ISO 1891:1979

INTERNATIONAL STANDARD
NORME INTERNATIONALE
ME)fSflYHAPO~HbIi?i CTAHAAPT
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlONWlE)I(L1YHAPO~HAF OPrAHM3AL&lR fl0 CTAH,QAPTbl3A~VlM@ORGANlSATlON INTERNATIONALE DE NORMALISATION
- Terminology and nomenclature
Bolts, screws, nuts and accessories
First edition - 1979-12-15
Corrected and reprinted -
Vis, 6crous et accessoires - Terminologie et nomenclature
Premiere edition - 1979-12-15
Corrighe et Gmprimbe -
6OJlTbl, BHHTbl, kiKUl VI fleTaJlH KpNlJleHHFl - Tepwwonoruw
I
Id HOMeHKnaTypa
flepBoe wsaawe - 1979-12-15
McnpasneHo M nepeM3AaHo -
UDC/CDU/YJlK 621.882 : 001.4
Ref. No./Ref. no : IS0 1891-1979 (E/F/R)
Ccwntca No : MC0 1891-1979 (A/@/P)
Descriptors : fasteners, bolts, screws, nuts (fasteners), nomenclature/Descripteurs : &!ment de fixation, boulon, vis, krou, nomenclature/
OnHcaHHe : Kpenex, 6onTb1, BHHTbl, ral?KPl, HOMeHKJlaTYpa.
,Price based on 55 pages/Prix bag sur 55 pages/UeHa paccrmaHa Ha 55 cup.

---------------------- Page: 1 ----------------------
FOREWORD
IS0 (the International Organization for Standardization) is a worldwide federation of national
standards institues (IS0 member bodies). The work of developing International Standards is
carried out through IS0 technical committees. Every member body interested in a subject for
which a technical committee has been set up 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.
Draft International Standards adopted by the technical committees are circulated to the
member bodies for approval before their acceptance as International Standards by the IS0
Council.
International Standard IS0 1891 was developed by Technical Committee lSO/TC 2, Fasteners,
and was circulated to the member bodies in March 1977.
It has been approved by the member bodies of the following countries :
Australia Ireland Spain
Austria Italy Sweden
Japan Switzerland
Belgium
Bulgaria Mexico Turkey
Netherlands United Kingdom
Chile
Finland New Zealand USA
Norway USSR
France
Germany, F.R. Poland Yugoslavia
Romania
Hungary
South Africa, Rep. of
India
No member body expressed disapproval of the document.
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 inter-
nationales est confide aux comites techniques de I ’ISO. Chaque comite membre interesse par
une 6tude a le droit de faire partie du comite technique correspondant. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec I ’ISO, participent
egalement aux travaux.
Les projets de Normes internationales adopt& par les comites techniques sont soumis aux
comites membres pour approbation, avant leur acceptation comme Normes internationales
par le Conseil de I ’ISO.
La Norme internationale IS0 1891 a et6 elaboree par le comite technique lSO/TC 2, hments
de fixation, et a et6 soumise aux comites membres en mars 1977.
Les comites membres des pays suivants I ’ont approuvee :
Afrique du Sud, Rep. d’ Hongrie Roumanie
lnde Royaume-Uni
Allemagne, R.F.
Austral ie I rlande Suede
ltalie Su isse
Autriche
Belgique Japon Turquie
Bu lgarie Mexique U RSS
Chili Norvdge USA
Espagne _ Nouvelle-26lande Yougoslavie
Finlande Pays-Bas
France Pologne
Aucun comite membre ne I ’a desapprouvee.

