1、August 2013 Translation 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、21.060.20!%+G*“2083607www.din.deDDIN 979Hexagon thin slotted and castle nuts Metric coarse and fine pitch thread, product grades A and B,English translation of DIN 979:2013-08Niedrige Sechskant-Kronenmuttern Metrisches Regel- und Feingewinde, Produktklassen A und B,Englische bersetzung von DIN 979:2
3、013-08crous hexagonaux bas crneaux et crneaux dgags Filetage mtrique pas gros et fin, grades A et B,Traduction anglaise de DIN 979:2013-08SupersedesDIN 979:2000-10www.beuth.deDocument comprises 10 pagesIn case of doubt, the German-language original shall be considered authoritative.01.14 DIN 979:201
4、3-08 2 A comma is used as the decimal marker. Contents Page Foreword . 3 1 Scope . 4 2 Normative references . 4 3 Dimensions 5 4 Technical delivery conditions . 8 5 Designation . 9 6 Marking 9 Bibliography . 10 DIN 979:2013-08 3 Foreword This standard has been prepared by Working Committee NA 067-00
5、-03 AA Verbindungselemente mit metrischem Innengewinde of the Normenausschuss Mechanische Verbindungselemente (FMV) (Fasteners Standards Committee). The DIN 4000-161-1 tabular layout of article characteristics applies to hexagon slotted and castle nuts covered in this standard. Amendments This stand
6、ard differs from DIN 979:2000-10 as follows: a) normative references have been updated; b) in Table 1 all dimensions are now given to the same number of decimal places; c) symbols have been changed from d to D, w to m and m to h in accordance with DIN EN ISO 225; d) mechanical properties of Table 2
7、have been brought into line with DIN EN ISO 898-2 and DIN EN ISO 3506-2; e) Clause 7 “Marking” has been revised. Previous editions DIN 979: 1972-12, 1977-04, 1983-12, 1987-10, 2000-02, 2000-10 DIN 979:2013-08 4 1 Scope This standard applies to hexagon slotted and castle nuts with metric coarse and f
8、ine pitch thread and nominal thread diameter between 6 mm to 52 mm of product grade A (up to 16 mm nominal thread diameter) and product grade B (over 16 mm nominal thread diameter). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and a
9、re indispensable for its application. For dated references, only 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 962, Bolts, scr
10、ews, studs and nuts Designations, types and finishes DIN EN 28839, Mechanical properties of fasteners Nonferrous metal bolts, screws, studs and nuts DIN EN ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions DIN EN ISO 898-2, Mechanical properties of fasteners mad
11、e 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 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts DIN E
12、N ISO 4042, Fasteners Electroplated 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-electroly
13、tically applied zinc flake coatings 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 requirem
14、ents for bolts, screws, studs and nuts DIN 979:2013-08 5 3 Dimensions Dimensions shall be as given in Figures 1 and 2 and Table 1. Other relevant symbols and their descriptions are specified in DIN EN ISO 225. 2nr = Figure 1 Hexagon thin slotted and castle nuts with D 10 mm (notation) Other dimensio
15、ns as in Figure 1 Figure 2 Hexagon thin slotted and castle nuts with D 12 mm (notation) The bottom of slots may be round, rounded or chamfered, at the manufacturers discretion. The slotted nuts may be supplied with or without thread in the castle nut, at the manufacturers discretion. Faces of the ca
16、stle nuts may be rounded. Number of slots: D 39 mm: 6 D 39 mm: 8 DIN 979:2013-08 6 Table 1 Dimensions Dimensions in millimetres Thread size M6 (M7) M8 M10 M12 (M14) M16 (M18) M20 (M22) M8 1 M10 1 M12 1,5 (M14 1,5) M16 1,5 (M18 1,5) M20 2 (M22 1,5) M10 1,25 M12 1,25 (M18 2) M20 1,5 (M22 2) Pa1 1 1,25
17、 1,5 1,75 2 2 2,5 2,5 2,5 damax. 6,75 7,75 8,75 10,80 13,00 15,10 17,30 19,50 21,60 23,80 min. 6,00 7,00 8,00 10,00 12,00 14,00 16,00 18,00 20,00 22,00 demax. 16,00 18,00 22,00 25,00 28,00 32,00 min. 15,57 17,57 21,48 24,30 27,30 31,00 dwmin. 8,90 9,50 11,60 14,60 16,60 19,60 22,50 24,90 27,70 31,40
18、 e min. 11,05 12,12 14,38 17,77 20,03 23,35 26,75 29,56 32,95 37,29 h Nominal size = max. 5,00 5,50 6,50 8,00 10,00 11,00 13,00 15,00 16,00 18,00 min. 4,70 5,20 6,14 7,64 9,64 10,57 12,57 14,30 15,30 17,30 m max. 2,50 3,00 3,50 4,00 5,00 6,00 7,00 9,00 10,00 10,00 min. 2,25 2,75 3,20 3,70 4,70 5,70
19、6,64 8,64 9,64 9,64 mwmin. 2,32 2,64 2,96 3,76 4,56 5,14 5,94 6,48 7,28 7,92 n max. 2,25 2,25 2,75 3,05 3,80 3,80 4,80 4,80 4,80 5,80 min. 2,00 2,00 2,50 2,80 3,50 3,50 4,50 4,50 4,50 5,50 s Nominal size = max. 10 11 13 16b18b21b24 27 30 34bmin. 9,78 10,73 12,73 15,73 17,73 20,67 23,67 26,16 29,16 3
