1、November 2011 Translation by DIN-Sprachendienst.English price group 8No part of this translation 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).IC
2、S 21.060.10!$v-6“1831019www.din.deDDIN EN ISO 7049Cross-recessed pan head tapping screws (ISO 7049:2011)English translation of DIN EN ISO 7049:2011-11Linsenkopf-Blechschrauben mit Kreuzschlitz (ISO 7049:2011)Englische bersetzung von DIN EN ISO 7049:2011-11Vis tle tte cylindrique bombe large empreint
3、e cruciforme (ISO 7049:2011)Traduction anglaise de DIN EN ISO 7049:2011-11SupersedesDIN ISO 7049:1990-08www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.10.1111DIN EN ISO 7049:2011-11 A comma is used as the decimal marker. National
4、foreword This standard has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Fasteners” (both secretariats are held by DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Mechanische Verbindungse
5、lemente (Fasteners Standards Committee), Working Committee NA 067-00-05 AA Kleinschrauben und gewindeformende Schrauben. The DIN 4000-160-9 tabular layout of article characteristics shall apply to screws covered in this standard. The DIN Standards corresponding to the International Standards referre
6、d to in Clause 2 of this document are as follows: ISO 225 DIN EN ISO 225 ISO 1478 DIN EN ISO 1478 ISO 2702 DIN EN ISO 2702 ISO 3269 DIN EN ISO 3269 ISO 3506-4 DIN EN ISO 3506-4 ISO 4042 DIN EN ISO 4042 ISO 4757 DIN EN ISO 4757 ISO 4759-1 DIN EN ISO 4759-1 ISO 8992 DIN ISO 8992 ISO 10683 DIN EN ISO 1
7、0683 ISO 16048 DIN EN ISO 16048 Amendments This standard differs from DIN ISO 7049:1990-08 as follows: a) normative references have been revised; b) thread end type R (rounded end) has been included; c) stainless steel has been added; d) in Table 2, specifications relating to the surface have been r
8、endered more precise and requirements for non-electrolytically applied zinc flake coatings and passivation have been added; e) the standard has been editorially revised. Previous editions DIN 7981: 1953-07, 1956-12, 1959-08, 1970-07, 1984-12, 1990-08 DIN ISO 7049: 1990-08 2 DIN EN ISO 7049:2011-11 3
9、 National Annex NA (informative) Bibliography DIN 4000-160, Tabular layout of product properties Part 160: Fasteners with external thread DIN EN ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions DIN EN ISO 1478, Tapping screw thread DIN EN ISO 2702, Heat-treated
10、 steel tapping screws Mechanical properties DIN EN ISO 3269, Fasteners Acceptance inspection DIN EN ISO 3506-4, Mechanical properties of corrosion-resistant stainless steel fasteners Part 4: Tapping screws DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN ISO 4757, Cross recesses for screws D
11、IN EN ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts; Product grades A, B and C DIN EN ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings DIN EN ISO 16048, Passivation of corrosion-resistant stainless-steel fasteners DIN ISO 8992, Fasteners General requ
12、irements for bolts, screws, studs and nuts This page is intentionally blank DIN EN ISO 7049:2011-11 4EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7049 August 2011 ICS 21.060.10 Supersedes EN ISO 7049:1994English Version Cross-recessed pan head tapping screws(ISO 7049:2011)Vis tle tte cyl
13、indrique bombe large empreinte cruciforme (ISO 7049:2011) Linsenkopf-Blechschrauben mit Kreuzschlitz (ISO 7049:2011) This European Standard was approved by CEN on 1 July 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur
14、opean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versio
15、ns (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, B
16、elgium, Bulgaria, Croatia, 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 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7049:2011: EContents Page Fore
18、word 3EN ISO 7049:2011 (E) DIN EN ISO 7049:2011-11 21 Scope4 2 Normative references4 3 Dimensions 5 4 Specifications and reference International Standards 7 5 Designation 7 Foreword This document (EN ISO 7049:2011) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with T
19、echnical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2012, and conflicting national standards shall be withdr
20、awn at the latest by February 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 7049:1994. Accordi
21、ng to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy
22、, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 7049:2011 has been approved by CEN as a EN ISO 7049:2011 without any modification. EN ISO 7049:2011 (E) DI
