1、DEUTSCHE NORM February 1995 I Hexagon set screws with small hexagon I DIN and full dog point I 561 ICs 21.060.10 Descriptors: Fasteners, screws, set screws. Sechskantschrauben mit Zapfen und kleinem Sechskant In keeping with current practice in standards published by the International Organization f
2、or Standardization (/SO), a comma has been used throughout as the decimal marker. Supersedes February 1985 edition. Dimensions in mm 1 Scope and field of application This standard specifies dimensions and technical delivery conditions for coarse and fine pitch thread M6 to M56 hexagon set screws wit
3、h small hexagon and full dog point, assigned to product grade A. These screws are only to be used as forcing screws (.e. for adjusting and locating purposes when there is considerable resistance to motion). NOTE: For sizes M12 and M16 screws, this standard specifies widths across flats which are in
4、current use, .e. 16 mm and 18 mm, in accordance with IS0 272. Specifications for obsolete widths across flats (17 mm and 19 mm) are provided in Appendix A. Where screws are to comply with specifications other than those given in this standard (e.g. regarding nominal length or property class), these
5、shall be selected in accordance with the relevant standards. Continued on pages 2 to 5. wih Verlag GmbH. Berlin, has the exclusive right of sale for German Standards (DIN-Normen) DIN 561 Engl. Price group 01.96 Sales No.0106 Page 2 DIN 561 2 Dimensions Table 1 : Dimensions M6 M8 M10 M12 M16 M20 M24
6、M30 M36 M42 M48 Thread size M20 M24 M30 M36 M42 M48 x2 x2 x2 x3 x3 x3 - - - - - p I) 1 1,25 1,5 1,75 2 2,5 3 3,5 4 43 5 al max 3 3,75 4,5 5,25 6 7,5 9 10,5 12 133 15 da may 63 9,2 11,2 13,7 17,7 22,4 26,4 33,4 39,4 456 52,6 4 5,5 7 a,5 12 15 ia 23 28 32 38 max = nominal size min 3,82 5,32 6,78 a,2a
7、ii,73 i4,73 i7,n 22, 27, 31.61 w,6i dP e min 8,79 ii,o5 i4,38 1777 i9,92 26, 33,53 39,9a 51,28 61,3i 72,6i Nominal size 5 6 7 9 11 14 17 21 25 30 34 k min 4.85 5,85 6,82 a,82 10.79 i3,79 169 20.74 24,74 29,74 33,69 max 5,i5 6,i5 7,ia. 9,i8 11,21 i4,2i i7,2i 21,26 25,26 30,26 34,3i k, min 3,4 4,l 4,8
8、 6,2 7.6 9,7 11,8 14,5 17,3 20,8 23,6 r min 0,25 0,4 0,4 0,6 0,6 0,8 0,8 1 1 1,2 1,6 8 10 13 16 18 24 30 36 46 55 65 max = nominal size min 7,78 9,78 12,73 15,73 17,73 23,67 29,67 35,38 45,38 54,26 64,26 min = nominal size max 3,25 4,3 5,3 6,3 8,36 10,36 12,43 15,43 18,43 21,52 24,52 S 3 4 5 6 8 10
9、12 15 18 21 24 22 DIN 78 - Za type o. thread end M56 M56 x3 5,5 16,5 63 45 44,m 83,91 40 39,69 40,3i 27.8 2 75 74,26 28 28,52 15 1LA/ L 1 k, is the minimum wrenching height; e shall be maintained within k,. al as in DIN 76-1, d, and z2 as in DIN 78. u (incomplete thread): 2 P max. I) P = pitch of th
10、read (coarse pitch thread). (continued) DIN 561 Page3 M6 M8 - - M10 M12 M16 M20 M24 M30 M36 M42 M48 MW M20 M24 M30 M36 M42 M48 M5f x2 x2 x2 x3 x3 x3 x3 - - - 7 Thread size 62,6 69,l 75,7 82,3 88,9 102 1 Nomina size I min. I ma. 132 143 233 154 249 176 281 4,26 4,60 4,95 11,4 13,O 14,6 16,l 5,30 5,65
11、1 6,53 7,38 - 19,5 34,l 22,O 37,7 24,4 41.2 26,9 44,8 29,4 48,4 31,9 52,O 59,2 66,4 Approx. mass (7,851 kg/dm3) per 1 O00 units, in kg 115 128 142 9,94 17,O 198 313 220 345 242 377 264 409 473 914 - 1420 2080 2910 1560 2270 3160 1 690 2460 3410 2650 3660 2840 3910 3030 4160 4410 4 660 t 587 I 944 I
12、1410 -2040 634 1 1 O10 1 1510 12160 I 1150 1 1700 1 2410 1280 1890 2660 - 3 12C 3 450 3 780 4110 4 440 4 770 5 100 5 430 - 5 760 6 O90 6 420 - For the range of commercial sizes between the continuous thick lines, values of mass have been specified (for guidance only). Bracketed sizes should be avoid
13、ed if possible. Lengths above 300 mm shall be graded in 20 rnrn steps. Page 4 DIN 561 3 Technical delivery conditions Table 2: Technical delivery conditions Material _ General requirements Thread Tolerance As specified in Mechanical properties Property class (material) As specified in Product grade
14、As specified in Limit deviations and geometrical tolerances Surface finish Acceptance inspection Steel Stainless steel I Nonferrous metal As specified in IS0 8992. DIN 13-15. 14H or 22H A2-50 CuZn) IS0 898-5 I IS03506 I DIN EN 28839. A As processed. Property class 22H: (thermally or chemically) blac
