1、UDC 621.882.y.3 DEUTSCHE NORMEN September 1974 DIN Bolted Connections with Reduced Shank Survey, Range of Application and Examples of Installation Part I Schraubenverbindungen mit Dehnschaft; OberSicht, Anwendungsbereich und Einbaubeispiele Contents Page 1.Sumrey . 1 2. RanKe of application 1 3. EKa
2、mDles of installation 2 3.1. Stud-bolts 2 3.1.1. Stud-bolts with hexagon nuts 2 3.1.2. Stud-bolts with cap nuts 4 3.2. Studs 6 3.2.1. Studs with hexagon nuts 6 3.2.2. Studs with cap nuts 8 Explanations . 9 Dimensions in mm I. Survey This Standard consists of the following parts: DIN 2510 Part 1 Bolt
3、ed connections with reduced shank, survey, range ofapplica- ,tion and examples of installation Part 1 Supplementary Sheet -, -, Design studies for bolted connections Part 2 -* Metric thread with large clearance, nominal dimensions and limits Put 3 -9 Stud-bolts Put 4 -* Studs Part 5 -* Hexagon nuts
4、Part 6 -* Cap nuts Part 7 -, Extension sleeves Part 8 -* Threaded holes for studs N o t e : DIN 2510 has so far consisted of only 3 parts. Its now considerably enlarged content has necessitated subdivision into 8 parts. This has enabled a new and convenient arrangement to be adopted and a survey she
5、et is provided by way of introduction. The pre- vious content of Part 1 has now been incorporated in Parta?, 5 and 7 and that of the former Part 3 in Part 6. Part 2 contains, as before, threads for reduced shank bolts. Part 4 and 8 have no predecessors. This rearrangement of the part numbers does no
6、t have any repercussions on the designation of parts. 2. Bange of application Bolted connections with reduced shank according to this Standard are used prima- rily in situations in which the original preloading and the long-term holding power of the bolted connections need to be maintained largely I
7、ntact under condi- tions of alternating mechanical and thermal stressing (see also Explanations). Continued on pages 2 to 9 Explanations on pages 9 to 11 Page 2 DIN 2510 Part 1 3.1.1. Table 1 Stud-bolts uith hexagon nuts Exten- sion sleeve Example No 1 2 3 4 5 6 For Footnotes see page 3 Stud- bolt i
8、exagon nut Illustration Remark -5 Centring by stud-bolts 11 = grip + 2 cl Bolt length II graduated in rises of 1 mm to 1 mm 1 NF Centring by stud-bolts and extension sleeves 11 = grip + 2 CI Bolt length 11 graduated in rises of 1 mm to 1 mm 1 E NF Centring by hexagon nuts 1, = grip + 2 cl Bolt lengt
9、h 11 graduated in rises of 1 mm to 1 mm NF TF -. D Centring by hexagon nuts and extension sleeves 11 = grip + 2 c2 Bolt length 11 graduated in rises of 1 mm to 1 mm Grip - Centring by stud-bolts 11 = grip + 2 cj2) Bolt length 11 graduated in rises of 5 mm to 5 mm Z NF -Grip 4 3 Centring by stud-bolt
10、s and extension sleeves 11 = grip + 2 cj2) Bolt length LI graduated in rises of 5 mm to 5 mm Z E NF I, DIN 2510 Part 1 Page 3 466 493 53 n Table 2 1 I I I 433 49 463 52 49 56 53 60 112 120 134 150 160 175 186 206 216 226 236 261 1 07 112 0,95 0,94 0,95 3 117 122 0,96 0,95 0,96 3 1 32 136 096 0,95 0,
11、96 3 148 153 0,97 0,96 0,97 4 162 167 0,97 0,96 0,97 4 178 183 0,97 0,96 0,97 4 186 191 - 0,96 - 4 206 211 - 0,97 - 4 222 228 - 0,97 - 4 240 246 - 0,97 - 4 252 258 - 0.97 - 4 272 278 - 0,?7 - 4 I max. Example and2 3 and4 5and6 18 22 26 31 34 38 33 I 33 I 33 M 20 24 M 24 24 29 M 27 27 32 M30 36 I 37
12、al 48 0,91 488 0,93 2 I :; I g9 I :;i I ; I M 33 M 36 M 39 41 45 48 53 52 63 51 54 58 69 66 78 M 42 M 45 M 52 M 56 M 64 M 72x6 M 80x6 M 90x6 M100x6 MllOx (M 120 x 6) M125x8 M140x8 (M150x8) M160x8 (M 170 x 8) M180x8 M 48 62 66 75 84 81 1 O0 64 70 83 91 1 o1 78 74 81 86 96 I l 109 119 129 111 121 131
13、133 128 148 143 153 168 163 178 173 188 Bracketed threads should be avoided where possible. 1 When the K stud-bolt is used a tolerance of only +0.5 mm is permitted for dimension e (= flange thick- *) It is recommended that the calculated nominal length 11 be rounded so that it ends in the figures O