---------------------- Page: 2 ----------------------
MC0 (MemnyHapont4afi OpratiM3auMfl no CTaHmpTM34WW) RBnReTcn BceMHpHoi;l *eAepauMek
Hal&HOHanbHblX OpraHOB n0 CTaHJ&apTH3aLJHH (KOMHTeTOB-WeHOB MCO). Pa3pa6OTKa MeMnyHa-
pOAHblX CTaHaapTOB OCy~eCTBnfleTCR TeXHHr(eCKHMH KOMHfelaMH MCO. Kamablti KOMHTeT-
r(neH, 3aHHTepeCOBaHHblii B AeRTenbHOCTH KaKOrO-nH60 TeXHHWCKOrO KOMHTeTa, HMeeT
flpaB0 yqaCTBOBaTb B er0 pa6oTax. npaBHTenbCTBeHHble H HeflpaBHTenbCTBeHHble MmnyHa-
pO&Hble OpraHlltsaum, COTpy~Hb4~alOllJlde C MCO, TaKme npHHblMalOT y ’4aCTHe B pa6oTax.
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oAO6peHMe BCeM KOMMTeTaMYneHaM.
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Me>KAyHapOAHblii CTaHAapT MC0 1891 6bln pa3pa6OTaH
977 roAa, pa3ocnaH KOMMTeTaM-WeHaM.
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OH 6bln OAO6peH KOMMTeTaMM-WleHaMM Cne&yIOLlWIx CTpaH :
Asctpan WR MTaJllrlR Typwm
@MHnFlHJWlFI
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6enbrwi tiHAepIIaH&bl @paHwlR
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HopBerm Ulseiiuapm
BeHrpm
repMaHm, @.P. llonbua UJsewlFl
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MpnaHAMFl CCCP Pecn.
mlOHMF1
VlcnaHm CUA
HH OAMH KOMMTeT-YneH He OTKnOHWl AOKyMeHT.
0 International Organization for Standardization, 1979 l
@ Organisation internationale de normalisation, 1979 l
0 Memaynapoanan OpraHwa~fmR no CraHMptwauw, 1979 l
Printed in Switzerland/lmprinG en Suisse/knano B MBeiiuapHH

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Page
CONTENTS
...............................
1 1
Scope and -field of application
.........................................
2
2 Screw threads.
........................................ 4
3 Shapes of heads.
........................................ 7
4 Forms of shank.
.....................................
8
5 Screw and bolt ends.
.......................................
6 Driving features. .I1
................................. .I4
7 Hexagon bolts and screws
..........................
. .' .I6
8 Hexagon socket head cap screws.
......................................
.I7
9 Square head bolts
.....................................
.I8
10 Triangle head bolts
.....................................
19
11 Octagonal head bolts
........................................ .20
12 12pointsCrews
.21
..........................................
13 T-head bolts
...................................... .22
14 Round head bolts
................................... .23
15 Countersunk flat bolts
.24
....................................
16 Slotted head screws.
................................
.27
17 Cross recessed head screws
............................
.28
18 Screws with captive components
.............................
.29
19 Miscellaneous bolts and screws.
Screwplugs.3 2
20
..3 3
21 Studs. .
.34
.......................................
22 Headless screws.
.35
........................
23 Slotted and hexagon socket set screws.
..................................... .37
24 Self-tapping screws
......................................... .39
Wood screws.
25
........................ .41
26 Thread cutting (metallic drive) screws.
............. .42
27 Thread forming screws (thread formed by deformation)
........................................ .43
28 Hexagon nuts.
.44
..........................................
29 Square nuts
.45
.........................................
30 Triangle nuts
.45
...............................
31 Octagon and pentagon nuts.
.46
............................
32 12 point nuts (bihexagonal nuts)
.46
...................................
33 Prevailing torque nuts.
.47
.....................................
34 Slotted castle nuts.
35 Capnuts.4 8
.49
.................................
36 Miscellaneous round nuts
.50
.................................
37 Other miscellaneous nuts
38 Washers.5 1
.52
.........................................
39 Spring washers
40 Tabwashers.5 4
.55
41 .
Split pins
iv

