1、August 2013Translation by DIN-Sprachendienst.English price group 7No 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 2
2、1.060.20!%+G)“2083606www.din.deDDIN 935-3Hexagon slotted nuts Part 3: Metric coarse pitch thread, product grade CEnglish translation of DIN 935-3:2013-08Sechskant-Kronenmuttern Teil 3: Metrisches Regelgewinde, Produktklasse CEnglische bersetzung von DIN 935-3:2013-08crous hexagonaux crneaux Partie 3
3、: Filetage mtrique pas gros, grade CTraduction anglaise de DIN 935-3:2013-08SupersedesDIN 935-3:2000-10www.beuth.deDocument comprises 9 pagesIn case of doubt, the German-language original shall be considered authoritative.01.14 DIN 935-3:2013-08 2 A comma is used as the decimal marker. Contents Page
4、 Foreword . 3 1 Scope . 4 2 Normative references . 4 3 Dimensions 4 4 Technical delivery conditions . 7 5 Designation . 8 6 Masses . 8 7 Marking 8 Bibliography . 9 DIN 935-3:2013-08 3 Foreword This standard has been prepared by Working Committee NA 067-00-03 AA Verbindungselemente mit metrischem Inn
5、engewinde of the Normenausschuss Mechanische Verbindungselemente (FMV) (Fasteners Standards Committee). The DIN 4000-161-1 tabular layout of article characteristics applies to slotted and castle nuts covered in this standard. DIN 935 consists of the following parts with the general title Hexagon slo
6、tted and castle nuts: Part 1: Metric coarse and fine pitch threads, product grades A and B Part 3: Metric coarse pitch threads, product grade C Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for
7、identifying any or all such patent rights. Amendments This standard differs from DIN 935-3:2000-10 as follows: a) the title of the standard has been defined more precisely by adding “hexagon”; b) normative references have been updated; c) in Table 1 all dimensions are now given to the same number of
8、 decimal places; d) symbols have been changed from d to D, w to m and m to h in accordance with DIN EN ISO 225; e) technical delivery conditions of Table 2 have been brought into line with DIN EN ISO 898-2; f) all thread sizes have now been included in property class 5; g) Clause 7 “Marking” has bee
9、n revised. Previous editions DIN Kr 753: 1934-12, 1936-09 DIN 533-1: 1941-01, 1959-09, 1963-06 DIN 534-1: 1941x-01, 1963-06 DIN 935: 1968-05, 1977-04 DIN 935-1: 1926-01, 1934-04, 1937-06, 1942x-04, 1954-02, 1956-05, 1963-06 DIN 935-3: 1983-12, 1987-10, 2000-02, 2000-10 DIN 935-3:2013-08 4 1 Scope Th
10、is standard specifies hexagon slotted and castle nuts with metric coarse pitch thread of M12 to M33 of product grade C. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, on
11、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 267-2, Fasteners Technical delivery conditions Design and dimensional accuracy DIN EN ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions
12、of dimensions DIN EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel Part 2: Nuts with specified property classes Coarse thread and fine pitch thread DIN EN ISO 1234, Split pins DIN EN ISO 3269, Fasteners Acceptance inspection DIN EN ISO 4042, Fasteners Electroplat
13、ed coatings DIN EN ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts; Product grades A, B and C DIN EN ISO 6157-2, Fasteners Surface discontinuities Part 2: Nuts DIN EN ISO 10484, Widening test on nuts DIN EN ISO 10683, Fasteners Non-electrolytically applied zinc flake coati
14、ngs DIN EN ISO 10684, Fasteners Hot dip galvanized coatings DIN ISO 261, ISO general purpose metric screw threads General plan DIN ISO 965-1, ISO general purpose metric screw threads Tolerances Part 1: Principles and basic data DIN ISO 8992, Fasteners General requirements for bolts, screws, studs an
