INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXQJYHAPOJJHAR OPTAHl43Al#lR l l0 CTAHflAPTM3A~MM Hand and machine operated circular[.]
IN TERN ATIO N AL S TAN D ARD IS 2568 Second edition 988-1 2-01 INTERNATIONAL ORGANIZATION ORGANISATION INTERNATIONALE MEXQJYHAPOJJHAR OPTAHl43Al#lR H an d an d an d m ach i n e-operated h an d -operated die ci rcu l ar FOR STANDARDIZATION DE NORMALISATION l-l0 CTAHflAPTM3A~MM screwi n g d i es stocks Fili&res rondes de filetage, r) main et B machine, et Porte-filikre rSmain Reference IS0 2568 number : 988 (E) IS0 2568 : 988 (E) Foreword I S0 ( th e n ati o n al I n tern ati on al stan d ard s Stan d ard s bod y is n o rm al l y i n te re ste d th e ri g h t m e n tal D raft th e to I S0 75 C o u n ci l % Th i s 993 U s e rs e d i ti o n a 2599 wi th by be fo re m em ber an y e d i ti o n , in can ce l s m i n or n ote an d revi si on an d th at re fe re n ce u n l ess I n t e rn at i on al Pri n te d l i s o n in was wo rl d wi d e of al s o te ch n i cal acco rd an ce fe d e rati o n pre pari n g co m m i tte e s h as I n te rn ati o n al part in as wi th th e are I n te rn ati on a! I S0 m em ber e stab l i sh e d o rg an i z ati o n s, take of I n tern ati on al E ach been co m m i tte e s acce ptan ce bo d i e s a co m m i tte e I SO, th e th e i r is work te ch n i cal co m m i tte e approved th e I S0 Th e te ch n i cal ad opted appro val are a th at in bo d i e s ) th rou g h wh i ch on I S0 respecti vel y, sh o u l d th at l ate st by S tan d ard se co n d an d Th ey S tan d ard i z ati o n ) h as g overn - work ci rcu l ate d to S tan d ard s by pro ce d u re s re q u i ri n g C o m m i tte e I S O/TC at voti n g prepared by Te ch n i cal 9, tools co n s ti tu te s an d fo r appro val I n te rn ati o n al Small ou t fo r S tan d ard s bod i es fo r m em ber carri e d su bj e ct re pre se n te d I n tern ati on al l e ast @ a (I S0 n on - g o ve rn m e n tal , m em ber th e in be an d Org an i z ati o n bo d i e s al l It a n ew cl au s e I n te rn ati o n al m ad e o th e rwi s e Or g a n i za t i o n S wi tz e rl an d re p l ace s th e fi rs t i n co rpo rate s h e re i n e d i ti o n “M arki n g ” S tan d ard s to (I S0 am e n d m e n ts an y oth e r h as u n d e rg o St a n d a rd i zat i o n , bee n 988 2, : 73 , of pu bl i sh e d wh i ch it in 977 to ti m e ad d ed re vi si on I n tern ati on al state d fo r 256 an d fro m S tan d ard ti m e i m pl i es i ts INTERNATIONAL Han d and and fi el d I n tern ati on al Stan dard establ i sh ed as ou tsi d e - th i ckn ess; - cu tti n g porti on - g en eral d i m en si on s al so g i ves I S0 th e coarse - fi n e - - i n ch of th read , from “U n i fi ed fi n e” g en eral i s appl i cabl e Ml Ml to to of an d h an d -operated pi tch , are th e an d m ach i n e-operated fol l owi n g screwi n g d i es Th ese : are seri es seri es of g i ven for (U N C) , (U N F) , of ci rcu l ar screwi n g d i es g u i d an ce Stan dard Wh i tworth ” - “Bri ti sh Stan dard Fi n e” B - “Bri ti sh Associ ati on ” are n on -preci si on preci si on h an