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TABLE DES MATHiRES Page
. 1 Objet et domaine d ’application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Filetages 2
.............................................
3 Formes de t&e 4
.........................................
4 Formes de tige 7
.........................................
5 Extremites de vis. 8
.......................................
6 Entra ’inement. .I1
........................................
7
Vis et boulons a tete hexagonale. .I4
............................
8 Vis a empreinte.
.I6
.......................................
9 Visatetecarree
...................................... ..I 7
10 Vis a tete triangulaire.
................................... .I8
11 Visa tete octogonale .I9
....................................
12 Vis a tete bihexagonale. .20
..................................
13 Vis a tete rectangulaire a angles abattus .2l
........................
14 Corps de boulon a tete ronde ou bombee. .22
......................
15 Corps de boulon a t&e fraisee .23
..............................
16 Vis a tete fendue.
.24
......................................
17 Vis a empreinte cruciforme
................................ .27
18 Vis a elements incorpores
................................. .28
19 Vis diverses
.29
..........................................
20 Bouchons filet&.
...................................... .32
21 Goujons.
.33
............................................
22 Vis sans t&e partiellement filetees
........................... -34
23 Vis sans t&e entierement filetees
............................ .35
24 Visatole.
.37
..........................................
25 Visabois.
.39
..........................................
26 Vis auto-taraudeuses par enlevement de matiere
.......... .’ ....... .41
+.27 Vis auto-taraudeuses par deformation de matiere.
................. .42
28 Ecrous hexagonaux .43
.....................................
29 Ecrous carres .4 4
........................................
I
30 Ecroustriangulaires. . . . . . . . . . . . . . . . . . . l . . . . . . . . . . . . . . . . .45
I
Ecrous octogonaux et pentagonaux.
31 . -45
Ecrous bihexagonaux.
32 .46
...................................
33 Ecrous auto-freines
..................................... .46
34 Ecrous a creneaux
...................................... .47
35 Ecrous borgnes .48
........................................
36 Ecrous ronds divers .49
.....................................
Autres ecrous divers.
37 .50
....................................
Rondelles.5 I
38
Rondelles elastiques.
39 .52
....................................
40 Freins d ’ecrou.
-54
........................................
41 Goupilles.
.55
...........................................

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CTP.
COAEPIKAHME
1 06beKT M 06naCTb npMMeHeHwl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 pe3b6a . 2
........................................
4
3 @OpMbl rOJlOBOK.
7
4 @OpMblCTep>i ..................................
8
5 KOHqbl6onTos M BMHTOB
..........................
.I1
6 3neMeHTbl, nepeaatotutie BpaueHwe
.............................. 14
7 kCTMrpaHHble 6onTbl M BldHTbl
.I6
......................
8 BkIHTbl C BHyTpeHHMM UleCTMrpaHHldKOM.
............................
-17
9 BWiTbl C KpanpaTHOi rOJlOBKOi?
............................
.I8
IO 60nTbl C TpeXrpaHHOti rOnOBKOk
......................... .I9
11 60nTbl C BOCbMMrpaHHOfi rOnOBKOti.
.......................
.20
12 60flTbi c fiBeHafiUaTMrpaHHOi? rOnOBKOi?
............................
.2I
13 6onTbl c T-o6pasHoti ronoBKo~
.
...........................
-22
14 6onTbl c rlonyKpyrnoi? ronosrto~
...........................
.23
15 60nTbl C flOTaiiHblMM rOnOBKaMl4.
...............................
24
16 BVlHTbl C llpFlMblM UUWl~eM.
.........................
-27
17 hHTbl C KpeCTOo6pa3HblM UJnMl&eM.
........................
.28
18 BklHTbl C HeBbIlla~atO~MlA AeTanFIMM.
..........................
-29
19 Pa3nWHble TWllbl 60nTOB M BMHTOB.
.....................................
-32
20 Pesb6oBble npo6KkI
...........................................
-33
21 uhlnbKl4.
....................................
.34
22 Pe3b6OBble llJTM(t)Tbl
.......................... .35
23 YCTaHOBO ’4Hble BMHTbl 6e3 rOnOBOK
.................................
-37
24 CaMOHa~3atOU.&le BMHTbl
............................................
-39
25 uypynbl
................................
.41
26 Pe3b6OHape3atOUNIe BMHTbl
.............................
.42
27 Pe3b6OBbl~aBnMBatO~tie BMHTbl
...................................
.43
28 UJecTwpaHHble raiiKi4
.....................................
.44
29 KBaapaTHble raiiKM
....................................
.45
30 TpexrpaHHble raGKt4
....................... .45
31 BOCbMMrpaHHble M nFlrMrpaHHble raiiKM.
................................
46
32 AseHanuaTvwpaHHble raGiKu
...............................
.46
33 CaMocTonopmwtecn raihKw
........................... .47
npOpe3Hble M KOpOHciaTble raiiKltl.
,34
....................................
.48
KonnaclKoBble raiAKM
35
.......................................
.49
36 Kpyrnbie rah4
...................................
.50
37 PasnwHble Tmbl raeK
38 ~a~6bl.5 1
.....................................
.52
39 npy)KMHHble UJaii6bl
.....................................
.54
40 CTOrlOpHble UJati6bl
41 UlnnMHTbl.5 5
vi

