1、 DEUTSCHE NORM September 2005DIN 1478 ICS 21.060.70 Supersedes DIN 1478:1975-09. Turnbuckles made from steel tubes or round steel bars Spannschlossmuttern aus Stahlrohr oder Rundstahl Document comprises 8 pagesTranslation by DIN-Sprachendienst. In case of doubt, the German-language original should b
2、e consulted as the authoritative text. No part of this translation may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen). English price group 6 www.din
3、.de www.beuth.de !,ohk“09.06 9766972DIN 1478:2005-09 2 Foreword This standard has been prepared by Technical Committee FMV-AA 3.12.2 Spannschlsser of the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee). The revision of this standard was considered necessary since the
4、proper length of engagement of the connecting component could not be easily checked when using turnbuckles of the type specified in the September 1975 edition. However, in order to ensure the safe use of such turnbuckles, particularly in the field of structural bolting, the length of engagement of t
5、he connecting component needs to be at least equal to length t. The control bore on the turnbuckles specified here ensures this. The DIN 4000-2-8.4 tabular layout of article characteristics shall apply to turnbuckles covered in this standard. NOTE Parts of DIN 4000-2 are intended to be superseded by
6、 DIN 4000-161 in which case the DIN 4000-161-6 tabular layout of article characteristics will apply to turnbuckles complying with this standard. Amendments This standard differs from DIN 1478:1975-09 as follows: a) The title of the standard has been changed. b) Clause 1 Scope has been included. c) D
7、imensional tolerances have been specified. d) For M16 to M48 turnbuckles, the minimum diameter d3has been amended. e) Measurement of coaxiality by gauging has been introduced (see clause 5). f) Grade L 235 or S235JR steel is now used instead of grade St 37 steel. g) For M48 turnbuckles, grade St50-2
8、 steel has been replaced by grade S355JR steel. h) Turnbuckles up to size M48 may now also be made of grade L 355 steel. i) Grade A4 stainless steel has been introduced. j) For threads, tolerance 6H has been specified. k) The designation has been amended. l) The designation of a complete turnbuckle
9、(including turnbuckle nut and two welding studs) has been dropped. m) Control bores for checking the position of the welding studs have been specified. n) For turnbuckles made of grade L 355 or S355JR steel, details of marking have been specified. o) Specifications relating to loadability have been
10、included. Previous editions DIN 1478: 1931-07, 1975-09 DIN 1478-1: 1942x-04 DIN 1478:2005-09 3 1 Scope This standard specifies requirements for M6 to M80 turnbuckles made from steel or austenitic steel tubes or round bars. 2 Normative references The following reference documents are indispensable fo
11、r 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 1013-1, Hot rolled round steel for general applications Dimensions and tolerances DIN 4000-2:1999-12
12、, Tabular layouts of article characteristics for bolts, screws and fit bolts DIN 34828, Welding studs for turnbuckles DIN EN 10025, Hot rolled products of structural steels Technical delivery conditions DIN EN 10220, Seamless and welded steel tubes Dimensions and masses per unit length DIN EN 10224,
13、 Non-alloy steel tubes for the conveyance of aqueous liquids including water for human consumption Technical delivery conditions DIN EN ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN ISO 10683,
14、Fasteners Non-electrolytically applied zinc flake coatings DIN EN ISO 10684, Fasteners Hot dip galvanized coatings DIN EN ISO 16048, Passivation of corrosion-resistant stainless steel fasteners DIN ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general pur
15、pose external and internal screw threads Medium quality DIN 1478:2005-09 4 3 Dimensions Turnbuckle dimensions shall be as given in figure 1 and table 1. a) Turnbuckle made from steel tube (for sizes up to M48) (Other dimensions as for a) b) Turnbuckle made from round steel bar (for sizes M56 and abo
16、ve) a Thread at both end faces countersunk at 120 down to the major thread diameter and end faces machined at right angles to the thread axis b Left-hand thread, marked by L c Right-hand thread d Control bore for checking the position of the welding stud e Minimum length of engagement of the connect
17、ing component Figure 1 Turnbuckle dimensions (notation) DIN 1478:2005-09 5 Table 1 Turnbuckle dimensions Dimensions in millimetres Thread size (d1) M6 M8 M10 M12 M16 M20 M24 M30 M36 M42 M48 M56 M64 M72 6 M80 6 Nominal dimension 17,2 17,2 21,3 25 30 33,7 42,4 51 63,5 70 82,5 90 100 110 120 max. 17,7
