International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME~YHAPO~HAR OPTAHM3ALU4R l-l0 CTAH~APTM3Al UM~ORGANISATION Hexagon head bolts - Product grade (shank diameter = pitch diameter) Boulons tete hexagonale First edition - Classe de produit B - Tige reduite fdiamktre de tige = diamktre Reduced DE NORMALISATION shank sur flanc de filet) - 1979-07-01 U DC 621382.6 Descriptors B - INTERNATIONALE : fasteners, Ref No ISO 40151979 (E) bolts, hexagonal head bolts, specifications, dimensions Price based on pages FOREWORQ ISO (the International Organization for Standardization) is a worldwide federation of national Standards institutes (ISO member bodies) The work of developing International Standards is carried out through ISO 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 to the member bodies for Standards by the ISO Council adopted approval by the technical committees are circulated before their acceptance as International International Standard ISO 4815 was developed by Technical Committee lSO/TC 2, Fasteners, and was circulated to the member bodies in December 1977 lt has been approved by the member Australia Belgium Canada Chile Czechoslovakia Denmark Egypt, Arab Rep sf Finland Germany, F R The member bodies document on technical bodies sf the following following France United USSR @ International Printed Organization in Seitzerland countries expressed Kingdom for Standardization, 4979 : Poland Romania South Africa, Spain Sweden USA Y ugoslavia Hungary lndia Ireland Israel Korea, Rep of Mexico Netherlands New Zealand Norway of the grounds countries @ disapproval Rep of of the INTERNATIONAL ISO 4015-1979 (E) STANDARD Hexagon head bolts - Product grade (shank diameter = pitch diameter) INTRODUCTION This International product Standards series comprises : a) Hexagon ISO 4016) b) Hexagon Standard is part of the complete series on hexagon drive fasteners head bolts (ISO 4014, ISO 4015 ISO The d) Hexagon flanged bolts e) Hexagon flanged screws f) Hexagon flanged nuts g) Structural ISO 4033, Reduced shank If, in special cases, specifications other than those listed in this International Standard are required, it is recommended, that they should be selected from existing International Standards, for example ISO 261, ISO 888, ISO 898, ISO 965 and head screws (ISO 4017 and ISO 4018) nuts (ISO 4032, c) Hexagon ISO 4035 and ISO 4036) B - ISO 4034, REFERENCES ISO 261, ISO general General plan purpose metric screw ISO 888, Botts, screws and studs - Nominal thread lengths for general purpose bolts threads lengths, and , (in preparation) bolting ISO 898, Mechanical properties ISO 965, ISO general of fasteners purpose metric screw threads - Tolerantes SCOPE AND FIELD OF APPLICATION This International Standard gives specifications for hexagon head bolts with metric dimensions and thread diameters from up to and including 20 mm, with reduced shank (shank diameter x pitch diameter), of product grade B ISO 3506, Corrosion-resistan Specifica tions t stainless steel fasteners - ISO 475911, Tolerantes for fasteners - Part l : Bolts, screws and nuts with thread diameters > 1,6 < 150 mm and product grades A, B and C DIMENSIONS i The indentation and its shape are at the Option of the supplier unless specified by the customer ~ P max incomplete thread End without special demand d, = s - IT16 for width across flats < 21 mm dw - 0,95 s for width across flats >,21 mm An increase of d, up to d is permitted within a length of 0,5 d under the head Minimum wrenching height 0,7 k (see table) 88,2r 90 150 lengths Fm-_ nnminal Ipnnthc - s JC ” For nominal c,!) I! 1m the stepped 12 13 11 ! II 5,5 5,20 18 1 I 9,6 ,- I! I ! I ~- 6,64 IJ3 0,2 11 I ! T lines The size M14 should 17 > 125 and G 200 mm d 17!i mm I LV 111111 of the thread 3) ) p = pitch lengths ar e between 138 140 148 132 142 152 121,75 118,2! 128 130 Ill,75 120 101,75 98,2! 108,2! 100 91,75 81,5 71,5 110 1 68,5 78,5 Ob,3 70 80 56,5 61,5 m/5 l- 53,5 58,5 63,5 46,25 55 48,75 50 31,05 60 65 38,75 43,75 40 35 45 28,95 33,75 30 23,95 26,05 ma X S I r lt3 0.1 7,4 1! ! 