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INTERNATIONAL STANDARD _
IS0 18914979 (E/F/R)
NORME INTERNATIONALE
MC0 18914979 (A/@/P)
MEXAYHAPOJlHblm CTAHJJAPT
Bolts, screws, nuts and Vis, 6crous et accessoires - 6OJlTbl, BHHTbl, diKH H
accessories - Terminology Reranw KpenneHHfi -
Terminologie et nomen-
and nomenclature
clature TepMHHonorv!n M HOMeH-
Knarypa
1 SCOPE AND FIELD OF 1 OBJET ET DOMAINE 1 06bEKT M 06JlACTb
APPLICATION D ’APPLICATION IlPMMEHEHWl
This International Standard lays down La presente Norme internationale HacTo~~hi MemayHapoflHblfi CTaHJJapT
the terminology and nomenclature of fixe la terminologie et la nomen- npennaraeT TepMMHOnOrMtO M HOMeH-
bolts, screws, nuts and accessories in clature des vis, ecrous et accessoires, KnaTypy 6OnTOB, BMHTOB M AeTanek
English, French, Russian, German, en anglais, francais, russe, allemand, KpennetiMfi Ha aHrndicKoM, @paHuy3-
Italian and Spanish, recommended for italien et espagnol, recommandees CKOM, PyCCKOM, HeMeuKOM, MTanbFlH-
use unless otherwise specified in the pour I ’utilisation, sauf en cas de speci- CKOM M MCnaHCKOM Fl3blKaX, peKOMeH-
appropriate product standard. fication contraire, dans la norme de AOBaHHytO JJJlFI MCllOnb30BaHMFl, eCnL4
produit approprihe. TOnbKO TaKOBaFf He OrOBOpeHa Clle-
UlAanbHO B COOTBeTCTBytO~VlX CTaH&ap-
Tax Ha r43AenMfl.
Les pieces representees ne font que He Bee nepeqMcneHHbre KpenexHbre
At present, not all of the fasteners and
dans certains cas, pour I ’instant, M3Aenm M AeTanM Kpennetitifi 0xBaqeribi
accessories listed are covered by IS0
MC0 B HacTowee
For the main part, the I ’objet de normes ISO. Elles ont, pour ny6nMtca~MflMM
publications.
06beKTbl 6binM BblGpaHbl, B
I ’essentiel, ete selectionnees dans les BpeMFl.
items have been selected from existing
M3 Cyll&eCTBytO~MX
normes nationales existantes, ou 6onbureti YacTti,
national standards. Also included are
HauMOHanbHblX CTaHAapTOB. Bbltue&uJMe
encore figurent des pieces qui ne sont
obsolescent types (those being used up
~3 ynOTpe6fleHWI (HO MoryuMe 6blTb
plus d ’usage courant (en voie d ’epui-
from stock) in order that their
MCnOnb30BaHHblMM CO CKnaaOB) TMllbl
cela afin d ’en normaliser
terminology may be standardized at sement),
Kpenexa TaK)Ke BKnKNeHbI C TeM,
egalement la terminologie.
the same time.
‘m6bl MX TepMMHonorMR MOrna 6blTb
CTaHAapTM30BaHa OfiHOBpeMeHHO.
La representation des pieces est pure-
The drawings are essentially diagram- nPMBOfiMMble B CTaHaapTe IlepTeWl ll0
ment schematique, ceci particuliere- B YaCTHOCTM
matic, in particular those showing CyueCTBy CXeMaTMrlHbl;
ment pour les vis a caracteristiques
bolts and screws having special charac- KOTOpble OTHOCRTCFI K 60nTaM M
Te,
speciales, par exemple, incluses dans les BMHTaM, b4MetouwM cneyanbHble xapaK-
teristics dealt with, for example, in
clauses 18 and 19. However, it is chapitres 18 et 19. Cependant, il est TepMCTMKM M OTHOCFl~PleCFI K pa3aenaM
recommended that these drawings be recommande d ’utiliser, si possible, ces 20. TeM He MeHee, PeKOMeHayeTCFI,
19 M
used as a base whenever possible. figures comme base.
wO6bl 3TM ‘IepTexi4 6binM MCllOnb30BaHbl
B Ka ’leCTBe OCHOBbl nOBCtOay, r&e 3T0
B03MO)KHO. *
NOTE - Les termes equivalents en allemand,
NOTE - The equivalent terms in German, IlPMMEYAHME - 3KBMBaneHTHble TePMMHbl
italien et espagnol ont ete inclus a la
Italian and Spanish have been included at Ha HeMeUKOM, MTaJlbF1HCKOM M MCllaHCKOM
of Technical Committee demande du TC 2 et sont publies sous la
the request F13bl Kax BKfltOWHbl II0 npocb6e TexkrMrlecKoro
responsabilite des comites membres de
lSO/TC 2 and are published under the KoMMrera MCO/TK 2 II ny6nWytoTcn noA
I ’Allemagne, R.F. (DIN), de I ’ltalie (UNI) et
responsibility of the member bodies for OTBeTCTBeHHOCTb %leHOB OpraHkl3alWl rep-
de I ’Espagne (IRANOR), respectivement.
Germany, F.R. (DIN), Italy (UNI) andspain MaHMM, @.t?, (JJVlH), MTanMM (YHM) LI
Toutefois, seuls les termes don&s dans les
(I RANOR) respectively. However, only the knaHI4M (MPAHOP) COOTBeTCTBBHHO. OAHa-
trois langues officielles de I ’ISO (anglais,
terms given in the three official IS0 KO, TOJlbKO TepMMHbl, nplnBeAeHHble Ha TpeX
franqais et russe) peuvent etre consid&&
languages (English, French and Russian) can OC#Wl~L+laIlbHblX Fl3blKaX MC0 (iSHUWlikKOM,
comme termes ISO.
be considered as IS0 terms. C#IfDaHUY3CKOM M PYCCKOM) MOrYT CrlMTaTbCFi :
TePMMHaMM wco.
Ordre successif des langues
Successive order of languages : rlopRaOK cneLioBaHvm Fl3blKOB :
E : anglais E : aHrnr&ictW?
E : English
F : F : C/)paHlJy3CKl&i
F : French francais
R : russe R : pyCCKldi
R : Russian
D : allemand D : HeMeUKl&i
D : German
I : italien I : MTanbflHCKMi?
I : Italian
s : espagnol s : McnaHcKldl
s : Spanish

