1、ASD STANDARD NORME ASD ASD NORM prEN 4634 Edition P 1 January 2008 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 763 3565 - www.asd-stan.orgICS: Descriptors: ENGLISH VERSION Aero
2、space series Screws, 100 countersunk head, six lobe recess, short thread, in heat resisting steel FE-PA2601 (A286), passivated Classification: 900 MPa (at ambient temperature) / 650 C Srie arospatiale Vis, 100 tte fraise, filetage court, empreinte six lobes, en acier rsistant chaud FE-PA2601 (A286),
3、 passives Classification : 900 MPa ( temprature ambiante) / 650 C Luft- und Raumfahrt 100 Senkschrauben, kurzes Gewinde, Sechs-Bogenzahn, aus hochwarmfester Stahl FE-PA2601 (A286), passiviert Klasse: 900 MPa (bei Raumtemperatur) / 650 C This “Aerospace Series“ Prestandard has been drawn up under the
4、 responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publicati
5、on of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European
6、 Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards co
7、nflicting with the EN. Edition approved for publication 31 January 2008Comments should be sent within six months after the date of publication to ASD-STAN Mechanical Domain Copyright 2008 by ASD-STAN prEN 4634:20082 Contents Page Foreword2 1 Scope 3 2 Normative references 3 3 Required characteristic
8、s.3 3.1 Configuration Dimensions Tolerances Masses.3 3.2 Materials .3 3.3 Surface treatment 4 3.4 Tolerances of form and position4 4 Designation 5 5 Marking .6 6 Technical specification .6 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After i
9、nquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4634:20083 1 Scope This standard specifies the characteristics of screws with 100 countersunk head, with six lobes recess, sh
10、ort thread, in heat resisting steel FE-PA2601, passivated, for aerospace applications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of
11、 the referenced document (including any amendments) applies. ISO 3353-1, Aerospace Lead and runout threads Part 1: Rolled external threads. ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts. ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position. EN 2
12、399, Heat resisting steel FE-PA92-HT Rm 900 MPa Bars for forged bolts D 25 mm Aerospace series. 1)EN 2424, Aerospace series Marking of aerospace products. EN 2516, Aerospace series Passivation of corrosion resisting steels and decontamination of nickel base alloys. EN 2576, Aerospace series Bolts in
13、 heat resisting steel FE-PA92HT (A286) Classification: 900 MPa/650 C Technical specification. 2)EN 3639, Aerospace series Heat resisting alloy FE-PA2601 Softened and cold worked Wire for forged fasteners D 15 mm - 900 MPa Rm 1100 MPa. 2)EN 3911, Aerospace series Six lobe recess Geometrical definitio
14、n. 2)TR 3775, Aerospace series Bolts and pins Materials. 3)3 Required characteristics 3.1 Configuration Dimensions Tolerances Masses See Figure 1 and Table 1. Dimensions and tolerances are in millimetres and apply after surface treatment. 3.2 Materials EN 2399, EN 3639, TR 3775 1) Published as ASD S
15、tandard at the date of publication of this standard. 2) Published as ASD Prestandard at the date of publication of this standard. 3) Published as ASD Technical Report at the date of publication of this standard. prEN 4634:20084 3.3 Surface treatment EN 2516 3.4 Tolerances of form and position ISO 79
16、13 Values in micrometres apply prior to surface treatment. Remove sharp edges 0,1 to 0,4. Key 1 Not concave 2 Pitch diameter 3 Thread 4 Conforms to ISO 3353-1 5 The rounded angle accepted 6 Six lobe recess conforms to EN 3911 7 Marking Figure 1 3,2 0,8 prEN 4634:20085 Table 1 Thread D E F G H K L1 0
17、,2 L2Code Designation h12 min. 0 0,08Ref. Ref. min. Length code min. 030 MJ30,5-4h6h 3 5,6 0,63 4,50 1,3 0,06 003 to 030 3 6 040 MJ40,7-4h6h 4 7,5 0,93 5,78 1,7 0,08 003 to 040 3 7,5 050 MJ50,8-4h6h 5 9,5 0,96 7,71 2,1 0,1 004 to 050 4 9 060 MJ61-4h6h 6 11,5 1,26 9,00 2,6 0,1 005 to 060 5 10 080 MJ8
18、1-4h6h 8 15,4 1,60 12,21 3,4 0,1 006 to 080 6 11,5 100 MJ101,25-4h6h 10 19,3 1,93 15,43 4,2 0,1 008 to 100 8 14,5 120 MJ121,25-4h6h 12 23 2,53 18,00 5 0,1 010 to 100 10 16 Thread a P Q R V Code Designation nom. Tol. nom. Tol. max. min. mm Recess code b 030 MJ30,5-4h6h 0,8 2,3 EN3911-09 040 MJ40,7-4h
19、6h 1 0 0,1 2,9 0 0,5 0,4 0,2 0,13 EN3911-15 050 MJ50,8-4h6h 1,1 3,8 EN3911-20 060 MJ61-4h6h 1,5 0 0,2 4,5 0,5 0,3 EN3911-27 080 MJ81-4h6h 2 0 0,3 6,2 0,7 0,5 EN3911-40 100 MJ101,25-4h6h 2,3 7,9 0,7 0,5 EN3911-45 120 MJ121,25-4h6h 2,8 0 0,5 9,9 0,5 0,8 0,6 0,25 EN3911-50 aConforms to ISO 5855-2. bSee
20、 EN 3911. 4 Designation EXAMPLE Description block SCREW Identity block EN4634-040003 Number of this standard Diameter code (see Table 1) Length code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. prEN 4634:20086 5 Marking See Table 2 and Figure 1. Table 2 Diameter code EN 2424 Style 030 to 050 F 060 to 120 C + MJ 6 Technical specification EN 2576
