1、Unhardened taper pins with internal thread English version of DIN EN 28 736 (IS0 8736 : 1986) Kegelstifte mit Innengewinde, ungehrtet (IS0 8736 : 1986) DIN - EN 28 736 This standard incorporates the English version of Is0 8736. Supersedes DIN 7978, February 1977 edition. EN Standard European Standar
2、d EN 28 736 : 1992 has the status of a DIN Standard. A comma is used as the decimal marker. DIN EN Standard National foreword The publication of this standard is in keeping with a decision made by CEN/TC 185 to adopt, without alteration, a series of IS0 Standards covering parallel and taper pins as
3、European Standards. The responsible German body involved in their publication is the Normenausschu Mechanische Verbindungselemente (Fasteners Standards Committee). As a consequence, all DIN Standards covering such pins have been superseded by the corresponding DIN EN Standards (see table below). 22
4、338 22 339 28 733 28 734 28 735 22 338 Unhardened parallel pins 7 22 339 Unhardened taper pins 1 28 733 Unhardened parallel pins with internal thread 7979 28 735 Hardened parallel pins with internal thread 7979 28 734 Hardened parallel pins 6325 Title 28 736 28 736 28 737 28 737 Previous DIN Standar
5、d Unhardened taper pins with internal thread Unhardened taper pins with external thread 7978 7977 See National appendix for guideline values for the mass of taper pins not given in the European Standard. It should be noted that IS0 Standard IS0 965, to which reference has been made in clause 2, has
6、been superseded by The DIN Standards corresponding to the IS0 Standards referred to in clause 2 of the EN are as follows: IS0 Standard DIN Standard IS0 965 IS0 2081 DIN 50 961 IS0 3269 The DIN 4000-9-1 tabular layout of article characteristics applies for pins as covered here. IS0 965-2. DIN 13 Part
7、 13 DIN IS0 3269 (at present at the stage of draft) Continued overleaf. EN comprises 6 pages. Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen) 04.93 DIN EN 28 736 Engl. Price group 7 Sales No. 11 07 Page 2 DIN EN 28 736 Standards referred to (and not inclu
8、ded in References) DIN 13 Part 13 IS0 metric screw threads; series of preferred sizes for screws, bolts and nuts from 1 mm to 52 mm diameter and limits of sizes DIN 4000 Part 9 Tabular layout of article characteristics for bolts, screws, pins, rivets, keys, and lock washers DIN 50 961 Chromating of
9、zinc and cadmium coatings on iron and steel Previous editions DIN 7978: 08.56, 06.63, 02.77 Amendments In comparison with DIN 7978, February 1977 edition, the following amendments have been made. a) The nominal diameter of 14 mm has been dropped. b) The specifications for the nominai lengths and the
10、ir tolerances have been amended. c) Some values of t, have been changed. d) The material hardness has been specified. e) The standard designation has been changed. f) Guideline values for the mass of taper pins have been given in a National appendix. International Patent Classification F 16 B 19/02
11、EUROPEAN STANDARD NORME EUROPEENNE EUROPAISCHE NORM EN 28 736 July 1992 UDC 621.886.1 15 Descriptors: Fasteners, pins, taper pins, specifications, dimensions, designation. English version Taper pins with internal thread, unhardened (IS0 8736 : 1986) Goupilles de position coniques a trou taraud, non
12、trempes (IS0 8736 : 1986) Kegelstifte mit Innengewinde, ungehrtet (IS0 8736 : 1986) This European Standard was approved by CEN on 1992-07-17 and is identical to the IS0 Standard as referred to. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions fo
13、r giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official
14、 versions (English, French, German). Aversion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgi
15、um, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stass
16、art 36, 8-1050 Brussels O 1992. Copyright reserved to all CEN members. Ref. No. EN 28 736 : 1992 E Page 2 EN 28 736 : 1992 1 Foreword In 1992, CEN/TC 185 Threaded and unthreaded fasteners and accessories, the Secretariat of which is held by DIN, decided to submit International Standard IS0 8736 : 19
17、86 Taper pins with internal thread, unhardened to Formal Vote. The result was positive. In the countries bound to implement this European Standard, a national standard identical to this European Standard shall be published, and conflicting national standards withdrawn, by 1993-01 -31 at the latest.