14、or 3, Dimensions c3 allow for: ness - ti). This tolerance must therefore be marked in the drawing. 5; this, however, must not cause c3 mar. to be exceeded. a) Thread length y for centring stud-bolts Z (y = 3 mm up to 4 24, y = 5 mm from M 27 to M 56, y I 6 mm b) 1 % max. permanent extension in the c
15、ase of reduced shanks with lengths 5 5 dl c) Tolerances of bolts and nuts according to DIN 267 Part 13, type m, and of flange according to above N 56) DIN 2519, machined type. 4, Ratio of bearing thread length It (measured on effective diameter) to thread diameter di. In the event of big discrepanci
16、es between the tensile strengths of the bolt and nut material, it is this dimension, plus the wall thickness of the nut, which determines the holding power of the bolted connection. 5) If sinkings or spot faces are provided in flanges, dimension d2 is recommended as the sinking diameter or facing di
17、ameter. 6, The sinking diameter d3 shall ensure that the nut or extension sleeve is positioned as concentrically as possible relative to the medium clearance hole according to DIN 69. The sinking diameter d4 allows full use to be made of the clearance between the thread diameter and the medium clear
18、ance hole accord- ing to DIN 69. Page 4 DIN 2510 Part I 3.1.2. Stud-bolts with cap nuts Table 3 Example No 1 2 3 4 Illustration Stud- bolt - KU KU zu. zu Exten- sion sleeve - - D E Cap nut AF BF AF AF Remark Centring by cap nuts 1, = grip + c4 + c5 Bolt length 11 graduated in rises of 1 mm to 1 ma C
19、entring by cap nuts and extension sleeves 11 = grip + c6 + c7 Bolt length 11 graduated in rises of 1 mm to 1 mm Centring by stud-bo ts Bolt length 11 graduated in rises of 5 mm to 5 mm 11 = grip + c4 + c8 B ) Centring by stud-bolts and extension sleev s Bolt length 11 graduated in rises of 5 mm to 5
20、 mm II = grip + c4 + c8 8 ) For Footnotes see page 5 DM 2510 Part I Page 5 Table 4 Thread dl M 12 M 16 M20 M 24 MW M30 M 33 M36 M 39 M 42 M 45 M 48 M 52 M 56 M4 M 72x6 M 80x6 M 90x6 M100x6 1,/dl4i a1 7 c4 c5 c6 c7 ci) 36) 46) this, however, must not cause c9 max. to be exceeded. a) Thread length y f
21、or centring studs with nut ends P and R (y = 3 mm up to N 24, y = 5 mm from M 27 to H 56, y = 6 mm above M 56) b) 1 $ may. permaneat extension in the case of reduced lengths 5 5 dl c) Tolerances of studs according to DIN 267 Part 13, type f, and of nuts according to DIN 267 Part 13, type m, and of f
22、lange thicknesses, medium according to DIN 7168 Page 8 3.2.2. Studs with cap nuta Table 7 DIN 2510 Part I Example No 1 2 3 4 Illustration - Grip-.-,-I 11 - Grip-3 11 Stud - GQ, HQ, es or HS GQ, HQ, GS or HS Hetal end G tr,-;Larip- Metal end H 1 Remark 11 = grip + c5 + t2 11 = grip + c5 + t or Bolt l
23、ength (1 graluated in rises of 1 mm to I mm 11 (1 = grip + c7 + t grip + 07 + t2 OF Bolt length 11 graiuate in riaes of 1 mm to 1 mm il = grip + cl0 + t26) or 11 = grip + Cl0 + tp1 Bolt length 11 graduated in rises of 5 mm to 5 mm 11 = grip + cl0 + t216) or 11 = grip + cl0 + t36) Bolt length 11 grad
24、uated in rises of 5 mm to 5 mm DIN 2510 Part 1 Page 9 Thread “2e) c5 c7 c107) dl d;) M 12 M 16 M20 M 24 M 27 M 30 M 33 M 36 M 39 M 42 M 45 M 48 M 52 M 56 MU M 72x6 M 80x6 M 90x6 min. 6,l 6,2 63 7,8 8,6 103 9 11A 93 14 11,P 12,7 132 10,2 117 14,6 14,l 133 13 MlWx6 MllOx6 (M120x6) min. 18 16 14 21 19
25、18 25 23 22 73292727 32 30 30 9,6363433 39 37 36 42 40 39 45 43 42 48 46 45 51 49 48 56 54 51 59 57 55 64 62 59 72 70 67 80 78 75 87 85 82 97 95 91 106 104 100 115 113 109 124 122 118 mar. 18 26 31 46 49 52 55 59 71 79 86 95 104 113 122 23 2228 33 37 3443 3747 4052 4356 61 66 71 76 81 6386 96 107 11