29 be avoided 27,4 I 7,64 2,3 0.2 3,74 3,00 2,20 max 3,5 23 3,26 67 8,63 4,4 5,7 - 5,7 7,50 3,5 4,7 - Ib "fi W3 M5 2,60 484 5,98 14 OJ -A M4 1,80 I - 35 2,6 IZ 0,5 Am M3 nom min I x I I max 3) 31 LI 1) I d k’ k e %d de ref size 25 1‘he popular 1 t I I -7 I l b P Thread i 1 27 if possible 25 9,64 10 I 55,5 45,5 4U,5 20,5 1l I 23 43 58 48 12,57 13 16 71 61 51 41 36 I I 15,57 16 W A Ut4 n *r 19 74 64 54 44 39 6,69 6,ll 6,4 /,59 14,4 89 11,2 32 -26 lt5 MIO U,L3 33 5,54 5,3 5,06 14,zu 11,4 IIAA 7,1 92 28 -ZL! 1,25 M8 4,3 - - Z6 4,24 3,76 I U,UY 847 ah-* 5,3 63 Am 18 - M6 I 86,5 76,5 66,5 56,5 46,5 36,5 31,5 26,5 I 30 70 60 50 40 35 90 80 17,57 18 46 5,1 - - 7,79 7,21 7,5 16,4 -19,85 IO,7 13,7 36 30 1,75 M12 I I I 22 86 82 72 62 52 42 32 27 196 c -1 26 90 86 76 66 56 46 36 31 Formulae I 20,16 21 0,ti 9,09 8,51 83 19,2 -22Jts 12,5 15,7 40 34 (M14) I I 961 86 82 72 62 52 42 32 27 22 I I I I 14 83 73 69 59 49 39 29 19 - 19 Z, = Z, max - P 1 ref 70 74 64 54 44 34 24 188 I 29,16 30 - 03 8.5 12,85 12,15 12,5 27,7 -32,95 18,2 22,4 52 46 23 M20 in millimetres : Z, max = Z nom -b 921 82 78 68 58 48 38 28 23 18 23,16 24 U,6 68 II IO,29 9,71 10 22 -26,17 14,5 17,7 44 38 M16 Dimensions v) ISO 4015-1979 (E) SPECIFICATIONS AND REFERENCE STANDARDS Material Steel Stainless Tolerante steel Non-ferrous metal 69 Thread International ISO 261, Standards Classes Mechanical ISO 965 5.8 - 8.8 A2-70 ISO 89811 ISO 3506 properties International Product Standard ISO ‘) B grade Tolerantes International ISO 4759/1 Standard as processed Requirements Finish I Accepta bi 1ity 1) In preparation I for electroplating If different electroplating needed for other finishes suppl ier I plain are covered I plai n in ISO 1) requirements are desired they should be negotiated or if requirements are between customer and For acceptance procedure see ISO l) size d = MIZ, nominal length DESIGNATION Example for the designation class 8.8 : of a hexagon Hexagon head holt ISO 4015 M12 x head bolt 80-8.8 with thread I = 80 mm and property I ISO 4015-1979 (E) ANNEX This annex is included for explanatory and informative purposes only and is not to be considered as part of this International Standard This International Standard incorporates some changes, primarily in width across flats, from the previous metric practice in a number of countries These changes were made to achieve international agreement and to improve product design and utilization of material At its meeting in May 1977, ISO/TC studied several technical reports analysing design considerations influencing determination of the best series of widths across flats for hexagon bolts, screws and nuts A primary technical objective was to achieve a logical ratio between underhead bearing surface area (which determines the magnitude of TABLE Nominal thread diameter mm Table lists the ratios in substantial quantities TABLE bearing area across flats Thread Thread * size d I P stress area ” p2P 1 M14 1,7i-12 32 36 40 13 1,23 15 0,90 dw 16 1,30 e 17 1,73 18 0,91 19 IJ6 21 0,96 k’ 22 1,24 r 16 24 1,02 20 30 0,95 24 36 0,86 30 46 1,02 1) P = pitch of the thread 36 55 1,04 2) For nominal 3) For nominal lengths max 11,2 I Rs 83 I 13,5 I I 16,46 I I nom 12 max I I 14 ISO 273 (revised), lt5 M12 3) 1,44 holes 34 10 k MlO 30 26 1,08 based on clearance 15,3 18,72 13,7 I 15,7 I 10.7 I 12,5 I 17,l I 19,8 20,88 23,91 6,4 I 7,5 I 83 6,ll 7,21 8,51 6,69 7,79 9,09 5,1 60 4,3 I I T I 0,4 W I W max 15 17 19 22 14,57 16,57 18,48 21,16 S X medium of the world 2) * Calculation series by ISO/TC The four sizes (widths across flats of 15, 17,19 and 22 mm) will be phased out of production and use During a transitional period, to assist designers and manufacturers, and in particular to give needed information for maintenance and repair requirements, the dimensions of the four sizes are given in table mm the sizes selected in many countries 10 for to be ISO Standard (hold type) and in addition four sizes (light type) which currently are being produced and used Annular Width the compressive stress on the bolted members) and the tensile stress area of the screw thread (which governs the clamping forte which tan be developed by tightening the fastener) max lengths 3,8 I I 4,3 < 125 mm > 125 mm and G 200 mm I This page intentionally left blank