d -operated screwi n g avai l abl e d i es die i n ten d ed stocks for th e m an u factu re of th e fol l owi n g th read s: on ly N o N o - d i es, th read s i n annex 64 SO to screwi n g for - as wh i ch B to Annex /2 31 - - a fu n cti on are not 4; of d eal t th read wi th B i s appl i cabl e to in d i am eters th i s screwi n g an d I n tern ati on al d i es for pi tch es, are Stan dard, i n ch th read s g i ven an d of th e in annex th erefore fol l owi n g A are n ot types: ( B S W) (BSFI (BA) in screwi n g screwi n g from from “Bri ti sh d i es to of MS6 - - d i am eter M6S; B l - d i m en si on s th read d i m en si on s ch aracteri sti cs d i m en si on s recom m en d ed , screwi n g g en eral th e th read s: coarse” Th e th e of attach m en t from “U n i fi ed d i m en si on al stocks th read s: th read , Th e d i es l en g th ; Stan dard m etri c I S0 speci fi es a fu n cti on i n terch an g eabi l i ty - - screwi n g d i am eter; I n tern ati on al - die ci rcu l ar 2568 : 988 (El of appl ication - Th i s Al l m ach i n e-operated h an d -operated d i m en si on s, It and Scope Th i s IS0 STANDARD two cl asses, n am el y d i es; d i es IS0 2568 : 988 (E) IS0 metric threads Screwing dies with: D A- A = 6and20mm D>2 m m & Fi g u r e 1 - M e t ri c sc rew i n g OSE d i e s Coarse thread Tabl e - - d nom De s i g n at i o n P i t c hI D a b - - I Dimensions in millimetres - Desi g n at i on M l M l Ml6 M l ,6 M l ,6 18 M l ,6 0,35 M2 M2,2 M2.5 2.5 Or4 M3 M3.5 3,5 0.5 0,6 M4 M4.5 4,5 0,7 0,75 16 5 M20 M5 I M7 24 27 02 M 24 22 M 22 M 22 3,5 I 0,4 In,“, I PitchI 12 ,75 14 16 18 20 2,5 M 27 - b a 36 45 8” -6522 20 - I 03 D I E C 25 M42 M 46 - 3,5 M 46 I 75 30 I 42 1 45 4,5 I f-f 48 - 8036 I M 52 62 I I - - 33 - -* For an Ml6 die, this dimension is an exception to the general table (table 6) given in annex A NOTES The shape of the V-groove is left to the discretion of the manufacturer Screwing dies are generally supplied with two chamfers at the thread entrance, according to the material to be threaded and at the discretion of the manufacturer Tolerances : - for precision screwing dies: - on f1 - onE: js1 - for non-precision screwing dies: - on and the tolerances are left to the discretion of the manufacturer D: D E: IS0 2 2568 : 988 (EI Fine thread Tabl e Di m en si on s i n mi l l i metres - d De s i g n at i o n I Pi t c l D b a - d De s i g n at i o n n om Pi t c h D n om M 30 x M 30 x M30 x M32 x M32 x -T E C b - I ,5 30 02 16 M33 x M33 x ,5 32 H I ,5 332 0.25 6! ,s 0,35 M 3.5 x 0.35 3.5 M x 0.5 M 4.5 x 0.5 4,5 M x 0.5 M 5,5 x 0.5 20 0,5 5.5 c - 0,75 - 25 ,8 - - 30 - - M42 x M42 x M42 x 3 42 , 25 - M42 x M45 x I ,5 M45 x 2 M45 x 3 M45 x 4 M48 x , 25 , 25 38 - 45 36 14 - - 36 l& l - I ,5 50 22 36 22 16 i I ,5 36 ,5 B 22 - - - 18 I ,8 I ,5 36 ,5 05 - 2, s - - Fo r an d th e in s h ape of th e V- g ro o ve an d th e to l e ran ce s , - - see n o tes 22 - I M56 x I M56 x I 36 IS0 2568 : 988 (EI IS0 inch Sc re w i n g d i e s th read s w i t h : A- A D = D>2 m m a n d Z Om m Fi g u r e “ U n i fi ed c o ars e ” s eri es - Sc