26、7 132 148 162 178 153 167 183 The bracketed thread should be avoided where possible. 4, and 6, see page 3 16) It is recommended that the calculated nominal length be rounded 80 that it ends in the figures O or 5. In the case that for a2 min. a smaller dimension as indicated in the Table is permissib
27、le, cq0 is enlarged correspondingly. a) Thread length y for centring studs with nut ends P and R (y = 3 mm up to M 24, y = 5 mm from I4 27 b) 1 $ mar. permanent extension in the case of a reduced length 5 5 dl c) Tolerance of studs according to DIN 267 Part 13, type f, and of nuts according to DIN 2
28、67 Part 13, 17) Dimensions cl0 and a2 min. allow for: to H 56, y = 6 mm above M 56) type m, and of flange thiCkne86e6, medium according to DIN 7168. 18) a2 min. = Minimum residual clearance for Examples 3 and 4. For Examples 1 and 2 the minimum residual clearances are partly larger. 4 122 127 0,92 0
29、,9 4 131 . 136 0,93 0,9 4 140 145 0,93 0,9 Explanations In this issue of DIN 2510 Part 1, Beptember 1974 issue, the only change compared with the August 1971 issue is that the type letter 6pbOb A and B for cap nuts according to DIN 2510 Part 6 have been changed to AF and BF. This change in the type
30、letter symbols has become necessary for reasons of alignment with the new issue of DIN 2510 Part 6, September 1974 issue, which is appearing at the same time as thi6 Stand- ard. The object of this was to bring about a needed clarification of the type letter symbols A and B orig- inally taken over in
31、 DIN 2510 Part 6, August 1971 issue, from the August 1963 issue of DIN 2510 Part 3, and hence of the DIN designations used hitherto for cap nuts; for doubts have been expressed in the mean- time that the possibility of confusion could not be eliminated if reference continued to be made to the old pr
32、ovisions (DIN 2510 Part 3, August 1963 issue). To allow an improved understanding of the enlargements made in the 1971 issues and of the subdivision of the standards existing up to that time on the subject of bolted connections with reduced shank (DIN 2510 Part 1 to Part 3) into DIN 2510 Part 1 to P
33、art 8, the Explanations of the August 1971 issue of DIN 2510 Part 1 are repeated below unabridged and with unchanged wording: Explanations to the August 1971 issue: The present Parts 1 to 8 of DIN 2510 contain an amended and enlarged version of the former Parts 1 to 3. The new Part 1 contains a surv
34、ey and the connection with the earlier Parts is explained. All particulars regarding type, materials and testing6 are grouped in DIN 267 Part I3 - Bolts, screws, nuts and similar threaded and formed parts, technical conditione of delivery, bolt6 and nuts primarily of steels exhibiting toughness at s
35、ubzero temperatures and high temperature steels. Page IO DIN 2510 Part 1 Nominal dimensions for threads M 12 to M 64 according to DIN 13 Part 1, M 72 X 6 to M 120 X 6 according to DIN 13 Part IO, M 125 X 8 to M 180 x 8 according to DIN 13 Part 11. The basic allowances required for ensuring an adequa
36、te minimum clearance between the bolt thread and the nut thread have been re-defined. At elevated temperatures the basic allowance formerly specified was not always sufficient to preclude seizing of the thread. The basic allowances are graduated according to nominal Basic allowance acc to DIN I3 Par
37、t 15 at present stili circulating as draft) Thread to 56 2,5 e 3e 3,5 e 4e 4,5 e M 64 to M 90 X 6 . M 100 6 to M 120 6 - M 125 x 8 to M 150 x 8 M 1 60 x 8 to M 1 80 x 8 *I See also e.g.: Wiegand/Illgner: Berechnung und Gestaltung von Schraubenverbindungen Theoretical design and geometry of bolted co
38、nnections), Springer-Verlag, Berlin/Gttingen/Heidelberg t1962j and Empfehlungen fr Schraubenverbindungen im Bereich hherer Temperaturen (Recommendations for bolted con- nections for duty at elevated temperatures). Published by the Vereinigung Deutscher Elektrizittswerke e.V. - VDEW, Verlags- und Wir