15、d nuts DIN 935-3:2013-08 5 3 Dimensions Dimensions shall be as given in Figure 1 and Table 1. Other relevant symbols and their descriptions are specified in DIN EN ISO 225. 2nr = Number of slots: 6 Figure 1 Hexagon slotted and castle nut (notation) The bottom of slots may be round, rounded or chamfe
16、red, at the manufacturers discretion. The slotted nuts may be supplied with or without thread in the castle, at the manufacturers discretion. Faces of the castle may be rounded. DIN 935-3:2013-08 6 Table 1 Dimensions Dimensions in millimetres Thread size (D) M12 M16 M20 M24 (M27) M30 (M33) Pa1,75 2
17、2 3 3 3,5 3,5 damax. 13,00 17,30 21,60 25,90 29,20 32,40 35,60 min. 12,00 16,00 20,00 24,00 27,00 30,00 33,00 dwmin. 16,10 21,70 27,70 33,20 38,00 42,70 46,60 e min. 19,85 26,17 32,95 39,55 45,20 50,85 55,37 h Nominal size = max. 15,0 19,0 22,0 27,0 30,0 33,0 35,0 min. 13,20 16,90 19,90 24,90 27,90
18、30,50 32,50 m max. 10,00 13,00 16,00 19,00 22,00 24,00 26,00 min. 9,48 12,30 15,30 18,16 21,16 23,16 25,16 mwmin. 10,60 13,50 15,90 19,90 22,30 24,40 26,00 n max. 3,98 4,98 4,98 5,98 5,98 7,58 7,58 min. 3,50 4,50 4,50 5,50 5,50 7,00 7,00 s Nominal size = max. 18 24 30 36 41 46 50 min. 17,57 23,16 29
19、,16 35,00 40,00 45,00 49,00 Size of split pin as in DIN EN ISO 1234b3,2 22 4 28 4 36 5 40 5 45 6,3 50 6,3 56 NOTE Bracketed sizes should not be used. aP is the pitch of coarse thread. bThe split pin lengths given are for guidance only. DIN 935-3:2013-08 7 4 Technical delivery conditions See Table 2.
20、 Table 2 Technical delivery conditions Material Steel General requirements Standard DIN ISO 8992 Thread Tolerance class 7HaStandards DIN ISO 261, DIN ISO 965-1 Mechanical properties Property classb5 Standard DIN EN ISO 898-2 Limit deviations and geometrical tolerances Product grade C Standard DIN EN
21、 ISO 4759-1 Surface coating As processed DIN EN ISO 4042 applies with regard to electroplating. DIN EN ISO 10683 applies with regard to non-electrolytically applied zinc flake coatings. DIN ISO 10684 applies with regard to hot-dip galvanizing. DIN 267-2 applies with regard to surface roughness. Addi
22、tional requirements and alternative surface conditions or finishing are to be agreed between manufacturer and purchaser. Surface condition DIN EN ISO 10484 applies with regard to limit values for the widening test. DIN EN ISO 6157-2 applies with regard to limit values for surface discontinuities. Ac
23、ceptance inspection DIN EN ISO 3269 applies with regard to acceptance inspection. aWhere an electroplated coating as specified in DIN EN ISO 4042 is to be applied, depending on the coating thickness required, it may be necessary, particularly in the case of tolerance class 7H nuts, to select a large
24、r fundamental deviation than that assigned to the H position. This however, might impair the resistance of the bolt/nut assembly to stripping. bWhere nuts are to be made to comply with other property classes, these shall be selected based on the relevant standard DIN EN ISO 898-2. DIN 935-3:2013-08
25、8 5 Designation Designation of a size M20 castle nut of property class 5: Castle nut DIN 935 M20 5 The designation of a size M12 nut shall also include the width across flats (SW), e.g.: Castle nut DIN 935 M12 SW18 5 6 Masses The values of mass given in Table 3 are for guidance only. Table 3 Masses
26、Thread (D) M12 M16 M20 M24 M27 M30 M33 Mass (7,85 kg/dm3) kg per 1 000 units a44 82 142 208 295 352 aMasses currently not available. 7 Marking Nuts shall be marked as specified in DIN EN ISO 898-2. Marking of the bearing surface is only permissible when recessed. DIN 935-3:2013-08 9 Bibliography DIN 4000-161, Tabular layout of product properties Part 161: Fasteners with internal thread
