1、October 2009DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.060.10; 21.060.30!$Z
2、)p“1550677www.din.deDDIN EN ISO 10644Screw and washer assemblies made of steel with plain washers Washer hardness classes 200 HV and 300 HV (ISO 10644:2009)English version of DIN EN ISO 10644:2009-10Kombi-Schrauben aus Stahl mit flachen Scheiben Hrteklassen der Scheiben 200 HV und 300 HV (ISO 10644:
3、2009)Englische Fassung DIN EN ISO 10644:2009-10SupersedesDIN EN ISO 10644:1998-10www.beuth.deDocument comprises pages1 42 National foreword This standard has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Fasteners” (Secretariat: DIN,
4、Germany). The responsible German body involved in its preparation was the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee), Technical Committee NA 067-03-01 AA Verbindungselemente mit Auengewinde. The DIN Standards corresponding to the International Standards referred
5、to in this document are as follows: ISO 898-1 DIN EN ISO 898-1 ISO 1207 DIN EN ISO 1207 ISO 1580 DIN EN ISO 1580 ISO 4014 DIN EN ISO 4014 ISO 4015 DIN EN 24015 ISO 4017 DIN EN ISO 4017 ISO 4042 DIN EN ISO 4042 ISO 4762 DIN EN ISO 4762 ISO 7045 DIN EN ISO 7045 ISO 10673 DIN EN ISO 10673 ISO 10683 DIN
6、 EN ISO 10683 ISO 14579 DIN EN ISO 14579 ISO 14583 DIN EN ISO 14583 ISO 15071 DIN EN 1662 (ISO 15071, modified) ISO 15072 DIN EN 14219 (ISO 15072, modified) Amendments This standard differs from DIN EN ISO 10644:1998-10 as follows: a) Clause 5 “Screw and washer combinations” has been extended. b) Cl
7、ause 6 “Coatings” has been added. c) Annex A “Methods for the production of screw and captive washer assemblies” has been added. Previous editions DIN 6900-1: 1966-09, 1972-12, 1990-12 DIN EN ISO 10644: 1998-10 DIN EN ISO 10644:2009-10 3 National Annex NA (informative) Bibliography DIN EN 1662, Hexa
8、gon bolts with flange, small series DIN EN 14219, Hexagon bolts with flange with metric fine pitch thread Small series DIN EN 24015, Hexagon head bolts with reduced shank (shank diameter pitch diameter) Product grade B DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and all
9、oy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread DIN EN ISO 1207, Slotted cheese head screws Product grade A DIN EN ISO 1580, Slotted pan head screws Product grade A DIN EN ISO 4014, Hexagon head bolts Product grades A and B DIN EN ISO 4017
10、, Hexagon head screws Product grades A and B DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN ISO 4762, Hexagon socket head cap screws DIN EN ISO 7045, Pan head screws with type H or type Z cross recess Product grade A DIN EN ISO 10673, Plain washers for screw and washer assemblies Small, no
11、rmal and large series Product grade A DIN EN ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings DIN EN ISO 14579, Hexalobular socket head cap screws DIN EN ISO 14583, Hexalobular socket pan head screws DIN EN ISO 10644:2009-10 4 This page is intentionally blank DIN EN ISO 10644:20
12、09-10 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 10644July 2009ICS 21.060.30 Supersedes EN ISO 10644:1998 English VersionScrew and washer assemblies made of steel with plain washers- Washer hardness classes 200 HV and 300 HV 10644:2009)Vis en acier rondelle plate incorpore - Rondelles dec
13、lasses de duret 200 HV et 300 HV (ISO 10644:2009)Kombi-Schrauben aus Stahl mit flachen Scheiben -Hrteklassen der Scheiben 200 HV und 300 HV 10644:2009)This European Standard was approved by CEN on 20 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
14、the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists i
15、n three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies o
16、f Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN C
17、OMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 10644:2009: E(ISO(ISO2 Contents Pag
18、e DIN EN ISO 10644:2009-10 EN ISO 10644:2009 (E) Foreword .3 1 Scope4 2 Normative references4 3 Dimensions 5 4 Specifications and reference International Standards7 5 Screw and washer combinations.7 6 Coatings .8 7 Designation 8 Annex A (informative) Methods for the production of screw and captive w
19、asher assemblies 10 3 Foreword This document (EN ISO 10644:2009) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by DIN. This European Standard shall be given the status of a national stan
