpOBO~klTCfl TeXHM~eCKMMM KOMMTeTaMM WO. Kam-
flblfi KOMMTeT-WleH, 3aPlHTepeCOBaHHblfi B AeflTeJlbHOCTPl, AnFl KOTOpOL/I 6bln CO3AaH TeXHkl-
qeCKl4lil KOMMTeT, MMeeT npaB0 6blTb npeACTaBneHHblM B 3TOM KOMMTeTe. MeIKAyHapOAHble llpa-
BMTenbCTBeHHble M HerlpaBPlTenbCTBeHHble OpraHM3a4MM, MMetOoiqPle CBfI3M C L/1co, TaKme llpkl-
HMMalOT ylraCTl4e B pa6OTaX.
npOeKTbl Me>K~yHapO/JHblX CTaHAapTOB, IlpMHFITble TeXHM~eCKMMM KOMMTeTaMM, paCCblnalOTCFI
KOMMTeTaM-qneHaM Ha OAO6petiMe IlepejJ MX yTBepIK#eHL ’leM COBeTOM MC0 B KacleCTBe MexAy-
HapOAHblX CTaHAapTOB.
apOflHblti CTaHAapT MC0 225 6bln pa3pa60TaI-i TexH met KMM klCO/TK 2,
MeWYH
Aemanu K~WIneWFi, M pa3OCnaH KOMMTeTaM- ‘4neHaM B AeKa6pe 1981 rofla
OH 6bln oAo6peH KOMMTeTaMM-qneHaMM Cne~ytOl.Qklx CTpaH :
AeCTpanWI KaHaAbl @eAepaTtiBHoM PecnyGnmw
ABCTPMM KMTafl repMaHMM
6enbrvm KopeM, Pecny6nmw @MHnfIH~MM
MeKCMKM
6pa3mw @paHgMM
BeHrpMM HPlJJepnaHjqoB UlBeMqapm4
~aHMM HOBOM 3enaHAm ulBe~l4l4
ErmTa t-iopeerm uJpl4 JlaHKa
MH~MM PyMblHMM qexocnoBaKm4
Coe~PlHeHHoro DXHO-A@pnKaHCKOti
MpnaHAm
McnaHm KOpOneBCTBa Pecny6nww
CCCP FlrlOHMM
LlTanw
AOKyMeHT 6bln OTKnOHeH n0 TeXHMqeCKMM llpl4WlHaM KOMMTeTOM-qJleHOM CneAylOwe@l CTpaHbl :
CUJA
HacTofiyee BTopoe wc(aHtde aHHynMpyeT M 3aMeHneT nepeoe MsfiaHMe (MC0 2254976).
0 International Organkation for Standardkation, 1983 l
0 Organisation internationale de normalisation, 1983 l
0 Mem~ytiapo~tiafl Opranbf3aqm no CTan~aprb43aqbtbt, 1983 l
Printed in Switzerland/ Imprime en SuissehlsflaHo B IlleeGqapMti
. . .
Ill