15、kened. IS0 4042 shall apply with regard to electroplating. DIN 267-10 shall apply with regard to hot-dip galvanizing. IS0 4759-1. Bright. - - - Bright. DIN 267-2 shall apply with regard to surface roughness. DIN EN 26 157-3 shall apply with regard to the limits of surface discontinuities. As specifi
16、ed in IS0 3269. I) Copper-zinc alloy CU2 or CU3, at the manufacturers discretion. 4 Designation Designation of an M8 hexagon screw with a nominal length, 1, of 40 mrn and assigned to property class 14H: Hexagon screw DIN 561 - M8 x 40 - 14 H For MI2 and M16 hexagon screws, widths across flats in cur
17、rent use, as specified in IS0 272, shall apply and are to be given in the designation, e.g.: Designation of an MI2 hexagon screw with a nominal length, 1, of 60 mm with a width across flats of 16 mm (SW 16), and as- signed to property class 14H: Hexagon screw DIN 561 - M12 x 60 - SW 16 - 14H The scr
18、ews may also be supplied with a thread undercut (Ri) conforming to DIN 962. In this case, symbol Ri shall be included in the designation, e.g.: Hexagon screw DIN 561 - M8 x 40 - Ri - 14H DIN 962 shall apply to the designation of type and finish, with additional information to be given on ordering. T
19、he DIN 4000-2- 1 tabular layout of article characteristics shall apply to the screws covered in this standard. DIN 561 Page5 Appendix A Widths across flats for replacement and maintenance purposes 17 mm and 19 mm widths across flats are not included in IS0 272, and their further use is deprecated. H
20、owever, should such screws be required as replacement parts, they may still be ordered with the dimensions specified in the table below. For ordering purposes, the following designation may be used (example): Hexagon set screw DIN 561 - M12 x 60 - 14H Table A.l: Obsolete widths across flats I Thread
21、 size I M12 I M16 I I e min max.= 16.73 18.67 Standards referred to DIN 13-15 DIN 76-1 DIN 78 DIN 267-2 DIN 267-10 DIN 962 DIN 4000-2 DIN EN 26 157-3 DIN EN 28839 IS0 272 : 1982 IS0 898-5 : 1980 IS0 3269 : 1988 IS0 3506 : 1979 IS0 4042 : 1989 IS0 4759-1 : 1978 IS0 8992 : 1986 IS0 metric screw thread
22、s; fundamental deviations and tolerances for screw threads of 1 mm diameter and larger Thread run-outs and thread undercuts for IS0 metric screw threads in accordance with the DIN 13 series Thread ends and lengths of projection of bolt ends for IS0 metric screw threads in accordance with the DIN 13
23、series Fasteners; technical delivery conditions; product grades and tolerances Fasteners; technical delivery conditions; hot-dip galvanized components Designation system for fasteners Tabular layouts of article characteristics for bolts, screws and nuts Fasteners; surface discontinuities; bolts, scr
24、ews and studs for special requirements (IS0 61 57-3 : 1988) Mechanical properties of fasteners; nonferrous metal bolts, screws, studs and nuts Fasteners; hexagon products; widths across flats Mechanical properties of fasteners; set screws and similar threaded fasteners not under tensile stresses Fas
25、teners; acceptance inspection Corrosion-resistant stainless steel fasteners; specifications Threaded components; electroplated coatings Tolerances for fasteners: bolts, screws and nuts with thread diameters between 1,6 (inclusive) and 150 mm (inclusive) and product grades A, B and C Fasteners; gener
26、al requirements for bolts, screws, studs and nuts Previous editions DIN 561 : 1922-09, 1923-06, 1938-12, 1951 -01, 1953-06, 1963-04, 1967-1 2, 1985-02. Amendments The following amendments have been made to the February 1985 edition. a) The symbol k has been replaced by k,. b) For size d,. tolerance
27、b13 has been replaced by tolerance h13 as specified in DIN 78. c) The widths across flats have been amended for M12 and M16 screws. d) For property classes, reference is now made to IS0 898-5. e) The technical delivery conditions now also cover stainless steel and nonferrous metal screws. i) For screws with thread undercut, symbol A has been replaced by Ri, in accordance with DIN 962. g) The standard has been editorially revised.