re w i n g d i es U N C an d U N F WN C I Tabl e Di m en si on s i n m i l l i m etres I De s i g n at i o n I d n om Pi t c h I Z N o -5 - U N C I ,= I 0, 397 I N o -66 - U N C I 2, 84 I 0, 454 I N o -46 - U N C I 2, 51 I 0, 529 N o -46 - U N C I 45 N o -40 - U N C 3, 75 N o -32 - U N C 505 N o -32 - U N C 4, 66 794 -2 - U N C 4, 826 N o 12 -24 - U N C 5, 486 -2 - U N C I 6, 35 I l /4 5~6 - - U N C I 7, 938 I , 41 - - U N C I 9,525 I = 1 6- - U N C 1 ,1 , 81 1 - - U N C 2,7 , 954 I /w - - U N C I I /8 - 1 - U N C I 31 - - U N C I - - U N C - - U N C 4, 288 I I 5, 875 I 309 I 05 I 224 22, 225 I z= Q 25, c 2, 1 3, 75 1 /a - - U N C 28, 575 - - U N C 31 , 75 - - U N C 34,925 - - U N C a.1 233 - U N C 446 08 31 - 25 Or8 30 38 3, 629 18 55 65 ,5 25 - 41 /2-U N C 114 - 112 - 75 90 02 20 ,8 1 2 50 U N C 57.1 21 - - U N C 6385 231 - - U N C m a a 0, 45 1 31 b , 27 31 71 66 I 11 E , 058 I I 16 Dl = N o I D 5,644 05 23 6, 35 20 36 10 IS02558 3.2 “ U n i fi ed fi n e” seri es : 988 (E) WN F I Tabl e Di m en si on s i n m i l l i m etres d Pi t c h n om Z De s i g n at i o n D No - 80 - UNF , 524 0, 31 No - 72 - UNF , 854 0, 353 No - 64 - UNF 2, 84 0, 367 No - 56 - UNF 2, 51 0, 454 No - 48 - UNF , 45 0, 526 Dl E El C b a 16 11 3 ot5 NOTES Th e sh ape of th e V-g roove en tran ce, i s l eft to th e d i screti on of th e m an u factu rer Screwi n g d i es are g en eral l y su ppl i ed wi th two ch amfers at th e th read accord i n g to th e m ateri al to be th read ed an d at th e d i screti on of th e m an u factu rer Tol eran ces: - for preci si on screwi n g d i es: - on D: - on E: - fl j s1 for n on -preci si on screwi n g d i es: - on D an d E: th e tol eran ces are l eft to th e d i screti on of th e m an u factu rer IS0 (For 2568 : 988 (E) Di e stocks m etri c an d i n ch - Interchangeability di mensions th read s) For screwi n g For Fi g u re - Di e Tabl e stocks Di m en si on s i n m i l l i m etres 65 75 90 18 17 25 23 8, 2, m 18 30 28 22 m 0,7 36 34 7.7 58 M8 68 M8 82 M8 95 Ml 07 Ml0 0,7 05 im 221 20 36 34 1 7 22 20 36 34 7, d i es screwi n g wi th D d i es = wi th an d D 20 mm > 25 mm IS0 2558 : 988 (E) Marki ng 5.1 th e Screwi n g th read d i es for I S0 m etri c th read s, th e d i m en si on s of wh i ch form wi th th ose gi ven i n tabl es an d 2, sh al l of wh i ch be m arked wi th desi g n ati on Examples : A ci rcu l ar screwi n g die for coarse screwi n g di e for fi n e for I S0 I S0 m etri c th read s (for exam pl e Ml) sh al l be m arked as fol l ows: Ml A ci rcu l ar Ml2 x I S0 m e tri c th read s (for exam pl e Ml2 x , 251 sh al l be m arked as fol l ows: 25 5.2 Screwi n g th ose g i ven d i es in tabl es 3, 4, i n ch 7, th read s, an d 9, UNC sh al l be an d UNF m arked seri es wi th an d th e types th read B S W, BSF an d BA, th e d i m en si on s form wi th d esi g n ati on Examples : A screwi n g l /4 A - l /4 A 5.3 for - i n ch th read s, UNC seri es (for exam pl e 114 - i n ch th read s, UNF seri es (for exam pl e N o 201 , sh al l be m arked 281 , sh al l as fol l ows: I S0 12 - be m arked as fol l ows: UNF I