1、August 2006DEUTSCHE NORM English price group 5No 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 21.060.10!,wE“9842534
2、www.din.deDDIN 404Slotted capstan screwsKreuzlochschrauben mit SchlitzSupersedesDIN 404:1986-09www.beuth.deTranslation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.Document comprises 5 pages10.07DIN 404:2006-08 2 Foreword This sta
3、ndard has been prepared by the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee), Technical Committee NA 067-03-05 AA Verbindungselemente mit Sonderformen. The DIN 4000-160-2 tabular layout of article characteristics shall apply to screws covered in this standard. Amend
4、ments This standard differs from DIN 404:1986-09 as follows: a) The title has been amended (applies to the German version only). b) The scope has been supplemented. c) Normative references have been updated. d) In Table 1, thread size M3,5 has been dropped. e) Clause 4 “Technical delivery conditions
5、” has been completely revised. Previous editions DIN 404: 1920-01, 1923-02, 1939-03, 1942-10, 1953-06, 1972-02, 1986-09. 1 Scope This standard specifies dimensions and technical delivery conditions for M2 to M10 slotted capstan screws. Slotted capstan screws may be used both as fastening and adjusti
6、ng screws. They are primarily designed for use in electrical engineering and may be tightened by means of a sliding tee bar where it is not possible to use a screwdriver. Locking wires are often attached to the cross holes for securing purposes. 2 Normative references The following reference documen
7、ts are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 76-1, Thread run-outs and thread undercuts for ISO metric screw threads as in
8、 DIN 13 series DIN 962, Designation system for fasteners DIN 4000-160, Tabular layouts of article characteristics for fasteners with external thread DIN EN 10087, Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods DIN EN 10277-3, Bright steel produ
9、cts Technical delivery conditions Part 3: Free-cutting steels DIN EN 12476, Phosphate conversion coatings of metals Method of specifying requirements DIN 404:2006-08 3 DIN EN 26157-1, Fasteners Surface discontinuities Bolts, screws and studs subject to general requirements DIN EN 28839, Mechanical p
10、roperties of fasteners Nonferrous metal bolts, screws, studs and nuts DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs DIN EN ISO 3269, Fasteners Acceptance inspection DIN EN ISO 3506-1, Mechanical properties of corrosion-resis
11、tant stainless steel fasteners Part 1: Bolts, screws and studs DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN ISO 4753, Fasteners Ends of parts with external ISO metric screw thread DIN EN ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and fit bolts Product grades A, B a
12、nd C 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 and nuts 3 Dimensions Screw dimensions shall be as given in Figure 1 and Table 1. Surface roughness, Rz25 a End chamfered (C
13、H) or rounded (RN) as in DIN EN ISO 4753. b Length of incomplete thread, u 2 P. Figure 1 Dimensions of slotted capstan screw (notation) DIN 404:2006-08 4 Table 1 Screw dimensions Dimensions in millimetres Thread size d M2 M2,5 M3 M4 M5 M6 M8 M10 Pa0,4 0,45 0,5 0,7 0,8 1 1,25 1,5 bbP20+16 18 19 22 25