---------------------- Page: 7 ----------------------
IS0 1891-1979 (E/F/R)
MC0 1891-1979 (A/@/P)
2 SCREW THREADS
FILETAGES
PE3b6A
GEWINDE
FILETTATURE
ROSCAS
Designation
No.
Figure
Dhomination
NO
YepTem
HaHMeHoBaHHe
NO
E : screw thread
F : filetage cylindrique
R :
pesb6a
2.1 ,
D : Gewinde
I : filettatura
s : rosca cilindrica
E : taper screw thread
F : filetage conique
R :
KOHMWCKM pe3b6a
2.2
D : kegeliges (konisches) Gewinde
I
: filettatura conica
s : rosca con ica
E : tapping screw thread (spaced thread)
F :
filetage de vis a tale
R : caMoHape3atouafl pesb6a
2.3
D :
Blechschraubengewinde
I : filettatura autofilettante
s : rosca autorroscante
E : wood screw thread
F : filetage de vis a bois
R : tuypymaft pesb6a
2.4
D : Holzschraubengewinde
I :
filettatura per legno
s : rosca para madera

---------------------- Page: 8 ----------------------
IS0 1891-1979 (E/F/R)
MC0 18914979 (A/@/P)
Designation
No.
Figure
Dhominationt
NO
CtepTe=
tiaHMeHOBaHbde
NO
E : metric thread (SI)
F : filetage metrique (9)
R : MeTpmecKafi pesb6a
D : metrisches Gewinde
I : f i lettatu ra metrica
s : rosca metrica
E : IS0 metric thread
F :
filetage metrique IS0
R : MeTpMqecKaR pesb6a MC0
D : metrisches ISO-Gewinde
I : fiiettatura metrica IS0
s : rosca metrica IS0
E : metric fine pitch thread
F : filetage metrique a pas fin
R : n/reTpvvrecKafl pesb6a c MeJIKL ’lM UJarOM
D : metrisches Feingewinde
I : filettatura metrica a pass0 fine
s : rosca metrica fina
E : IS0 metric fine pitch thread
F : filetage metrique IS0 a pas fin
R : Me-rptiuecKaa pe3b6a MC0 c MenKMM UlarOM
D : metrisches ISO-Feingewinde
I : filettatura metrica IS0 a pass0 fine
Nut
s : rosca metrica fina IS0
E : inch th read
F : filetage en inch
R : JJKli?MOBEWl pesb6a
2.5
D : Zollgewinde
I : filettatura in pollici
s : rosca en pulgadas
60JlT
E : unified screw thread (IS0 inch)
F : filetage IS0 en inch (filetage UN)
R : YHM$Wl~MPOBaHHaFl ~H)MMOBWl peab6a
D : ISO-Zollgewinde (UN-Gewinde)
I : filettatura IS0 in pollici (filettatura UN)
s :
rosca unificada (UN)
E : Whitworth thread
F : filetage Whitworth
R : pesb6a BWTBOpTa
D : Whitworth-Gewinde
I : filettatura Whitworth
s : rosca gas Whitworth
E : pipe thread
F :
filetage au pas du gaz
R :
Tpy6I-M pesb6a
D : Rohrgewinde
I :
filettatura gas
rosca gas
s :
E : Whitworth pipe thread
F : filetage Whitworth (filetage au pas du gaz)
R :
Tpy6Hafl pesb6a BMTBopTa
D : Whitworth-Rohrgewinde (Gasrohrgewinde)
I : filettatura Whitworth per tubi (filettatura gas)
s : rosca gas (Whitworth)
3

