DIN 34818-2002 Sheet spring nuts with tappping screw thread《带攻丝螺纹的薄弹簧螺母》.pdf

1、ICS 21.060.20Federmuttern mit BlechschraubengewindeIn keeping with current practice in standards published by the International Organization for Standardization(ISO), a comma has been used throughout as the decimal marker.Ref. No. DIN 34818 : 2002-12English price group 05 Sales No. 010509.03DEUTSCHE

2、 NORM December 200234818Continued on pages 2 and 3. No part of this translation may be reproduced without the 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).Translation by D

3、IN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.Sheet spring nuts with tapping screw threadForewordThis standard has been prepared by Technical Committee Kleinschrauben of the NormenausschussMechanische Verbindungselemente (Fasteners Sta

4、ndards Committee).All dimensions are in millimetres.1 ScopeThis standard specifies dimensions and technical delivery conditions for sheet spring nuts with tappingscrew thread for use with tapping screws with thread as in DIN EN ISO 1478.2 Normative referencesThis standard incorporates, by dated or u

5、ndated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the titles of the publications arelisted below. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this standard only whe

6、n incorporated in it by amendment or revision. For undated references, thelatest edition of the publication referred to applies.DIN EN 10132-4 Cold-rolled narrow steel strip for heat treatment Technical delivery conditions Part 4: Spring steels and other applicationsDIN EN ISO 1478 Tapping screw thr

7、eads (ISO 1478 : 1999)DIN EN ISO 3269 Fasteners Acceptance inspection (ISO 3269 : 2000)DIN EN ISO 10683 Fasteners Non-electrolytically applied zinc flake coatings (ISO 10683 : 2000)ISO 8992 : 1986 Fasteners General requirements for bolts, screws, studs and nutsPage 2DIN 34818 : 2002-123 DimensionsNu

8、t dimensions shall be as given in figure 1 and table 1.Other dimensions are at the manufacturers discretion.1) 3 mm radius.Figure 1: Nut dimensions (notation)Table 1: Nut dimensions1)Nominal sizeLow (L)High (H)to1) With fminand fmaxin as delivered condition.Suitable for screws of sizeSheet thickness

9、, sWidth, bLength, aDimension xClamping range,fmaxto fmin1)toPage 3DIN 34818 : 2002-124 Technical delivery conditionsTable 2: Technical delivery conditionsDIN EN 10132-4.ISO 8992.435 HV5 to 535 HV5As specified in DIN EN ISO 3269.5 DesignationDesignation of a size 3,5 sheet spring nut (3,5), with low

10、 clamping range (L) and a length, a, of 17 mm, with adimension X (as in figure 2) of 8 mm (8):Nut DIN 34818 3,5 N 86 Connecting dimensionsConnecting dimensions shall be as given in figure 2 and table 3.Figure 2: Connecting dimensionsTable 3: Connecting dimensions (cf. figure 2)MaterialSteel gradeAs specified inAs specified inGeneral requirementsZinc flake coatings, as in DIN EN ISO 10683.Surface finishAcceptance inspectionHardnessNominal sizeDimension XDiameter, dXd