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INTERNATIONAL STANDARD
ISO 2254983 (E/F/R)
NORME INTERNATIONALE
MC0 225-1983 (A/@/P)
MEX~YHAPO~Hblül CTAHAAPT
Elements de fixation - AeTanb4 Kpennewm -
Fasteners - Bolts,
60JlTbl, BHHTbl, UlllWlbKH H
Vis, goujons et ecrous -
screws, studs and
raihw - CHMBOllbl H
Symboles et designations
Symbols and
nuts -
0603HaWIiHFI paJnnepOB
des dimensions
designations of
dimensions
Objet et domaine 06 ’beKT u o6nacTb
1 Scope and field
npoMeHeHb4~
d ’application
of application
La presente Norme internationale definit Ia HaCTofIqMM MemJJyHapOAH bl ti CTaHJJapT
This International Standard lays down
yCTaHaBfll4BaeT MeToJj 0npefleneHm pas-
methode de cotation des vis, goujons et
the method of dimensioning bolts,
ecrous, d ’usage recommande, sauf specifi- Mepos 6on~os, BMHTOB, um4neK M raeK,
screws, studs and nuts, recommended
cation contraire figurant dans les normes
PeKOMeHAOBaHHbllil AJlFl flpMMeHeHMfI, 3a
for use unless otherwise specified in the
de produit. MCKJltO ’deHMeM ApyrVlX MeTOAOB, yCTaHOB-
appropriate product Standards.
fleHHblX B COOTBeTCTBylOllQAX CTaHAapTaX
communs et decrit
common Symbols and Elle inclut les Symboles Ha npOfiyKqMl0.
lt includes
feature. I ’element.
describes the
OH CO#epNWlT 06bNHble C MMBOJlbl M OrlM-
NOTES caHMe AeTaneW.
NOTES
1) Les figures d ’elements de fixation figurant
1) The figures of the fasteners in this Inter-
national Standard are only examples. dans Ia presente Norme internationale ne sont
donnees qu ’a titre d ’exemples.
1) Vl306pamekWr AeraneM KpenneHMFt npMr30-
2) In addition to terms used in the three of-
MWKAyHapOC\HOM CTaH-
/jFlTCFl B HaCTORqeM
2) En Supplement aux designations des dimen-
ficial ISO languages (English, French and
Aap-re r3 Kaqecrr3e npr4Mepoe.
Russian), this International Standard gives sions donnees dans les trois langues officielles
de I ’ISO (anglais, francais, russe), Ia presente
the equivalent terms in German, Italian and
2) B ~OllOJltieWle K 0603HaWHMRM pa3MepOB Ha
Spanish; these have been included at the re- Norme internationale donne les designations
TpeX OC#Wll#lanbHblX F13blKaX MC0 (aHrnMtiCKOM,
ISO Technical Committee Äquivalentes en allemand, italien et espagnol.
quest of
C#IpaH~yJCKOM M PYCCKOM) HaCTOfiqMI;i MexflyHa-
ISO/TC 2 and are published under the Ces designations ont etc incluses a Ia demande
POJjHbll;il CTaHAapT llPMBO~MT 3KBMBaJleHTHble
du Comite technique ISO/TC 2, et sont publiees
responsibility of the member bodies for Ger-
0603HaWHW Ha HeMeqKOM, MTan bRHCKOM M
many, F.R. (DIN), Italy (UNI) and Spain sous Ia responsabilite des comites membres de
MCllaHCKOM fI3blKaX. 3TM 0603Ha~eHMfl BKnD
(IRANOR). However, only the terms given in I ’Allemagne, R.F. (DIN), de I ’ltalie (UNI) et de
npocb6e -kxiiL+ieCKOrO ttOMMTE!Ta
qE?Hbl no
I ’Espagne (1 RANOR). Toutefois, seules les desi-
the official languages tan be considered as
VlCO/TK 2, M ny6JlPlKylOTCfl I-IOA OTBeTCTBeH-
ISO terms. gnations donnees dans les langues officielles
HOCTb KOMMTeTOB-WeHOB @e/iJepaTklBHOti PeCny-
peuvent etre considerees comme designations
6nMKM repMaHI&I (AMH), MTanw (YHVl) M Mcna-
Successive Order of languages :
ISO.
HMM (VlPAHOP). OAHaKO, TOnbKO 0603HaWHMR Ha
E: English TpeX OC#Nl~ManbHblX F13blKaX MOryT C ’dMTaTbCR
Ordre successif des langues :
F: French
0603HaWHMflMM MCO.
R: Russian E: anglais
flOPRAOK F13blKOB :
F: francais
D: German
I : Italian R: russe
E:
ari rn r4 MCKM rii
s: Spanish D: allemand
F: C.&IaH L(Y3CKM r;i
I : italien
R: PYCCKM r;i
s: espagnol
D: HeMeqKl4 r;i
I : MTan bFlHCKM#
ItlcnaHcKlAM
s:
CCblJlKH
2 References References
MC0 3508, Cxod pesb6br &R aemaneü
ISO 3508, Thread run-outs for fasteners ISO 3508, Filets incomplets pour /es ele-
with thread in accordance with /SO 261 ments de fixa tion avec un fletage selon KpenneHun c pe3b6oÜ B coomßemcmßuu c
MC0 267 u MC0 262.
and ISO 262. /SO 267 et /SO 262.
ISO 4753, Fasteners - Ends of Parts I SO 4753, &Jemen ts de fixa tion - Extremi- MC0 4753, Aemanu KpenneHu/r - KOHLJbl
demaneü c riapyxkioü MempuYecKoü
with external metric /SO thread. tes des elements a fietage exterieur metri-
pe3b6oü MCO.
que ISO.
ISO 4755, Fasteners - Thread under-
MC0 4755, Aemanu KpenneHuH - Pesb-
Cuts for external metric ISO threads. ISO 4755, Elements de fixa tion - Gorges
de degagement pour elemen ts a filetage 60Bble npomoYrtu dnH demaneü c Hapyx-
exterieur me trique ISO. rioü MempuYecKoü pesb60Ü MCO.