14、 28 34 40 damax. 2,6 3,1 3,6 4,7 5,7 6,8 9,2 11,2 min. (nominal size) 1,20 1,20 1,50 2,00 2,50 3,00 4,00 5,00 dhmax. 1,34 1,34 1,64 2,14 2,64 3,14 4,18 5,18 max. (nominal size) 3,80 4,50 5,50 7,00 8,50 10,00 13,00 16,00 dkmin. 3,68 4,38 5,38 6,85 8,35 9,85 12,82 15,82 max. (nominal size) 2,00 2,50 3
15、,00 4,00 5,00 6,00 8,00 10,00 dsmin. 1,86 2,36 2,86 3,82 4,82 5,82 7,78 9,78 f 0,3 0,4 0,5 0,6 0,7 0,9 1 1,3 Nominal size 3 3,5 4 5 6,5 8 10 12,5 max. 3,3 3,88 4,38 5,38 6,95 8,45 10,45 13,05 k min. 2,7 3,12 3,62 4,62 6,05 7,55 9,55 11,95 Nominal size 0,5 0,6 0,8 1 1,2 1,6 2 2,5 max. 0,56 0,66 0,86
16、1,06 1,26 1,66 2,06 2,56 n min. 0,70 0,80 1,00 1,20 1,51 1,91 2,31 2,81 r min. 0,1 0,1 0,1 0,2 0,2 0,25 0,4 0,4 rf 6 6 8 10 16 16 20 25 min. 0,7 0,8 1,00 1,4 1,7 2,2 2,7 3,5 t max. 0,9 1,0 1,25 1,7 2,0 2,6 3,2 4,1 Nominal size 1,2 1,2 1,5 2 2,5 3 4 5 min. 1,08 1,08 1,38 1,88 2,38 2,88 3,85 4,85 w ma
17、x. 1,32 1,32 1,62 2,12 2,62 3,12 4,15 5,15 x max. 1 1,1 1,25 1,75 2 2,5 3,2 3,8 l Nominal size min. max. Mass (7,85 kg/dm3) in kg per 1 000 units c 3 2,8 3,2 4 3,8 4,2 0,68 5 4,8 5,2 0,28 0,46 0,72 1,41 6 5,8 6,2 0,3 0,49 0,77 1,49 3,09 8 7,7 8,3 0,35 0,55 0,86 1,64 3,33 4,79 10 9,7 10,3 0,4 0,61 0,
18、95 1,79 3,58 5,14 10,3 12 11,7 12,3 0,45 0,67 1,05 1,94 3,82 5,49 10,9 19,3 (14) 13,7 14,3 0,5 0,73 1,16 2,1 4,06 5,84 11,5 20,5 16 15,7 16,3 0,55 0,79 1,27 2,28 4,3 6,2 12,1 21,3 (18) 17,7 18,3 0,6 0,85 1,38 2,48 4,6 6,55 12,7 22,3 20 19,6 20,4 0,91 1,5 2,7 4,85 6,9 13,3 23,2 (22) 21,6 22,4 0,97 1,
19、62 2,93 5,1 7,25 14 24,2 25 24,6 25,4 1,06 1,78 3,23 5,6 7,8 15,2 25,7 (28) 27,6 28,4 1,95 3,52 6,1 8,4 16,4 27,2 30 29,6 30,4 2,06 3,72 6,4 8,9 17,2 28,2 35 34,5 35,5 4,21 7,2 10,1 19,2 31,3 40 39,5 40,5 4,71 8 11,2 21,1 34,4 45 44,5 45,5 8,8 12,3 23,1 37,5 50 49,5 50,5 9,6 13,4 25,1 41,1 55 54,4 5
20、5,6 27,1 44,2 60 59,4 60,6 47,3 Bracketed sizes should be avoided if possible. Lengths exceeding 60 mm shall be graded in 10 mm steps. Slotted capstan screws are generally manufactured in sizes for which a value of mass has been specified. aThread pitch. bFor screws with lengths above the stepped li
21、ne, b l a1(a1as in DIN 76-1). cThe values of mass are guideline values for slotted capstan screws made of steel. DIN 404:2006-08 5 4 Technical delivery conditions Table 2 Technical delivery conditions Material Steel Stainless steel Nonferrous metal General requirements As specified in DIN ISO 8992.
22、Tolerance class 6g Thread Standard DIN ISO 965-1 Property class (material) St A1 A2 CU3 Mechanical properties Standards DIN EN 10087 DIN EN 10277-3 DIN EN ISO 3506-1aDIN EN 28839a Product grade A Limit deviations and geometrical tolerances Standard DIN EN ISO 4759-1 As processed. Plain Plain DIN EN
23、ISO 4042 shall apply with regard to electroplating. Surface finish DIN EN 12476 shall apply with regard to phosphating. DIN EN ISO 4042 shall apply with regard to electro-plating. Surface discontinuities DIN EN 26157-1 Acceptance inspection DIN EN ISO 3269 shall apply with regard to acceptance inspe
24、ction. a For screws made of stainless steel or nonferrous metal, verification of compliance with the mechanical properties specified is not required. 5 Designation EXAMPLE Designation of an M6 slotted capstan screw with a length, l (nominal size), of 20 mm, made of steel (St): Capstan screw DIN 404 M6 20 St Designation details for special design features are given in DIN 962.