20、dard, either by publication of an identical text or by endorsement, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights
21、. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10644:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standa
22、rd: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. E
23、ndorsement notice The text of ISO 10644:2009 has been approved by CEN as EN ISO 10644:2009 without any modification. DIN EN ISO 10644:2009-10 EN ISO 10644:2009 (E) 1 Scope This International Standard specifies the requirements for metric screw and plain washer assemblies made of steel with coarse th
24、read M2 to M12 inclusive, flat seating heads, property classes up to and including 10.9 and washer hardness classes 200 HV or 300 HV. The plain washers are captive, i.e. prevented from disassembly and free to rotate. NOTE The manufacturing of screw and washer assemblies takes into consideration mate
25、rial and production procedure of screw blank and washer as well as the assembly process of components, in order to meet specification requirements (see Annex A). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, on
26、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and
27、 fine pitch thread ISO 1207, Slotted cheese head screws Product grade A ISO 1580, Slotted pan head screws Product grade A ISO 4014, Hexagon head bolts Product grades A and B ISO 4015, Hexagon head bolts Product grade B Reduced shank (shank diameter approximately equal to pitch diameter) ISO 4017, He
28、xagon head screws Product grades A and B ISO 4042, Fasteners Electroplated coatings ISO 4762, Hexagon socket head cap screws ISO 7045, Pan head screws with type H or type Z cross recess Product grade A ISO 9717, Phosphate conversion coatings for metals Method of specifying requirements ISO 10673, Pl
29、ain washers for screw and washer assemblies Small, normal and large series Product grade A ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 14579, Hexalobular socket head cap screws DIN EN ISO 10644:2009-10 EN ISO 10644:2009 (E) 4ISO 14583, Hexalobular socket pan head screws
30、 ISO 15071, Hexagon bolts with flange Small series Product grade A ISO 15072, Hexagon bolts with flange with metric fine pitch thread Small series Product grade A 3 Dimensions The dimensions of plain washers shall be in accordance with ISO 10673. The dimensions of the assembled screws shall conform
31、to those of loose parts, i.e. ISO 1207, ISO 1580, ISO 4014, ISO 4015, ISO 4017, ISO 4762, ISO 7045, ISO 14579, ISO 14583, ISO 15071, ISO 15072, with the following exceptions: Bolts and screws shall have a reduced shank of such diameter, ds, that the washer with dimensions in accordance with ISO 1067
32、3 is free to rotate. NOTE ds pitch diameter. The maximum distance from the underside of the head to the commencement of full thread is increased by an amount necessary to accommodate the washer thickness for those products which are approximately threaded to the washer. For examples of screw and was
33、her assemblies, see Figures 1 and 2. Figure 1 Screw threaded up to the washer Figure 2 Screw with shank The transition diameter, da, as specified in the reference International Standards (see Table 3) shall be reduced by an amount equivalent to the difference between the nominal diameter, d, and pit
34、ch diameter to create the transition diameter, da1(see Figure 3 and Table 1). The curvature under head, as specified in the ISO International Standards for loose parts, shall not be changed. 5DIN EN ISO 10644:2009-10 EN ISO 10644:2009 (E) Figure 3 Transition diameter, da1, and shank diameter, dsTabl
35、e 1 Dimensions of transition diameter Dimensions in millimetres Dimensions of plain washerscSmall series Normal series Large series ThreadaType S Type N Type L (Nominal thread diameter) d abda1h d2h d2h d2max. max. nom. max. nom. max. nom. max. M2 2,4 0,6 4,5 0,6 5 0,6 6 M2,5 2,8 0,6 5 0,6 6 0,6 8 M
36、3 3,3 0,6 6 0,6 7 0,8 9 (M3,5) 3,7 0,8 7 0,8 8 0,8 11 M4 4,3 0,8 8 0,8 9 1 12 M5 5,2 1 9 1 10 1 15 M6 6,2 1,6 11 1,6 12 1,6 18 M8 8,4 1,6 15 1,6 16 2 24 M10 10,2 2 18 2 20 2,5 30 M12 2Pd12,6 2 20 2,5 24 3 37 aSizes in parentheses should be avoided. bMaximum distance from the underside of the washer