39、tschaftsnesellschaft der Elektrizittswerke m.b.R., Frankfurt/Main. *I At present still circulating as draft- DIN 2510 Part 1 Page 11 Thread previous With types P and R it is ensured that the flange can be centred by the bolt thread in the clearance hole, and also that all the turns of the nut thread
40、 are fully occupied by the bolt thread. If this were not so, corrosion in the turns of the nut thread might make dismantling considerably more difficult. Types Q and S have been so specified that the 70 countersinking of the hexagon nut according to DIN 2510 Part 5 is outside the full bolt thread wh
41、en the chamfer z1 of the stud protrudes from the nut. This factor, combined with the 20 slope on the stud and the close gradation of the nominal lengths effects satisfactory load distribution over the individual turns of the thread. Types q and f for studs correspond with the same types for stud-bol
42、ts and are subject to the same restric- tion that type f must be specially agreed when ordering. In D I N 2 5 1 O P a r t 5 the previous Standard DIN 2510 Part 1 with a view to securing the largest possible bearing faces. In the case of type NF the bearing diameter has been so correlated with the wi
43、dth across flats of the nuts that a maximum of bearing face results after allowance is made for the tolerance on the width across flats as specified in DIN 267 Part 13. In the case of type TF the centring diameter has been reduced for the same reasons. The centring diameters of the internally centre
44、d hexagon nuts and of the internally centred cap nuts agree for both kinds of nut. Gince absolute interchangeability is not possible with the hexagon nuts used so far, the designations of the nuts (type letter) have been altered. For the sake of load-carrying capacity the nut height has been specifi
45、ed uniformly as 1 - dl in view of the reduced flank overlap resulting from the IS0 profile. Ae before, because of the bearing faces required it has not been possible to give nuts with dimensione up to M 20 standard widths across flats, e.g. according to DIN 934; instead it has been necessary to assi
46、gn to them the next larger width across flats. For sizes M 24 and upwards, however, the widths across flats and their correlation with thread diameters agree with the internationally recognized widths across flats for hexagon head bolt6 and nuts. Minimum dimensions across hexagon corners, depending
47、on the type concerned, have been taken over from DIN 475 Part 1. These are internationally recognized dimensions which are intend- ed to ensure proper functioning of the hexagon and the corresponding spanner. When cap nuts according to D I N 2 5 1 O P a r t 6 are used a nore compact arrangement of t
48、he bolted parts is obtained than with the use of hexagon nuts, since in the case of the latter the larger hex- agon associated with the same thread diameter necessitates larger pitch circle diameters and increased cen- tre-to-centre distances. Dimension 13 allows a depth of bolt engagement which cor
49、responds to a bearing thread length of not less than 0.9 X the nominal diameter of the thread and whlch allows a gradztion of bolt length in rises of 5 to 5 mm. It has been necessary, however, to adopt a slope of 45O from diameter g to diameter d4 to ensure that a minimum clearance a remains between the bolt and face and the end face of the undercut in accordance with DIN 2510 Part 1. the hexagon nuts of types NI? and TF have been modified compared with P.1 12 M 16 f.4 28 Pt 24 fd 27 M 39 24 26 32 36 40 A4 Bore d4 takes the point carrying spanner flats on stud. bolts
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