---------------------- Page: 9 ----------------------
IS0 1891-1979 (E/F/R)
MC0 1891-l 979 (A/@/P)
.
3 SHAPES OF HEADS
FORMES DE TeTE
@OPMbl rOJlOBOK
KOPFFORMEN
FORME DI TESTA
FORMAS DE CABEZA
Designation
No.
Figure
Dhomination
NO
qeprem
HamleHoBaHlde
NO
E : hexagon head
F : tete hexagonale
R : uJecTr4rpatiHan ronoBKa
3.1
D : Sechskantkopf
I : testa esagonale
s : cabeza exagonal
E : hexagon head with washer face
F : t&e hexagonale a collerette
R : UJeCTMrpaHHaFl rOJlOBKa C OflOpHblM llO~rOJIOBKOM
3.2
D : Sechskantkopf mit Telleransatz
I : testa esagonale con collarino
s : cabeza exagonal con collarin
E : hexagon head with collar
F : tete hexagonale 5 embase cylindrique
R : UJecTMrpaHHaFl ronoBKa c ~WlMH~pM~eCKMM GypTON
3.3
D : Sechskantkopf mit Bund
I : testa esagonale con collarino
s : cabeza exagonal con collar
E : hexagon head with flange
F : tete hexagonale a embase cylindro-tronconique
,-
R : UJeCTMrpaHHaFI rOnOBKa CO CKOUJeHHblM 6ypToM
/ \
- .-. w
3.4 t
\ ‘/
D : Sechskantkopf mit Flansch (Flanschkopf)
I : testa esagonale con flangia
*@
cabeza exagonal con collar biselado
s :
E : square head
F : tete carree
R : qeTb[pexrpaHHafl ronoBKa
3.5
D : Vierkantkopf
I : testa quadra
s : cabeza cuadrada
square head with collar
E :
F : tete carree a embase cylindrique
R :
r(eTblpexrpaHHaFI ronowa c 6ypTOM
3.6
D : Vierkantkopf mit Bund
I : testa quadra con bordino
s : cabeza cuadrada con collar

---------------------- Page: 10 ----------------------
IS0 18914979 (E/F/R)
MC0 18914979 (A/@/P)
Designation
No.
Figure
Dhomination
NO
Yeprem
HaHMeHoBaHHe
NO
. .
: t&e triangulaire 5 embase cylindrique
i ; ;;;;;;;f;;;;;;: 6ypToM
a-1 @
3.7
: testa triangolare con bordino
s : cabeza triangular con collar
s : cabeza octagonal
E : 12 point flange head (bihexagonal
head)
F : tete bihexagonale
R : flseHapluamrpawiafl ronowa
Zwiilfzahnkopf
D :
I : testa biesagonale
s : cabeza de martillo
3,11
3.12
s : cabeza abombada
I
: testa cilindrica
s : cabeza cilindrica
5

