1、May 2008DEUTSCHE NORM 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 21.060.10!$QON“1464443ww
2、w.din.deDDIN 34819Hexalobular socket raised head tapping screws with collarLinsenkopf-Blechschrauben mit Bund und InnensechsrundSupersedesDIN 34819:2002-10www.beuth.deIn case of doubt, the German-language original should be consulted as the authoritative text.Translation by DIN-Sprachendienst.Docume
3、nt comprises 7 pagesDIN 34819:2008-05 2 Foreword This standard has been prepared by the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee), Technical Committee NA 067-03-03 AA Kleinschrauben. The DIN 4000-160-9 tabular layout of article characteristics shall apply to scr
4、ews covered in this standard. Amendments This standard differs from DIN 34819:2002-10 as follows: a) Hexalobular socket raised head tapping screws may now also be made of grade A5-20H stainless steel. Previous editions DIN 34819: 2002-10 DIN 34819:2008-05 3 1 Scope This standard specifies dimensions
5、 and technical delivery conditions for sizes ST2,9 to ST6,3 hexalobular socket raised head tapping screws with collar, of product grade A. Where screws are to comply with specifications other than those given in this standard, these shall be se-lected in accordance with the relevant standards. 2 Nor
6、mative references The following reference documents are indispensable for the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN EN ISO 1478, Tapping screw
7、threads DIN EN ISO 2702, Heat-treated steel tapping screws Mechanical properties DIN EN ISO 3269, Fasteners Acceptance inspection DIN EN ISO 3506-4, Mechanical properties of corrosion-resistant stainless steel fasteners Part 4: Tap-ping screws DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN
8、 ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C DIN EN ISO 10664, Hexalobular internal driving feature for bolts and screws DIN EN ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings DIN 34819:2008-05 4 3 Dimensions Screw dimens
9、ions shall be as given in Figure 1 and Table 1. Figure 1 Dimensions of hexalobular socket raised head tapping screws with collar (notation) DIN 34819:2008-05 5 Table 1 Screw dimensions Dimensions in millimetres Thread size ST2,9 ST3,5 ST4,2 ST4,8 (ST5,5) ST6,3 Pa1,1 1,3 1,4 1,6 1,8 1,8 abmax. 1,1 1,
10、3 1,4 1,6 1,8 1,8 damax. 3,5 4,1 4,9 5,6 6,3 7,3 Nominal size = max. 7,5 9,0 10,0 11,5 13,0 14,5 dcmin. 6,92 8,42 9,42 10,8 12,3 13,8 Nominal size = max. 2,35 2,6 3,05 3,55 3,8 4,55 k min. 2,10 2,35 2,75 3,25 3,5 4,25 max. 6,24 7,29 8,29 9,29 10,09 12,35 dhmin. 5,76 6,71 7,71 8,71 9,51 11,65 max. 0,
11、8 0,9 1,1 1,35 1,6 1,8 c min. 0,6 0,7 0,9 1,05 1,2 1,4 r min. 0,1 0,1 0,2 0,2 0,25 0,25 rf 3,2 3,8 4,3 4,8 5,5 6,6 Type C 2,6 3,2 3,7 4,3 5,0 6,0 ycReference dimension Type F 2,1 2,5 2,8 3,2 3,6 3,6 Type R 2,7 3,2 3,6 4,3 5,0 No. 10 15 20 25 25 30 Hexalobular socket A Reference dimension 2,8 3,3 3,9
12、 4,5 4,5 5,6 t max. 1,27 1,40 1,80 2,03 2,03 2,42 min. 1,01 1,14 1,42 1,65 1,65 2,02 ldTypes C and R Type F Mass ( = 7,85 kg/dm3) in kg/1 000 units Nominal size min. max. min. max. 4,5 3,7 5,3 3,7 4,5 6,5 5,7 7,3 5,7 6,5 0,58 9,5 8,7 10,3 8,7 9,5 0,68 1,03 1,50 2,15 13 12,2 13,8 12,2 13 0,80 1,20 1,
13、75 2,48 3,36 4,97 16 15,2 16,8 15,2 16 0,91 1,35 1,97 2,76 3,74 5,47 19 18,2 19,8 18,2 19 1,01 1,49 2,18 3,04 4,11 5,98 22 21,2 22,8 20,7 22 1,11 1,64 2,40 3,32 4,49 6,48 25 24,2 25,8 23,7 25 1,22 1,79 2,61 3,80 4,86 6,99 32 30,7 33,3 30,7 32 1,46 2,13 3,11 4,24 5,73 8,15 38 36,7 39,3 36,7 38 1,66 2
14、,43 3,54 4,82 6,48 9,16 45 43,7 46,3 43,5 45 1,91 2,77 4,04 5,47 7,35 10,34 50 48,7 51,3 48,5 50 2,16 3,07 4,40 5,94 7,97 11,18 NOTE The range of commercially available lengths is between the stepped lines. aP = pitch of thread. bDistance between last fully formed thread and bearing face. cLength of
15、 incomplete thread as in DIN EN ISO 1478. dSizes identified by a dash () are not available. DIN 34819:2008-05 6 4 Technical delivery conditions Table 2 Technical delivery conditions Material Steel Stainless steel Screw thread and thread end Standard DIN EN ISO 1478 Material St A2-20H, A4-20H, A5-20H
16、 Mechanical properties Standards DIN EN ISO 2702 DIN EN ISO 3506-4 Product grade A Limit deviations and geometrical tolerances Standard DIN EN ISO 4759-1 Hexalobular socket Standard DIN EN ISO 10664 As processed Surface finish DIN EN ISO 4042 shall apply with regard to electroplating. DIN EN ISO 106
17、83 shall apply with regard to non-electrolytically applied zinc flake coatings. Acceptance inspection DIN EN ISO 3269 shall apply with regard to acceptance inspection. 5 Designation Designation of an ST3,5 hexalobular socket raised head tapping screw with collar (ST3,5), made of steel (St), with typ
18、e R thread end (R), and with a nominal length l = 16 mm: Tapping screw DIN 34819 ST3,5 16 St R Designation of an ST3,5 hexalobular socket raised head tapping screw with collar (ST3,5), made of grade A4 stainless steel of hardness class 20 (A4-20H), with type R thread end (R), and with a nominal length l = 16 mm: Tapping screw DIN 34819 ST3,5 16 A4-20H R DIN 34819:2008-05 7 Bibliography DIN 968, Cross recessed pan head tapping screws with collar DIN 4000-160, Tabular layout of product properties Part 160: Fasteners with external thread