S0 i n ch th read s, type BSW i n ch th read s, type BSF i n ch th read s, type BA (for exam pl e I /Z - 21 , sh al l be m arked as fol l ows: B SW die for 26 - screwi n g BA th e - for 28 - die screwi n g I S0 UNC - - - for die screwi n g l /2 A 26 screwi n g No A die I S0 (for exam pl e 114 - 261 , sh al l be m arked as fol l ows: B SF die for I S0 (for exam pl e N o 41 , sh al l be m arked as fol l ows: No Wh e re d i screti on tool s of com pl y th e in al l respects wi th th e rel evan t I n tern ati on al Stan d ards, th e sym bol I S0 m ay be appen ded to th e m ark at m an u factu rer ISO2588: 988(E) Annex G en eral tabl e of d i m en si on al for ( Th i s ch aracteri sti cs m etri c annex A form s an d an i n teg ral i n ch part of ci rcu l ar th read s of th e stan d ard ) screwi n g d i es IS0 Annex Ci rcu l ar screwi n g d i es for B n on-IS0 (This annex does not form an integral Screwing D= i n ch th read s part of the standard.) dies with: A-A 6and20mm D>25m m & Fi g u r e B l For “ Bri ti sh 2888 : 988 (E) Stand ard Wh i tworth ” - Sc re w i n g th read s d i es B S W, B SF an d OSE B A (B SW) Tabl e Di m en si on s i n m i l l i m etres IS0 2888 : 988 (E) 8.2 For “ Bri ti sh Standard Fine” threads (BSFI Tabl e Di m en si on s i n mi l l i m etres c E ‘ 0.8 a b 11 10 ! i /s - - 5,875 B SF , 81 I I /1 - - B SF 7,462 31 - - B SF 9,05 71 - 1 - B SF - - B SF I I I I I 22,225 25,4 l /9 - - B SF 28,575 1 74 - - B SF 31 , 75 31 - - B SF l /z - - B SF 38.1 5/a - - B SF 41 , 275 31 - - B SF - - B SF I I 114 - - B SF 112 - - B SF I I 34,925 45 55 22 65 25 2, 1 I I 2,309 2, = I - - B SF 3,1 75 75 30 90 38 05 36 44 45 3, 629 503 I 57, I 63, 4, 233 20 374 224 e= 10 36 NOTES Th e sh ape of th e V-g roove en tran ce, i s l eft to th e d i screti on of th e m an u factu rer Screwi n g Tol eran ces : - for preci si on screwi n g d i es: - on D: - on E‘ : j s1 - 10 f1 for n on -preci si on screwi n g d i es: - d i es are gen eral l y su ppl i ed wi th accord i n g to th e m ateri al to be th read ed an d at th e d i screti on of th e m an u factu rer on D an d E: th e tol eran ces are l eft to th e d i screti on of th e m an u factu rer two ch am fers at th e th read IS0 B For “ Bri ti sh Association” threads 2888 : 988 (E) (BA) Tabl e Di m en si on s i n m i l l i m etres De s i g n at i o n d Pi t c h D D, n om E ( E, C / b a - B A N o 0,2 B A N o ,2 0,2 B A N o ,3 0,2 B A N o 1 ,5 0,3 B A N o 1 ,7 2 11 0,3 NOTES Th e sh ape of th e V-g roove en tran ce, i s l eft to th e d i screti on of th e m an u factu rer Screwi n g d i es are g en eral l y su ppl i ed wi th two ch amfers at th e th read accord i n g to th e m ateri al to be th read ed an d at th e d i screti on of th e m an u factu rer Tol eran ces : - for preci si on screwi n g d i es: - - - o n D: on E: f1 j s1 for n on -preci si on screwi n g d i es: - on D an d E: th e tol eran ces are l eft to th e d i screti on of th e m an u factu rer 11 IS0 U DC 2568 : 988 (E) 621 992 Descri ptors : tool s, cu tti n g tool s, Pri ce based on 1 oaaes th read i n g d i es, m arki n g