1、June 2008 Translation by DIN-Sprachendienst.English price group 6No 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).ICS 43
2、.040.50!$HT“1933749www.din.deDDIN 74361-2Disc wheels for motor vehicles and trailers Part 2: Fastening devices for bolt centering,English translation of DIN 74361-2:2008-06Scheibenrder fr Kraftwagen und Anhngefahrzeuge Teil 2: Befestigungselemente fr Bolzenzentrierung,Englische bersetzung von DIN 74
3、361-2:2008-06Roues pour vhicules routiers et remorques Partie 2: lments de fixation pour centrage par crou,Traduction anglaise de DIN 74361-2:2008-06SupersedesDIN 74361-2:1982-11www.beuth.deDocument comprises 10 pagesIn case of doubt, the German-language original shall be considered authoritative.07
4、.13 DIN 74361-2:2008-06 2 A comma is used as the decimal marker. Contents Page Foreword . 3 1 Scope . 4 2 Normative references . 4 3 Wheel nuts . 4 3.1 Dimensions, designation . 4 3.2 Technical delivery conditions . 8 3.3 Marking 8 4 Spring lock washers (C) . 8 4.1 Dimensions, designation . 8 4.2 Te
5、chnical delivery conditions . 9 5 Spherical collar bolt G 9 5.1 Dimensions, designation . 9 5.2 Technical delivery conditions . 10 5.3 Marking 10 DIN 74361-2:2008-06 3 Foreword This document has been prepared by Working Committee AA-I19 Rder of the Normenausschuss Automobiltechnik (NAAutomobil) (Roa
6、d Vehicle Engineering Standards Committee) of DIN, in which representatives of vehicle, wheel and axle manufacturers, and technical inspection bodies participate. Amendments This standard differs from DIN 74361-2:1982-11 as follows: a) all figures have been updated to conform to the state of the art
7、; b) tolerances have been updated and position tolerances have been introduced where necessary; c) the clause on “bolts” has been deleted; d) the table of wheel bolt dimensions has been expanded. Previous editions DIN KrW 225 and KrW 226: 1931-12 DIN Kr 4361 Part 2: 1939-04 DIN 74361-2: 1952-05, 195
8、5-02, 1955-06, 1968-10, 1976-10, 1982-1 DIN 74361-2:2008-06 4 1 Scope This standard applies to all types of fastening device for bolt-centered disc wheels for motor vehicles and trailers. 2 Normative references The following referenced documents are indispensable for application of this document. Fo
9、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 10089, Hot rolled steels for quenched and tempered springs Technical delivery conditions *)DIN EN 12476, Phosphate conversion coatings of
10、metals Method of specifying requirements DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and bolts with specified property classes Coarse thread and fine pitch thread DIN EN ISO 898-6, Mechanical properties of fasteners made of carbon s
11、teel and alloy steel Part 6: Nuts with specified test forces, fine-pitch thread *)DIN EN ISO 4753, Fasteners Ends of parts with external ISO metric thread DIN 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-elec
12、trolytically applied zinc flake coatings VDA Materials data sheet 235-201, Mechanical properties of fastening components made of carbon steel and steel alloys Bolts1)3 Wheel nuts 3.1 Dimensions, designation The dimensions of wheel nuts are specified in Figures 1 to 4 and in Table 1. Any die draft re
13、quired on the hexagon shall remain within the tolerances on the width across flats. The following specifications apply to the surfaces: 16zxR= ; other surfaces 25zR Designation of a spherical collar nut (A) with thread d = M 12 1,5 (12) and property class 8 (8): Wheel nut DIN 74361 A 12 8 *)Translat
14、ors note. The German original is incorrect. The standard number should read “DIN EN 10089”: *) Translators note. DIN EN ISO 898-6 has been withdrawn and replaced by DIN EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel Part 2: Nuts with specified property classes
15、Coarse thread and fine pitch thread. 1)Obtainable from: Dokumentation Kraftfahrwesen e. V. DIN 74361-2:2008-06 5 Designation of a flat collar nut (B) with thread d = M 20 1,5 (20) and property class 8 (8): Wheel nut DIN 74361 B 20 8 Designation of a conical nut (F) with thread d = M 12 1,5 (12), con