18、17,7 21,8 25,5 30,5 34,2 42,9 51,51 64,14 70,7 83,33 91,3 101,3 111,5 121,5 d2min. 16,7 16,7 20,8 24,5 29,5 33,2 41,9 50,49 62,86 69,3 81,67 88,7 98,7 108,5 118,5 d3min. 9 12 15 18 22,5 27 32 38 47,5 57 63 Nominal dimension 6 8 8 10 10 12 12 16 16 20 20 25 25 30 30 max. 6,3 8,5 8,5 10,5 10,5 12,5 12
19、,5 16,5 16,5 20,5 20,5 25,5 25,5 30,5 30,5 d4min. 5,7 7,5 7,5 9,5 9,5 11,5 11,5 15,5 15,5 19,5 19,5 24,5 24,5 29,5 29,5 Nominal dimension 4 6 10 max. 4,3 6,3 10,5 d5min. 3,7 5,7 9,5 Nominal dimension 2,9 3,6 4 4 4,5 5 5,6 6,3 8 8,8 10 max. 3,34 4,14 4,60 4,60 5,18 5,75 6,3 7,09 9 9,9 11,25c min. 2,6
20、1 3,24 3,60 3,60 4,05 4,5 5,04 5,67 7,2 7,92 9 15 16 17 18 Nominal dimension 110 110 125 125 170 200 255 255 295 330 355 355 425 425 440 max. 110,8 110,8 126,2 126,2 171,2 201,2 256,2 256,2 296,2 331,2 356,2 356,5 426,5 426,5 441,5 l1min. 109,2 109,2 123,8 123,8 168,8 198,8 253,8 253,8 293,8 328,8 3
21、53,8 343,5 423,5 423,5 438,5 m min. 7,5 10 12 15 20 24 29 36 43 51 58 68 77 87 96 t 9,5 12 14 17 22 26 31 38 46 54 61 73 82 92 101 Length of engage-ment 90 85 95 90 120 140 180 160 180 200 210 190 240 210 210 4 Semi-finished products 4.1 Turnbuckles made of steel For turnbuckles of sizes up to M48,
22、seamless cold drawn tubes of grade L 235 or L 355 steel as in DIN EN 10224 shall be used. The nominal dimensions of the tubes shall be as specified in DIN EN 10220. For turnbuckles of sizes M56 and above, round bars as in DIN 1013-1 made of grade S235JR or S355JR steel as in DIN EN 10025 shall be us
23、ed. 4.2 Turnbuckles made of stainless steel Grade A4 austenitic steel as in DIN EN ISO 3506-2 shall be used. 5 Coaxiality of bores The coaxiality of bores shall be measured by means of a plug gauge as in figure 2 and table 2. The gauge shall pass through the bore in a vertical position under its own
24、 weight and without excessive force (see figure 2). DIN 1478:2005-09 6 Table 2 Plug gauge dimensions Dimensions in millimetres l2d6Thread size (d1) Nominal dimension Limit deviations M6 120 4,86 00000120,M8 120 6,57 00000150,M10 150 8,28 00000150,M12 150 9,99 00000180,M16 200 13,69 00000180,M20 220
25、17,15 00000210,M24 260 20,59 00000210,M30 260 25,99 00000210,M36 300 31,41 00000250,M42 350 36,82 00000250,M48 380 42,23 00000250,M56 380 49,59 00000250,M64 450 57,00 00000300,M72 6 450 64,89 00000300,M80 6 485 72,85 00000300,DIN 1478:2005-09 7 Key 1 Plug gauge 2 Turnbuckle Figure 2 Gauging of coaxi
26、ality 6 Screw threads The threads of turnbuckles shall be metric coarse pitch threads as in DIN ISO 965-2, produced to tolerance 6H. 7 Surface finish DIN EN ISO 4042 shall apply with regard to electroplating. DIN EN ISO 10684 shall apply with regard to hot dip galvanizing. DIN EN ISO 10683 shall app
27、ly with regard to non-electrolytically applied zinc flake coatings. For turnbuckles made of grade A4 steel, passivation in accordance with DIN EN ISO 16048 is required. DIN 1478:2005-09 8 8 Designation Designation of an M12 turnbuckle (SP) with right-hand and left-hand thread, made of steel L 355 (L
28、 355), without special surface finish: Turnbuckle DIN 1478 SP M12 L 355 Designation of an M12 turnbuckle (SP) with right-hand and left-hand thread, made of stainless steel A4 of strength class 50 (A4-50): Turnbuckle DIN 1478 SP M12 A4-50 9 Marking For turnbuckles made of grade L 235 or S235JR steel,
29、 marking is not required. Turnbuckles made of grade L 355 steel shall be marked with the symbol L 355, the marking being imprinted on one of the two threaded ends. Turnbuckles made of grade S355JR steel shall be marked with the symbol S 355, the marking being imprinted on one of the two threaded end
30、s. Turnbuckles made of grade A4 stainless steel shall be marked with the symbol A4-50, the marking being imprinted on one of the two threaded ends. 10 Connecting components Welding studs for turnbuckles complying with this standard are covered in DIN 34828. NOTE Connecting components which are not s
31、tandardized at present may be used, this being subject to agreement. It should, however, be noted that the loadability of such components does not necessarily comply with that of the turnbuckle. 11 Assembly and loadability Turnbuckles complying with this standard shall be assembled with welding stud
32、s as specified in DIN 34828 which are made of the same steel (S235JR or S355JR) or belong to the same property class (A4-50). The loadability of such assemblies is higher than that of the welding studs. When using turnbuckles with connecting components made of other materials, in particular materials of higher strength, the loadability of the turnbuckles shall be determined separately.