---------------------- Page: 11 ----------------------
IS0 18914979 (E/F/R)
MC0 1891-1979 (A/@/P)
.
Designation
No.
Figure
Dbnomination
NO
YepTe>K
i=kiHMeHosaHHe
L
raised cheese head (fiilister head)
testa cilindrica con calotta
.
s : cabeza ciiindrica abombada
: t&e cylindrique a depouille; tete cyiindrique plate
qmm~pvwecKan mpyrnetwafl ronowa
i i iic:if(z:n head)
3A5 . @@
s : cabeza ciiindrica redondeada
: countersunk head (fiat head)
3.16
I : testa svasata piana
s : cabeza avelianada
L
raised countersunk head (oval head)
3.17
cabeza aveilanada abombada
s :
3.18
testa ciiindrica ridotta con ca!otta
cabeza ciiindrica baja abombada
undercut countersunk head (undercut flat head)
testa svasata con spailamento
t6te fraisee bombee a epaulement
nonynoTakia~ ronowa c 3annewimoM
: abgesetzter Linsensenkkopf
I : testa svasata con calotta e spallamento
s : cabeza aveilanada abombada con apoyo
6

---------------------- Page: 12 ----------------------
IS0 1891-1979 (E/F/R)
MC0 1891-1979 (A/@/P)
4 FORMS OF SHANK
FORMES DE TIGE
@OPMbl CTEPXHER
SCHAFTFORMEN
FORME DI GAMBO
FORMAS DE VASTAGO
Designation
No.
Figure
Dhnomination
NO
Y epTem
HaHMeHOBaHHe
NO
E : normal shank (nominal shank diameter =
nominal thread diameter)
4.1
I : gambo normale (diametro della parte
liscia = diametro esterno del filetto)
s : vastago normal (forma cortada)
E : reduced shank
* effective pitch diameter)
(shank diameter
tige reduite (diametre de la partie
lisse = diametre sur flancs de filets)
4.2
I : gambo ridotto (diametro della parte
liscia m diametro media del filetto)
s : vastago normal (rosca iaminada)
E : waisted shank (shank diameter < minor diameter)
4.3
I : gambo ridotto (diametro del
gambo < diametro del nocciolo)
s : vastago reducido (diametro de cafia
< que el diametro de nucleo)
: increased shank (shank diameter > thread
Q:--, 6 : fdifri%Lble
4.4
: AMaMeTp CTePXHFI > AMaMeTpa pe3b6bl
: ParJschaft (Schaftdurchmesser mit Pal3sitz)
I : gambo calibrate
4.5
: gambo calibrate rinforzato
s : vastago con cafia de apoyo
E : square neck
F :
tige a collet carre
R : CTepXeHb C KBaApaTHblM
4.6
nOAl-OAOBKOM
D : Schaft mit Vierkant
I : gambo con quadro sottotesta
s : vastago con cuello cuadrado

---------------------- Page: 13 ----------------------
IS0 1891-1979 (E/F/R)
MC0 1891-1979 (A/@/P)
.
5 SCREW AND BOLT ENDS
EXTRiMlTiS DE VIS
KOH4bl60JlTOB M BMHTOB
SCHRAUBENENDEN
ESTREMITA VITI
EXTREMOS DE TORNILLOS
Designation
No.
Figure
Dhomination
NO
Y eprem
tiaHMeHOBaHHe
NO
Ends for general use (5.1 to 5.3)
Pour usage general (5.1 a 5.3)
KOHubl o6uero npvwetieHm
E : as-rolled end
5.1
,-Yr+
F : bout plat
R : nnocwli? KOHeU
+----3
D : ohne Kuppe
estremita piana non iavorata
I :
extremo plan0
s :
E : rounded end
F : bout bomb6
R : CKpyrJleHHbli? KOHeU
,frr
5.2
D : Linsenkuppe
I : estremita bombata
s : extremo abombado
E :
chamfered end
F:
bout chanfreine
R : KOHeu C @aCKOii
-fY+
5.3
D : Kegel kuppe
I : estremita smussata
s : extremo biselado
Ends for special purposes (5.4 to 5.10)
Pour usages speciaux (5.4 a 5.10)
KOH~bl cneuanbHor0 npwvIeHeHm
E : cone point
F : bout pointu
5.4
KOHM ‘leCKMti KOHeU
R :
D : Spi tze
t-----l,
I : estremita a punta
extremo conic0
s :
E : truncated cone point
F : bout pilote
R : KOHMrleCKMti npVlTynJleHHbli? KOHeU
5.5
D : Spitze, abgeflacht
I : estremita tronco conica
extremo tronco-conic0
s :
8

