Tiêu chuẩn iso 02284 2017

© ISO 2017 Hand taps for parallel and taper pipe threads — General dimensions and marking Tarauds à main pour filetages cylindrique et conique de tuyauterie — Dimensions générales et marquage INTERNAT[.]

Hand taps for paral el and taper pipe

mar king

Tara ds à main p ur fileta e s c ylindrique et co ique de tu a te ie —

Dimensions g n rale s et marq a e

Fourth edition

2 17-0

Refer ence n mb r

ISO 2 84:2 17(E)

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F reword i v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms an definitions 1

4 General dimensio s 1

5 Mar king 2

A nne x A (informative)Bases for calculatio of the dimensions 5

A nne x B (informative)Relatio ship betwe n desig nations in this document and the ISO 13399 ser ies

6 Biblog raphy 7

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www iso org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sponsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www iso org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

F or an ex lanation on the v lu tary natur of s an ards, the meaning of ISO spe if ic t erms an

ex r s ions r lat ed t o conformity as es ment, as wel as information a out ISO’ s adhe enc t o the

World Trade Org nization (WTO) principles in the Te hnical Bar ie s t o Trade (TBT) se the folowing

URL: www iso org iso / for word html

This document was pr p r d b Te h ical C mmitt ee ISO/TC 2 , Smal to ls , Subcommitt eeSC 9, To l s

w ith deined c ut in edges , c ut in items

This fourth edition canc ls an r plac s the third edition (ISO 2 84:1 8 ), of w hich it cons itut es a

minor r vision with the folowing chang es:

— ad ed An ex B giving the r lationship between the symb ls of this document an the symb ls

ac ording t o the ISO 1 3 9 se ies

Hand taps for paral el and taper pipe thr eads — General

This document pe ifies the g ene al dimensions an marking of han ta s for pipe thr ads

It isa plca le t o the two folowing ty es of ta :

— ta s for p ralel thr ads ( e Figur 1 an Ta le 1),

— ta s for ta e thr ads ( e Figur 2 an Ta le 2),

ha ing thr ads in ac ordanc with ISO 7-1 an ISO 2 8-1

Furthe mor , it gives in An ex A the b ses used for calculation of the dimensions, an in An ex B the

r lationship betwe n designations in this document an the ISO 1 3 9se ies

2 Normati ve r eferences

The folowing document ar r fe r d t o in the t ext in such a wa that some or al of their cont ent

cons itut es r q ir ment of this document F or dat ed r fe enc s, only the edition cit ed a ples F or

un at ed r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment ) a ples

ISO 2 7, Rotatin to l s w ith p ralel sh nk s — Diamete s o sha k s a d s i zes o dri v in s qu r s

ISO 5 6 , Gro nd thr ad ta s fr pipe thr ads G series a d Rp series — Tole a c es o the thr aded p rtio

3 Terms and definitions

No t erms an def initions ar lst ed in this document

ISO an IEC maintain t erminolo ical data ases for use in s an ardization at the folowing ad r s es:

— IECEle tro edia: a aia le at ht p:/ www ele tro edia org

— ISO Onlne brow sing plat orm:a ai a le at ht p:/ www iso org o p

4 General dimensions

The g ene al dimensions ar given in Ta le 1 and Ta le 2

Shank diamet ers an driving sq ar s shal conform t o the spe if ications given in ISO 2 7, the t ole anc s

being as folow s:

— on diamet er, d

1 :

h9 for pr cision shan s;

h1 for othe shan s;

— on width ac os flat , a:

h1 ;

h1 ( inclu ing e rors of form of the sq ar an of it p sition in r lation t o the shank)

5 Mar king

Ta s in ac ordanc with this document and with the r q ir ment of ISO 5 6 shal be marked, on the

shan , with the folowing in ications:

a) thelett er designating the thr ad se ies;

b) thedesignation of the thr ad

A G se ies p ralel thr ad ta with designation 3 4 shal be marked as folows:

G 3 4

An R p se ies p ralel thr ad ta with designation 1 4 shal be marked as folow s:

R p 1/4

An R c se ies ta e thr ad ta with designation 1 shal be marked as folow s:

Rc 1

Whe e t ools comply in al r spe t with the r lev nt Int ernational Stan ards, the symb l ISO ma be

a pended t o the mark at he disc etion of the man factur r

Figure 1 — Tap for paralel thre ds — G series and R p series

Table 1 — Taps for paralel thre ds — G series and R p series

Dimensions in milimetr es

Thr ad

designation

Numbe of

thr ads in

2 ,4 mm

d

nom

Pit ch

≈

d

1

h9

l

+ 2

–

L

Squar

a

h1

l

2

0,9 7

1,3 7

1,8 4

16

26

2,3 9

3 ,5

40

NO E The siz s shown in parentheses are to be avoided whenever pos ible

Figure 2 — Tap for tape thre ds — Rc series

Table 2 — Taps for tape thre ds — Rc series

Dimensions in milimetr es

Thr ad

designation

Numbe of

thr ads in

2 ,4 mm

d

nom

Pit ch

≈

d

1

h9

l

+ 2

–

L

l

1

ma

Squar

a

h1

l

2

0,9 7

1 ,1

1,3 7

1,8 4

2,3 9

A nne x A

Bases for calculation of the dimensions

A 1 General

This document has be n pr par d on the b sis of empirical formulae extract ed from s an ards an

exis ing practic in v rious countries, an b taking ISO 5 9 int o conside ation

A 2 Threaded leng th

The thr aded length consis s of the ent ering length an the ful thr ad length We the efor ha e

F ormula (A.1):

5 p + 3,0 d

0,5

(A.1)

The f irs t erm of this formula cor esp n s t o the ma imum ent ering length of thr ads

A 3 Shank leng th

The shank length consis s of the “ r e” length (out ide the ta holde )of the shank, that length sup osed

t o be a sorbed b the clamp of the ta ping machine an the length of the driving sq ar ; we the efor

ha e F ormula (A.2):

(6,3 d

0,45

) + (1 d

1 ,2

) + l

2

(A.2)

The firs t erm of this formula cor esp n s t o the fr e length, the se on t o the length a sorbed b the

clamp an the third t o the length of the sq ar

A nne x B

ISO 13399 series

F or the r lationship betwe n the designations in this document and pr fe r d symb ls ac ording t o the

ISO 1 3 9se ies, se Ta le B.1

Table B.1 — Relatio ship betwe n designatio s in this d cument and the ISO 13399 series

Symb l in this

document

R efe enc in

this document

Pro e ty name in

the ISO 1 3 9 se ies

Symb l in the

ISO 1 3 9 se ies

R efe enc in

the ISO 1 3 9 se ies

T re d

Ta le 1

Ta le 2

thre d diameter,

inch fraction

Numb r of

thre ds in

2 ,4 mm

Ta le 1

Ta le 2

d

1

Ta le 1

Ta le 2

con ection diameter

machine side

d

1

h9

Ta le 1

Ta le 2

t olerance clas con ection

diameter machine side

l

Ta le 1

Ta le 2

thre d cut ing part length THL 71E0 C 5BB9DA

L

Ta le 1

Ta le 2

Pit ch

Ta le 1

Ta le 2

Bibl og raphy

[1] ISO 7-1, Pipe thr ads whe e pr s s ure -tig t joints ar made o the thr ads — Part 1: Dimens io s ,

tole a ces a d des ig atio

[2] ISO 2 8-1, Pipe thr ads whe e pr s s ure -tig t joints ar n t made o the thr ads — Part 1:

Dimens ions,tole a c es a d des ig atio

[3] ISO 5 9, S ort machine ta s a d h nd ta s

[4 ] ISO 1 3 9(al p rt ), Cuttin to l data r pr s entatio a d excha ge

ICS  25.100.50

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