20、3,00 Size of split pin as in DIN EN ISO 1234c1,6 14 1,6 14 2 16 2,5 20 3,2 22 3,2 25 4 28 4 32 4 36 4 36 NOTE Bracketed sizes should not be used. aP is the pitch of the coarse thread as in DIN ISO 261. bThe width across flats shall be included in the designation (see Clause 5). cThe split pin length
21、s given are for guidance only. DIN 979:2013-08 7 Table 1 (continued) Dimensions in millimetres Thread size M24 (M27) M30 (M33) M36 (M39) M42 (M45) M48 (M52) M24 2 (M27 2) M30 2 (M33 2) M36 3 (M39 3) M42 3 (M45 3) M48 3 (M52 3) Pa3 3 3,5 3,5 4 4 4,5 4,5 5 5 damax. 25,90 29,20 32,40 35,60 38,90 42,10
22、45,40 48,60 51,80 56,20 min. 24,00 27,00 30,00 33,00 36,00 39,00 42,00 45,00 48,00 52,00 demax. 34,00 38,00 42,00 46,00 50,00 55,00 58,00 62,00 65,00 70,00 min. 33,00 37,00 41,00 45,00 49,00 53,80 56,80 60,80 63,80 68,80 dwmin. 33,30 38,00 42,80 46,60 51,10 55,90 60,00 64,70 69,50 74,20 e min. 39,55
23、 45,20 50,85 55,37 60,79 66,44 71,30 76,95 82,60 88,25 h Nominal size = max. 19,00 22,00 24,00 26,00 29,00 31,00 33,00 34,50 36,00 38,00 min. 18,16 21,16 23,16 25,16 28,16 30,00 32,00 33,50 35,00 37,00 m max. 11,00 14,00 15,00 17,00 20,00 22,00 22,00 22,50 24,00 26,00 min. 10,57 13,57 14,57 16,57 19
24、,48 21,48 21,48 22,02 23,48 25,48 mwmin. 8,72 9,92 11,10 12,30 13,50 14,60 15,80 16,20 18,20 19,80 n max. 5,80 5,80 7,36 7,36 7,36 7,36 9,36 9,36 9,36 9,36 min. 5,50 5,50 7,00 7,00 7,00 7,00 9,00 9,00 9,00 9,00 s Nominal size = max. 36 41 46 50 55 60 65 70 75 80 min. 35,00 40,00 45,00 49,00 53,80 58
25、,80 63,10 68,10 73,10 78,10 Size of splint as in DIN EN ISO 1234c5 40 5 45 6,3 506,3 566,3 636,3 718 71 8 80 8 80 8 90 NOTE Bracketed sizes should not be used. a, cFor footnotes see page 6. DIN 979:2013-08 8 4 Technical delivery conditions See Table 2. Table 2 Technical delivery conditions Material
26、Steel Stainless steel Nonferrous metals General requirements Standard DIN ISO 8992 Thread Tolerance class 6HaStandards DIN ISO 261, DIN ISO 965-1 Mechanical properties Property classb(material) D 39 mm: 04, 05 D 39 mm: subject to agreement D 20 mm: A2-035 20 mm 39 mm: subject to agreement CuZncStand
27、ards DIN EN ISO 898-2 DIN EN ISO 3506-2 DIN EN 28839 Limit deviations and geometrical tolerances Product grade D 16 mm: A D 16 mm: B Standard DIN EN ISO 4759-1 Surface finishing As processed Plain Plain DIN EN ISO 4042 applies with regard to electroplating. DIN EN ISO 4042 applies with regard to ele
28、ctroplating. DIN EN ISO 10683 applies with regard to non-electrolytically zinc flake coatings. DIN EN ISO 10684 applies with regard to hot-dip galvanizing. DIN 267-2 applies with regard to surface roughness. Additional requirements and alternative surface conditions or finishing are to be agreed bet
29、ween manufacturer and purchaser. Surface condition DIN EN ISO 10484 applies with regard to limit values for the drift extending test. DIN EN ISO 6157-2 applies with regard to limit values for tolerable surface discontinuities. Acceptance inspection DIN EN ISO 3269 applies with regard to acceptance i
30、nspection. 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 6H nuts, to select a larger fundamental deviation than that assigned to the H position. This howe
31、ver, 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 standards. cCU2 or CU3 at the manufacturers discretion. DIN 979:2013-08 9 5 Designation Designation of a size M8 hex
32、agon castle nut of property class 05: Castle nut DIN 979 M8 05 The designation of sizes M10, M12, M14 and M22 nuts shall also include the width across flats (SW), e.g. SW18 for M12: Castle nut DIN 979 M12 SW18 05 If for nominal thread diameter exceeding 16 mm product grade A is desired, this shall b
33、e added to the designation, e.g.: Castle nut DIN 979 M20 05 A If castle nuts of nominal thread diameter from 12 mm to 39 mm without castle are to be supplied, the symbol KK shall be added to the designation, e.g.: Castle nut DIN 979 M20 KK 05 DIN 962 shall apply with regard to the designation of des
34、igns and types with additional details to be given when ordering. Nuts supplied in accordance with this standard may only be made of free-cutting steel if this is indicated in the designation by including the symbol AU, e.g.: Castle nut DIN 979 M8 04 AU 6 Marking Castle nuts shall be marked as speci
35、fied in DIN EN ISO 898-2, DIN EN ISO 3506-2 and DIN EN 28839. Marking of the bearing surface is only permissible when recessed. Castle nuts manufactured by machining shall only be marked subject to agreement. DIN 979:2013-08 10 Bibliography DIN 4000-161, Tabular layout of product properties Part 161: Fasteners with internal thread