---------------------- Page: 14 ----------------------
IS0 18914979 (E/F/R)
MC0 18914979 (A/@/P)
s Designation
No.
Figure
Dhomination
NO
LlepTem
Ha~MeHOBaHHe
N
Normal cup point
: KOHeU C BHyTPeHHMM KOHyCOM (3aCBefXleHHblii)
5.6
W cup point
D : Ringschneide
Cuvette en W
I : estremiti a coppa
W-06pa3Hblh KOHYC
s : extremo biselado hueco
short dog point
E :
F : Won court
R : yKOpO ’leHHblti IJVUWlH~fWlYeCKM~ KOHell,
5.7
D : Kernansatz
I : estremita cilindrica ridotta
s : extremo con pivote
E : long dog point
F : Won long
R : ~MJlMH~PMWCKMti KOHeu
5.8
D : Zapfen
I : estremita cilindrica
extremo con pivote largo
s :
E :
short dog point with rounded end
F : t&on court bomb6
3aKpyrJleHHblfi KOHeq
R :
5.9
D : Ansatzkuppe
I : estremita cilindrica bombata
s : extremo con pivote abombado
E : short dog point with truncated cone end
F : teton tronconique
CTylleHWTblti KOHeu
R :
5.10
D : Ansatzspitze, abgef lacht
I : estremita cilindrica tronco conica
s : extremo con pivote de punta tronco-conica
E : scrape point
F : bout tronconique de vis a tale (hauteur de filet
constante)
R : KOHell CXMOHape3aKl~erO BMHTa KOHM ‘leCKMi? C
5.11
IlpMTynneHMeM
D : Schneidschraubenende mit Schabenut
I estremiti tronco-conica per viti autofilettanti
s : extremo de tornillo autorroscante (entrada
tronco-conica)
E : end for self-tapping screw (tapping screw type
AB point)
F : bout pointu de vis 5 tale
R : KOHeU CaMOHape3aKNlJerO BMHTB KOHHYeCKMi?
D : Blechschrauben-Spitze
I : estremiti a punta
s : extremo de tornillo autorroscante tipo ‘AB
9

---------------------- Page: 15 ----------------------
IS0 1891-1979 (E/F/R)
MC0 1891-1979 (A/@/P)
.
Designation
No.
Figure
Dhomination
NO
YepTex
HaHMeHOBaHHe
N
7,
E : end for self-tapping screw (tapping screw type
B point)
F : bout plat de vis 5 tale
R : KoHeu caMoHapesatouer0 f3MHTa nnocKr4iA
5.13 D : Blechschrauben-Zapfen
I : estremiti piana
extremo de tornillo autorroscante tipo B
s :
E : end for thread rolling screw (thread formed by
deformation)
bout de vis auto-taraudeuse par deformation de
KOHeu pe36OBbl~aBJWlBatO~erO BMHTa
D : Gewindeformendes Schraubenende
I : estremita a sezione triangolare
s : extremidad de section trilobular
10

---------------------- Page: 16 ----------------------
IS0 1891-1979 (E/F/R)
MC0 18914979 (A/@/P)
6 DRIVING FEATURES
ENTRAiNEMENT
XlEMEHTbl, flEPE,QAH)uME BPAlllEHME
ANTRIEBSFORMEN
TRASCINAMENTO
FORMAS PARA ACCIONAMIENTO .
Designation
No.
Figure
Dhomination
NO
ClepTeM
NO HaHMeHOBaHide
E : hexagon
F : hexagonal
R :
UJeCTMrpaHHMK
6.1
D : Sechskant
I : esagonale
s : exagonal
E : square
F : carre
R : WTbIpeXrpaHHMK (KBaApaT)
6.2
D : Vierkant
I : quadro
cuadrado
s :
E : triangle
F : triangulaire
R : TPeXrPaHHMK
6.3
D : Dreikant
I : triangolare
s : triangular
E : octagon
F: octagonal
+
/ *\
R : BOCbMMrPaHHMK
---
-+
6.4
\ /
+J D : Achtkant
EF
8.
I : ottagonale
s : octagonal
E : 12 point (bihexagon)
F : bihexagonal
.\
/ R : ABeHaAl@TVlrpaHHl4K
_ _ .
6.5 -t
\ * /
D : Zwolfzahn
@
I : biesagonale
s : dodecagonal o bi-exagonal
E : hexagon socket
F :
six pans
...