37、to the commencement of the first full thread with the washer in contact with the screw bearing face or underhead radius, when measured using a faced-off, i.e. unchamfered, ring gauge, see Figure 1. cDimensions extracted from ISO 10673 for information only. dP is the pitch of the thread. DIN EN ISO 1
38、0644:2009-10 EN ISO 10644:2009 (E) 6 In the case of hexagon head screws, the alternative underhead configuration with undercut (type U) may be used by agreement between the supplier and the purchaser, see Figure 4 and Table 2. aSmooth transition. Figure 4 Alternative underhead configuration, type U
39、Table 2 Type U dimensions Dimensions in millimetres Thread d M3 M4 M5 M6 M8 M10 M12 da2max. 3,6 4,7 5,7 6,8 9,2 11,2 13,7 r min. 0,1 0,2 0,2 0,25 0,4 0,4 0,6 max. 0,20 0,25 0,25 0,30 0,4 0,4 0,5 v min. 0,05 0,05 0,05 0,05 0,1 0,1 0,1 NOTE For other dimensions, see Table 1. 4 Specifications and refer
40、ence International Standards The components of screw and washer assemblies shall satisfy the material and mechanical property requirements specified in the respective product International Standards in the finished condition. For referee purposes, in case of dispute, testing of the mechanical proper
41、ties in accordance with ISO 898-1 shall be carried out with the washer component removed. The hardness classes of the washers used for screw and washer assemblies shall be as follows: property class of screw u 8.8: hardness class of washer 200 HV or 300 HV in accordance with ISO 10673; property clas
42、s of screw 9.8 and 10.9: hardness class of washer 300 HV in accordance with ISO 10673. NOTE The washer hardness class of the finished products can be obtained with the production methods described in Annex A. 5 Screw and washer combinations The standardized combinations of screws and washers and the
43、 symbols to be used for the components are given in Table 3. Washers with minimum internal diameter, d1, assembled with screws with maximum transition diameter, da1, may cause interference between washer and underhead radius. In that case, contact traces at the underhead radius may appear and the to
44、rque/clamp load performance may be affected. 7DIN EN ISO 10644:2009-10 EN ISO 10644:2009 (E) In order to avoid interference and contact traces, the use of screws with head type U or chamfered washers is recommended. Table 3 Combinations of screws and washers Symbols Screw WasheraType S N L Reference
45、 International Standard Symbol Symbol S Symbol N Symbol L ISO 4017 S1 x x ISO 4014bS2 x x ISO 7045 S3 x x ISO 4762 S4 x x x ISO 1580 S5 x x ISO 1207 S6 x x x ISO 14579 S10 x x x ISO 14583 S11 x x ISO 15071 S12 x x ISO 15072 S13 x x aIn accordance with ISO 10673. bBolts in accordance with ISO 4014 wi
46、th reduced shank according to Clause 3 will be similar to bolts in accordance with ISO 4015. 6 Coatings Coatings shall be in accordance with ISO 4042 for electroplated coatings, ISO 10683 for non-electroplated zinc flake coatings and ISO 9717 for phosphate conversion coatings. Agreement may be made
47、between the manufacturer and the purchaser on other types of coatings. 7 Designation The designation of a screw and washer assembly shall consist of the following: the description of the component; reference to this International Standard, i.e. ISO 10644; the characteristics of the screw component;
48、the screw symbol indicating the type of screw (see Table 3); the washer symbol indicating the type of washer (see Table 3); the hardness class of the washer. DIN EN ISO 10644:2009-10 EN ISO 10644:2009 (E) 8EXAMPLE 1 A hexagon head screw and washer assembly consisting of a screw M6 30-8.8 in accordan
49、ce with ISO 4017 (symbol S1) and a washer (hardness class 200HV), normal series, in accordance with ISO 10673 (symbol N), is designated as follows: Screw and washer assembly ISO 10644-M6 30-8.8-S1-N 200 HV EXAMPLE 2 A hexagon head screw and washer assembly of a screw M6 30-8.8 in accordance with ISO 4017 (symbol S1) with undercut (type U) and a washer (hardness class 300HV), normal series, in accordance with ISO 10673 (symbol N), is designated
