1、UDC 621.886.115 DEUTSCHE NORM October 1992 Unhardened taper pins with external thread English version of DIN EN 28 737 (IS0 8737 : 1986) DIN EN 28 737 Kegelstifte mit Gewindezapfen, ungehrtet (IS0 8737 : 1986) 22 338 This standard incorporates the English version of Is0 8737. 22 338 Supersedes DIN 7
2、977, February 1977 edition. Unhardened parallel pins Unhardened taper pins Unhardened parallel pins with internal thread Hardened parallel pins Hardened parallel pins with internal thread Unhardened taper pins with internal thread Unhardened taper pins with external thread European Standard EN 28 73
3、7 : 1992 has the status of a DIN Standard. A comma is used as the decimal marker. 7 1 7979 6325 7979 7978 7977 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
4、as 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 As a consequence, all DIN Standards covering such pins have been superseded by the corresponding DIN EN Standards (see table below).
5、EN Standard DIN EN Standard Title Previous DIN Standard 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 It should be noted that IS0 Standard IS0 965, to which reference has been made in clause 2, has been superseded by The DIN Standards corre
6、sponding to the IS0 Standards referred to in clause 2 of the EN are as follows: IS0 965-2. 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. DIN 13 Part 13 DIN IS0 3269 (at present at the stage
7、of draft) Continued overleaf. EN comprises 6 pages. DIN EN 28 737 Engl. Price group 6 Sales No. 1106 Beuth Verlag GmbH, Berlin, has the axclusive right of sale for German Standards (DIN-Normen). 04.93 Page 2 DIN EN 28 737 Standards referred to (and not included in References) DIN 13 Part 13 IS0 metr
8、ic 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 zinc and cadmium coatings on iron and stee
9、l Previous editions DIN 7977: 06.56, 03.61, 02.77. Amendments In comparison with DIN 7977, February 1977 edition, the following amendments have been made. a) The nominal diameter of 14 mm has been dropped. b) The tolerances on length have been amended. c) Some values of z have been changed. d) The m
10、aterial 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 35/00 EUROPEAN STANDARD NORME EUROPEENNE EUROPAISCHE NORM EN 28 737 July 1992 UDC 621.8
11、86.1 15 Descriptors: Fasteners, pins, taper pins, specifications, dimensions, designation. English version Taper pins with external thread, unhardened (IS0 8737 : 1986) Goupilles de position coniques a lon- gueur filete, non trempes (IS0 8737 : 1986) Kegelstifte mit Gewindezapfen, ungehr- tet (IS0 8
12、737 : 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 for giving this European Standard the status of a national standard withou
13、t 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 versions (English, French, German). A version in any other language mad
14、e by translation under the responsibility of a CEN member into its own language and notifled to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
15、 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 Stassart 36,8-1050 Brussels O 1992. Copyright reserved to all CEN members. R
16、ef. No. EN 28 737 : 1992 E Page 2 EN 28 737 : 1992 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 8737 : 1986 Taper pins with external thread, unhardened to Formal Vote. The result
17、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. In accordance with the CENKENELEC Internal Regulations, the following count
18、ries 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 Kingdom. Endorsement notice The text of the International Standard IS0 8737 : 198
19、6 was approved by CEN as a European Standard without any modifi- cation. Page 3 EN 28 737 : 1992 1 Scope and field of application This International Standard specifies the characteristics of unhardened taper pins with external thread, and metric dimensions and nominal diameters, d, from 5 to 50 mm i
20、nclusive. 2 References IS0 966. IS0 general purpose metric scm threads - Tolerances. IS0 2081, Metellic coatings - Electroplated coatings of zinc on iron or steel. IS0 3268, Fasteners - Acceptunce inspection. IS0 4520, Chromate conversion coatings on electroplated zinc and cadmium coatings. Page 4 E
21、N 28 737 : 1992 3 Dimensions dl h1 I 5 0 8 10 12 16 20 E6 30 40 a rnax. I 2.4 3 4 4,5 5.3 6 6 7.5 9 10,5 Surface roughness values in micrometres 60 12 max. 15.6 min. 1 14 b 20 24.5 n 30,5 39 39 45 52 65 70 18 22 24 27 35 35 40 46 50 70 11 P = thread pitch. 2) Other tolerances as agreed between custo
22、mer and supplier. 3) For nominal lengths above 400 mm, steps of 40 mm. I , Page 5 EN 28 737 : 1992 4 Specifications and reference International Standards Screw th-d I Metric screw thread Wim tolerance 6g to IS0 985. 1 Material I St = Frett-cutbing steel, hardness 125.to 245 HV. I ther materiels as a
23、gree between customer and supplier. Surface finish Plain, .e. pins to be supplied in naturai finish, treated with rust-preventative lubricant, unless otherwise specified by agreement berween customer and supplier. Preferred coatings are black oxide, phosphate coating or zinc plating with chromate ca
24、nversion coating (see IS0 a1(11 and IS0 46201. ther coatings as agreed between custm and supplier. All tolerances shall appiy prior to the application of 8 plating or coating. )Woikm.n.hip Parts shall be uniform in qility and free of irregularities or detrimental detects. r No burrs shall mmr on any
25、 oart of the Din. 1 I _ laper I The taper shall be inspected by use of an adequate optical comparator. I Acceptability The acceptance procedure is covered in IS0 3269. I 5 Designation Example for the designation of an unhardened steel taper pin with external thread, nominal diameter dl = 6 mm and no
26、minal length I= Wmm: Taper pin IS0 8737 - 6 x 50 - St Page 6 EN 28 737 : 1992 6 8 10 12 16 20 25 30 40 50 40 5,90 45 6,90 9,60 50 7,990 10,9 55 12,2 20.2 60 13,6 22,7 65 25,2 36,8 75 30,l 443 85 522 74,O 100 63,8 90,7 154 120 113 191 270 - 140 230 328 490 160 272 386 582 795 190 485 720 990 1618 220 870 1190 1948 250 1020 1400 2298 280 1620 2648 320 3149 360 400 2800 3370 3900 4630 5400 6140