18、In accordance with the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdo
19、m. Endorsement notice The text of the International Standard IS0 8736 : 1986 was approved by CEN as a European Standard without any modifi- cation. Page 3 EN 28 736 : 1992 1 Scope and field of application This International Standard specifies the characteristics of unhardened taper pins with interna
20、l thread, and metric dimensions and nominal diameters, d, from 6 to 50 mm inclusive. 2 References IS0 965, IS0 general purpose metric screw threads - Tderances. IS0 2001. Metafic coatings - fecoplated coatings of zinc on iron or steeu! IS0 3269, Fastemm - Acceptance inspection. IS0 4620. Chromte con
21、version cmtings on electroplated zinc and cadmium coatings. Page 4 EN 28 736 : 1992 3 Dimensions Type A (ground pins) : Surface finish Ra = 0,8 vm Type B (turned pins) : Surface finish R, = 3,2 pm nom. min. max. 16 15.5 16,5 18 17.5 18,5 22 21.5 22,5 24 23.5 24.5 m 25.5 26.5 28 27.5 28.5 30 29.5 30.
22、5 32 31,5 32.5 35 34,5 355 40 39.5 40,5 46 44,5 45,5 m 19.5 205 X n Range X Dimensions in millimetres 1) Other tolerances, for example all, cll, f8, as agreed beween customer and supplier. 2) P = thread pitch. 3) For nominal lengths above 200 mm, steps of 20 mm. Page 5 EN 28 736 : 1992 r- Surface fi
23、nish 4 Specifications and reference International Standards Taper Acceptability I Screwthread I Metric screw thread with tolerance 6H to IC0 965. I The taper shall be inspected by use of an adequate optical comparator. The acceptance procedure is covered in IS0 3269. Meterial r St = Free-cutting ste
24、el, hardness 125 to 245 HV. I Other materials as agreed between customer and supplier. Plain, .e. pins to be supplied in natural finish, treated with rust-preventative lubricant, unless otherwise specified by agreement between custom and supplier. Preferred coatings are black oxide, phosphate coatin
25、g or zinc plating with chromate conversion coating (see IS0 2081 and IS0 45201. Other coatings as agreed between customer and supplier. All tolerances shall apply prior to the application of a plating or coating. I Workmanship Parts shall be uniform in quality and free of irregularities or detriment
26、al defects. 1 No burrs shall amear on anv Dart of the Din. 5 Designation Example for the designation of an unhardened steel taper pin, type A, with internal thread, nominal diameter dl = 6 mm and nominal length I = 30 mm : Taper pin IS0 8136 - A - 6 x a) - St Page 6 EN 28 736 : 1992 6 8 National app
27、endix (informative) Mass of taper pins The values given are auideline values. 10 12 16 20 25 30 40 50 Size mgth 16 18 20 22 24 26 28 30 32 35 40 45 4,28 4,79 5,31 5,84 6,37 6,91 7,73 9,13 1 0,5 12,o 13.5 15,1 50 55 60 65 70 75 7,28 10,7 8.12 12,o . 9,02 13,4 16,5 9,92 14,7 144 10,8 16,l 20,4 11,8 17
28、,5 22,3 13,l 19,6 25,3 15,5 23,2 30,3 17,9 26,8 354 20.4 30.5 40,6 22.9 342 45,8 25,5 38,i 51 ,1 80 85 90 95 100 120 140 160 180 200 42,5 51,1 59,9 68,7 77,7 863 78,0 91 ,o 105 118 132 Tilq-T- 3.77 I 6,41 144 165 186 208 229 251 246 276 307 337 I I 1 42,O 45,9 49,9 54,O 58,2 62,4 56,5 62,O 67,6 73,2 78,9 84,7 90,s 964 121 246 370 502 572 272 294 316 338 361 452 546 642 74 1 843 885 1022 1163 708 762 81 5 869 923 1143 1366 1594 1826 2062 2072 241 9 2770 31 26