16、e angle = 60 (60) and property class 8 (8): Wheel nut DIN 74361 F 12 60 8 DIN 74361-2:2008-06 6 Dimensions in millimetres afor die-forged nuts, the radius as produced by the forming process afor die-forged nuts, the radius as produced by the forming process Figure 1 Spherical collar nut, forms A 12
17、to A 20 Figure 2 Spherical collar nut, form A 22 Thread countersunk by not more than 1,08 thread diameter. Dimensions in millimetres afor die-forged nuts, the radius as produced by the forming process afor die-forged nuts, the radius as produced by the forming process Figure 3 Flat collar nut B Figu
18、re 4 Conical nut F Thread countersunk by not more than 1,08 thread diameter. DIN 74361-2:2008-06 7 Table 1 Nuts Dimensions in millimetres Thread d Type codeb d2d3d4d5h1h2ah3h4h5Sr1SW be Mass (7,85 kg/dm3) kg per 1 000 nuts 05,0+5,005,00H 13 5,0001+ 0,5 01+ 0,5 0,25 0,1 h 13 min. 1 A B F M 12 1,5 12
19、1 23 14,5 12,5 24 18 7,5 13 2,5 - 12 17 18,90 - 26 22 - M 12 1,5 12 - - 15 13 - - - - - 14 - 19 21,10 60 90 - - - - 19,8 20,1 M 14 1,5 14 1,5 26 17 14,5 27 20 7,5 15 3 - 14 19 21,10 - 33 29 - M 18 1,5 18 1,5 28 21 18,5 29 25 7,5 18 4 - 16 24 26,51 - 53 44 - M 20 1,5 20 3 33 24,5 20,5 34 27 9 20 5 -
20、18 27 29,87 - 76 63 - M 22 1,5 22 4 36 26,5 22,5 36 30 10,5 22 6 - 18 30 33,23 - 100 79 - aThe die punching draft is not included in the values stated for h2and h4.bWidth across flats DIN 74361-2:2008-06 8 3.2 Technical delivery conditions Property class or material: 8 or 10 as specified in DIN EN I
21、SO 898-6 Product class: B as specified in DIN EN ISO 4759-1 Surface: Znph r 5 f as specified in DIN EN 12476 B2 (= Dacromet 500) as specified in VDA 235-102.40 or DIN EN ISO 10683, lubricating wax on all surfaces 3.3 Marking Conical nuts F: Property class and manufacturers marks as specified in DIN
22、EN ISO 898-6 Spherical collar nuts and flat collar nuts: Manufacturers mark and symbols denoting property class, clockwise, as described in DIN EN ISO 898-6, but markings located as shown in Figure 5. Diagram shows a spherical or flat collar nut of property class 10. * manufacturers mark (In deviati
23、on from DIN EN ISO 898-6, the marking reference point does not lie in a corner but on the edge between two corners.) Figure 5 Wheel nut marking 4 Spring lock washers (C) 4.1 Dimensions, designation Dimensions apply for the washer installed in the tightened condition Key 1 corners rounded Figure 6 Sp
24、ring lock washer form C Designation of a spring lock washer (C) with internal diameter d6= 20,5 mm (20,5): Spring lock washer DIN 74361 C 20,5 DIN 74361-2:2008-06 9 Table 2 Spring lock washers Dimensions in millimetres d605,0+d7 d8 h601+Sr1 0,5 Mass (7,85 kg/dm3) kg per 1 000 washers 12,5 23 14,5 5
25、12 7,5 14,5 26 17 6 14 10,5 18,5 29 20 7 16 14 20,5 34 24 8 18 23 22,5 34 24 8 18 21 4.2 Technical delivery conditions Material: Spring steel as specified in DIN EN 10089, or equivalent spring steel grade. Other materials subject to agreement. Finish: Hardened and tempered to HRC 44-51 (from 450 HV
26、to 570 HV) 5 Spherical collar bolt G 5.1 Dimensions, designation Dimensions in millimetres Key 1 optional recess afor die-forged bolts, the radius as produced by the forming process Figure 7 Spherical collar bolt , form G Designation of spherical collar bolt (G) with thread d = M 14 1,5 (14), length
27、 l1= 24 mm (24), property class 8.8 (8.8): Wheel bolt DIN 74361 G 14 24 8.8 DIN 74361-2:2008-06 10 Table 3 Spherical collar nuts Dimensions in millimetres Thread d Type code d105,05,1+h75,01+h8 0,5 l1 0,5 Sr12,00SW ah 13 e min. u bmax. Mass (7,85 kg/dm3) kg per 1 000 bolts M 12 1,5 12 22,5 18 7,5 21
28、 12 17 18,90 3 56 M 14 1,5 14 26 20 8,0 27,5 13 17 18,90 3 62 M 14 1,5 14 26 20 8,0 24 14 19 21,10 3 77 M 14 1,5 14 24 18 6,0 18 14 19 21,10 3 63 M 18 1,5 18 29 25 8,0 25 16 24 26,51 3 143 aWidth across flats bAs specified in DIN EN ISO 4753 5.2 Technical delivery conditions Property class or materi
29、al: 8.8, 10.9 as specified in DIN EN ISO 898-1 and VDA material data sheet 235-201 Product class: B as specified in DIN EN ISO 4759-1 Surface: Znph r 5 f as specified in DIN EN 12476 B2 (= Dacromet 500) as specified in VDA 235-102.40 or DIN EN ISO 10683, lubricating wax on all surfaces 5.3 Marking Spherical collar bolts shall be marked as specified in DIN EN ISO 898-1.