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ISO 225-1983 (E/F/R)
MC0 225-1983 (A/@/P)
3 Bolts, screws and studs Vis et goujons 60IlTbl, BHHTbl H UJflWlbKH
For thread run-out, see ISO 3508. Pour les filets incomplets, voir ISO 3508. ,@m HellOJlHblX pe3b6, CM. MC0 3508.
3.1 Hexagon head products Elements 5 tiite hexagonale nerank c LuecTMrpaHHow rOJlOBKOii
X
Reduced shank
(shank diameter- = pitch diameter)
Tige rbduite
Full shank (diametre de tige = diametre sur flancs)
Tige normale YTOHeHH bl ii CTepXeH b
Hopman bH bl ii CTepXeH b
(AMaMeTp CTePXHR = AMaMeTPY pe3b6bl)
Figure 1
PHCYHOK 1
2

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ISO 225-1983 (E/F/R)
MC0 2254983 (A/@/P)
BHHT C UJeCTWpaHHoii rOJlOBKOi
Vis 6 t&e hexagonale 5 embase
3.2 Hexagon head screw
cylindro-tronconique CO CKOUEHH blM 6yp~0~
with flange
Figure 2
PHCYHOK 2
3

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ISO 2254983 (E/F/R)
MC0 2254983 (A/@/P)
3.3 Hexagon socket head cap
Vis a t&e 5 six pans creux hiTbl C rOllOBKOti C WCTHrPaHHblM
screws yrny6neH b!eM
3.3.1 Cylindrical heads Tete cylindrique
T
-
aJ
b”
+
/
@
Figure 3
PHCYHOK 3
3.3.2 Countersunk heads T&e f rais6e
Figure 4
PHCYHOK 4

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ISO 225-1983 (E/F/R)
MC0 2254983 (A/@/p)
3.4 Slotted and Cross recessed Vis A t&e fendue et ZI empreinte BHHTbl C nonynoTai&ioii ronosKofi H
KpeCTOO6pa3H bl M
head screws cruciforme UJJI H l@M
Figure 5
PHCYHOK 5
5
-EL--
Figure 6
PHCYHOK 6
f 1
----t-
Figure 7
PHCYHOK 7
7
-~-~- --- --
I /K
,-----
1
f
1
- c-
Figure 8
PHCYHOK 8
5

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ISO 225-1983 (E/F/R)
MC0 2251983 (A/@/P)
iillWlbKH
3.5 Studs Goujons
I~POTO~KM, CM. MC0 4755
For thread undercuts, see ISO 4755. Pour les gorges de degagement,
voir ISO 4755.
nut end
metal end
extremite cot6 implantation extrkmite ch5 ecrou
KOHeLJ K rathe
KOHeu, K MeTaJUly
Figure 9
PHCYHOK 9
YCTaHOBOrH ble BHHTbl
36 . Set screws Vis sans t&e entierement filetees
Figure 10
PHCYHOK 10

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ISO 2251983 (E/F/R)
MC0 2251983 (A/@/P)
3.7 Thread ends (points)
ExtrGmitbs de filetage (bouts) OKOHWHHFI pe3b6bl (KOHqbl)
For bolt and screw ends, Pour les extremitk de filetage de vis, voir /$lFl OKOHWHML(1 pe3b6bl 6OnTOB
see ISO 4753. M BPlHTOB, CM. L/1co 4753.
ISO 4753.
Normal thread ends
Extremit6s normales
tiOpManbHble OKOHL(aHMFI
-~-
u u
1 1
m i
Rounded end As-rolled end
Chamfered end
Bout chanfreine Bout bombe Brut de roulage
KoHeq c @acKoH CKpyUleHH bl ii KOtleq HaKaTaHH bl ii KOHel(
Figure 11
PHCYHOK 11
Flat Point Dog Point Cup Point
(chamfered Point) (short or long dog Point)
Bout plat T6ton Bout cuvette
(chanfreine) (teton tourt ou tkton lang)
Bblcryn
flJlOCKb4 # KOHeq KoHeq C BHyTPeHHHM KOHyCOM
(c cpacKOI;i) (yKOPOW?HHbllil MflM Y~JlMHeHHblti)
1
r n
6
1
C
-h -
1
*@i 1
q$
z
1
1
q
Cone Point . Truncated cone Point Scrape Point
Bout tronconique Bout autonettoyeur
Bout pointeau
KOHbWeCKHii KOHeq k#HWieCKHii IlpblTyflJleHHblii KOHelJ KOHeq camoHape3aw~erocR Bb4HTa
c npblTynJleHl4em
Figure 12
PHCYHOK 12

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2251983 [EIFIR)
MC0 2251983 (A/@/P)
Designation
Symbol
Designation
Symbole
Onb4caw4e
CHMBOJl
E: distance from the last full form thread to the bearing face (screws)
F: distance du dernier filet complet a Ia face d ’appui
R: PaCCTOflHW OT nOCJle&HerO IlOnHOrO BMTKa pe3b6bl AO OnOpHOfi nOBepXHOCTl4
a
D: Abstand des letzten vollen Gewindeganges von der Auflagefläche
I : distanza tra I ’ultimo filetto completo e Ia faccia d ’appoggio sotto testa
s: distancia desde el ultimo hilo completo a Ia cara de apoyo del tornillo
E: thread length
F: longueur filetee
R: #nwia pe3b6bl
b
D: Gewindelänge
I : lunghezza filettata
Iongitud roscada
s:
...