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ISO INTERNATIONAL STANDARD. Hexalobular socket cheese head screws. Vis à métaux à tête cylindrique basse à six lobes internes - PDF Free Download
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1 INTERNATIONAL STANDARD ISO First edition Hexalobular socket cheese head screws Vis à métaux à tête cylindrique basse à six lobes internes Reference number ISO 14580:2001(E) ISO 2001
3 Foreword ISO (the Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Standard ISO was prepared by Technical Committee ISO/TC 2, Fasteners. ISO 2001 All rights reserved iii
5 INTERNATIONAL STANDARD ISO 14580:2001(E) Hexalobular socket cheese head screws 1 Scope This Standard specifies the characteristics of hexalobular socket cheese head screws in product grades A and with thread sizes from M2 up to and including M10. If, in special cases, specifications other than those listed in this Standard are required, they should be selected from existing Standards, for example ISO 261, ISO 888, ISO 898-1, ISO 965-2, ISO , ISO Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid Standards. ISO 225:1983, Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensions ISO 261:1998, ISO general-purpose metric screw threads General plan ISO 888:1976, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts ISO 898-1:1999, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs ISO 965-2:1998, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose external and internal screw threads Medium quality ISO 1207:1992, Slotted cheese head screws Product grade A ISO 3269:2000, Fasteners Acceptance inspection ISO :1997, Mechanical properties of corrosion-resistant stainless-steel fasteners Part 1: Bolts, screws and studs ISO 4042:1999, Fasteners Electroplated coatings ISO :2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO :1988, Fasteners Surface discontinuities Part 1: Bolts, screws and studs for general requirements ISO 8839:1986, Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals ISO 8992:1986, Fasteners General requirements for bolts, screws, studs and nuts ISO 10664:1999, Hexalobular internal driving feature for bolts and screws ISO 10683:2000, Fasteners Non-electrolytically applied zinc flake coatings ISO 2001 All rights reserved 1
6 3 Dimensions See Figure 1 and Table 1. Symbols and designations of dimensions, except dimension A, are specified in ISO 225. NOTE Shank diameter d s is approximately equal to pitch diameter or equal to major thread diameter. a b As-rolled end Edge may be rounded or flat Figure 1 2 ISO 2001 All rights reserved
7 Table 1 Dimensions Dimensions in millimetres Thread d M2 M2,5 M3 (M3,5) a M4 M5 M6 M8 M10 P b 0,4 0,45 0,5 0,6 0,7 0,8 1 1,25 1,5 a max. 0,8 0,9 1 1,2 1,4 1,6 2 2,5 3 b min nom. = max. 3,80 4,50 5,50 6,00 7,00 8,50 10,00 13,00 16,00 d k min. 3,62 4,32 5,32 5,82 6,78 8,28 9,78 12,73 15,73 d a max. 2,6 3,1 3,6 4,1 4,7 5,7 6,8 9,2 11,2 nom. = max. 1,55 1,85 2,40 2,60 3,10 3,65 4,40 5,80 6,90 k c min. 1,41 1,71 2,26 2,46 2,92 3,47 4,10 5,50 6,54 r max. 0,1 0,1 0,1 0,1 0,2 0,2 0,25 0,4 0,4 w min. 0,5 0,7 0,75 1,0 1,1 1,3 1,6 2 2,4 x max. 1,0 1,1 1,25 1,50 1,75 2,0 2,5 3,2 3,8 Socket No Hexalobular A ref. 1,75 2,4 2,8 3,35 3,95 4,5 5,6 7,95 8,95 socket max. 0,84 0,91 1,27 1,33 1,66 1,91 2,29 3,05 3,43 t min. 0,71 0,78 1,01 1,07 1,27 1,52 1,90 2,66 3,04 l d Approximate mass of carbon steel screws, in kilograms per pieces nom. a min. max. (H =7,85kg/dm 3 ) 3 2,8 3,2 0,160 0, ,76 4,24 0,179 0,302 0, ,76 5,24 0,198 0,332 0,560 0,786 1,09 6 5,76 6,24 0,217 0,362 0,604 0,845 1,17 2,06 8 7,71 8,29 0,254 0,422 0,692 0,966 1,33 2,30 3, ,71 10,29 0,291 0,482 0,780 1,08 1,47 2,55 3,92 7, ,65 12,35 0,329 0,542 0,868 1,20 1,63 2,80 4,27 8,49 14,6 (14) 13,65 14,35 0,365 0,602 0,956 1,32 1,79 3,05 4,62 9,13 15, ,65 16,35 0,402 0,662 1,04 1,44 1,95 3,30 4,98 9,77 16, ,58 20,42 0,478 0,782 1,22 1,68 2,25 3,78 5,69 11,0 18, ,58 25,42 0,932 1,44 1,98 2,64 4,40 6,56 12,6 21, ,58 30,42 1,66 2,28 3,02 5,02 7,45 14,2 23, ,5 35,5 2,57 3,41 5,62 8,25 15,8 26, ,5 40,5 3,80 6,25 9,20 17,4 28, ,5 45,5 6,88 10,0 18,9 31, ,5 50,5 7,50 10,9 20,6 33,6 (55) 54,4 55,6 11,8 22,1 36, ,4 60,6 12,7 23,7 38,6 (65) 64,4 65,6 25,2 41, ,4 70,6 26,8 43,6 (75) 74,4 75,6 28,3 46, ,4 80,6 29,8 48,6 NOTE Commercial lengths are the ones between the bold stepped lines a b c Sizes in parentheses should be avoided if possible. P pitch of the thread. The head height is increased as against the screws in accordance with ISO 1207 in order to improve the head strength. d Screws with nominal lengths above the dashed stepped line are threaded up to the head (b = l a). See ISO 888. ISO 2001 All rights reserved 3
8 4 Specifications and reference Standards See Table 2. Table 2 Specifications and reference Standards Material Steel Stainless steel Non-ferrous metal General requirements Thread Mechanical properties Tolerances Hexalobular socket Finish Surface discontinuities Standard Tolerance Standards Property class Standards Product grade Standard Standard ISO g ISO 261, ISO A2-50, A2-70 A3-50, A3-70 As agreed ISO ISO ISO 8839 A ISO ISO As processed Plain Plain Requirements for electroplating are covered in ISO Requirements for non-electrolytically applied zinc flake coatings are covered in ISO Limits for surface discontinuities are covered in ISO Requirements for electroplating are covered in ISO Acceptability For acceptance procedure, see ISO Designation EXAMPLE A hexalobular socket cheese head screw with thread M5, nominal length l = 20 mm and property class 4.8 is designated as follows: Hexalobular socket cheese head screw ISO M ISO 2001 All rights reserved