23、N EN ISO 7049:2011-11 31 Scope This International Standard specifies the characteristics of cross-recessed pan head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive. 2 Normative references The following referenced documents are indispensable for the application of this document. For
24、dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions ISO 1478, Tapping screws thread ISO 2702, Heat-treated s
25、teel tapping screws Mechanical properties ISO 3269, Fasteners Acceptance inspection ISO 3506-4, Mechanical properties of corrosion-resistant stainless steel fasteners Part 4: Tapping screws ISO 4042, Fasteners Electroplated coatings ISO 4757, Cross recesses for screws ISO 4759-1, Tolerances for fast
26、eners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 8992, Fasteners General requirements for bolts, screws, studs and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 16048, Passivation of corrosion-resistant stainless-steel fasteners EN ISO 7049:2
27、011 (E) DIN EN ISO 7049:2011-11 43 Dimensions See Figure 1 and Table 1. Symbols and descriptions of dimensions are specified in ISO 225. a) Type C b) Type F c) Type R d) Type H Cross recess e) Type Z Cross recess aDimension a shall be measured at the core diameter of the first full thread. Figure 1
28、Cross-recessed pan head tapping screw EN ISO 7049:2011 (E) DIN EN ISO 7049:2011-11 5Table 1 Dimensions Dimensions in millimetres Thread size ST 2,2 ST 2,9 ST 3,5 ST 4,2 ST 4,8 ST 5,5 ST 6,3 ST 8 ST 9,5 Pa0,8 1,1 1,3 1,4 1,6 1,8 1,8 2,1 2,1 a max. 0,8 1,1 1,3 1,4 1,6 1,8 1,8 2,1 2,1 damax. 2,8 3,5 4,
29、1 4,9 5,6 6,3 7,3 9,2 10,7 max. 4,00 5,60 7,00 8,00 9,50 11,00 12,00 16,00 20,00 dkmin. 3,70 5,30 6,64 7,64 9,14 10,57 11,57 15,57 19,48 max. 1,60 2,40 2,60 3,10 3,70 4,00 4,60 6,00 7,50 k min. 1,40 2,15 2,35 2,80 3,40 3,70 4,30 5,60 7,10 r min. 0,10 0,10 0,10 0,20 0,20 0,25 0,25 0,40 0,40 rf 3,2 5,
30、0 6,0 6,5 8,0 9,0 10,0 13,0 16,0 Recess No 0 1 2 3 4 m ref. 1,9 3,0 3,9 4,4 4,9 6,4 6,9 9,0 10,1 max. 1,20 1,80 1,90 2,40 2,90 3,10 3,60 4,70 5,80 Type H Penetration min. 0,85 1,40 1,40 1,90 2,40 2,60 3,10 4,15 5,20 m ref. 2,0 3,0 4,0 4,4 4,8 6,2 6,8 8,9 10,1 max. 1,20 1,75 1,90 2,35 2,75 3,00 3,50
31、4,50 5,70 Cross recess Type Z Penetration min. 0,95 1,45 1,50 1,95 2,30 2,55 3,05 4,05 5,25 Type C 2,0 2,6 3,2 3,7 4,3 5,0 6,0 7,5 8,0 Type F 1,6 2,1 2,5 2,8 3,2 3,6 3,6 4,2 4,2 y ref. Type R 2,7 3,2 3,6 4,3 5,0 6,3 lbType C and Type R Type F nom. min. max. min. max. 4,5 3,7 5,3 3,7 4,5 6,5 5,7 7,3
32、5,7 6,5 9,5 8,7 10,3 8,7 9,5 13 12,2 13,8 12,2 13,0 Range 16 15,2 16,8 15,2 16,0 of 19 18,2 19,8 18,2 19,0 preferred 22 21,2 22,8 20,7 22,0 lengths 25 24,2 25,8 23,7 25,0 32 30,7 33,3 30,7 32,0 38 36,7 39,3 36,7 38,0 45 43,7 46,3 43,5 45,0 50 48,7 51,3 48,5 50,0 aP = pitch of the thread. bSizes with
33、 lengths marked with a dash () cannot be manufactured. EN ISO 7049:2011 (E) DIN EN ISO 7049:2011-11 64 Specifications and reference International Standards See Table 2. Table 2 Specifications and reference International Standards Material Steel, in accordance with ISO 2702 Stainless steel General re
34、quirements ISO 8992 Thread ISO 1478 Cross recess ISO 4757 Steel grade/ hardness class A2-20H, A4-20H, A5-20H Mechanical propertyInternational Standard ISO 2702 ISO 3506-4 Product grade A Tolerances International Standard ISO 4759-1 As processed Finish Coating Requirements for electroplating are spec
35、ified in ISO 4042. Requirements for non-electrolytically applied zinc flake coatings are specified in ISO 10683. Additional requirements or other finishes or coatings shall be agreed between the supplier and the purchaser. Requirements for passivation are specified in ISO 16048. Acceptability Accept
36、ance inspection is specified in ISO 3269. 5 Designation EXAMPLE 1 A cross-recessed pan head tapping screw with thread size ST 3,5, nominal length l = 16 mm, made of steel (St) in accordance with ISO 2702, rounded end (Type R) and cross recess Type Z is designated as follows: Tapping screw ISO 7049 -
37、 ST 3,5 16 - St - R - Z EXAMPLE 2 A cross-recessed pan head tapping screw with thread size ST 3,5, nominal length l = 16 mm, made of stainless steel (A4-20H) in accordance with ISO 3506-4, rounded end (Type R) and cross recess Type H is designated as follows: Tapping screw ISO 7049 - ST 3,5 16 - A4-20H - R - H EN ISO 7049:2011 (E) DIN EN ISO 7049:2011-11 7
