ASD-STAN PREN 4138-2014 Aerospace series Screws pan head offset cruciform recess coarse tolerance normal shank medium length thread in alloy steel cadmium plated Classification 1 1.pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4138 Edition P 2 June 2014 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P 1 of Marc

2、h 1994 and will supersede EN 4138:2009 Descriptors: ENGLISH VERSION Aerospace series Screws, pan head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated Classification: 1 100 MPa (at ambient temperature) / 235 C Srie arospatiale Vis tte cyli

3、ndrique, empreinte cruciforme dporte, tige normale tolrance large, filetage moyen, en acier alli, cadmies Classification : 1 100 MPa ( temprature ambiante) / 235 C Luft- und Raumfahrt Flachkopfschrauben, mit Flgelkreuzschlitz, mittlere Gewindelnge, aus legiertem Stahl, verkadmet Klasse: 1 100 MPa (b

4、ei Raumtemperatur) / 235 C This “Aerospace Series“ Prestandard has been drawn up under the 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

5、the experts of the concerned Domain following member comments. Subsequent to the publication 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

6、review by users and formal agreement of ASD-STAN, it will be submitted as a draft European 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 gi

7、ving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1st June 2014 Comments should be sent within six months after the date of publication to ASD-STAN Mechanical Domain Copyright 2014 by ASD-STAN prEN 4138:2

8、014 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Required characteristics . 4 4 Designation 7 5 Marking . 7 6 Technical specification . 8 Annex A (informative) Standard evolution form . 9 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mech

9、anical Domain. After inquiries 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 4138:2014 (E) 3 1 Scope This standard specifies the characteristics of screws, pan head, offset crucifo

10、rm recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated. Classification: 1 100 MPa 1) / 235 C 2) 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For date

11、d references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2133, Aerospace series Cadmium plating of steels with specified tensile strength 1 450 MPa, copper, copper alloys and nickel alloys EN 2137, Stee

12、l FE-PL75 1 100 MPa Rm 1 250 MPa Bars De 100 mm Aerospace series 3) EN 2424, Aerospace series Marking of aerospace products EN 2442, Steel FE-PL711 1 100 MPa Rm 1 300 MPa Bars and wires De 25 mm Aerospace series 4) EN 3514, Aerospace series Steel FE-PL711 Hardened and tempered 1 100 MPa Rm 1 300 MPa

13、 Bar and wire for bolts De 25 mm 5) EN 9100, Aerospace series Quality Management Systems Requirements for Aviation, Space and Defense Organizations EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts ISO 3353-1, Aerospace Lead and runout threads

14、Part 1: Rolled external threads ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 7689, Aerospace Bolts, with MJ threads, made of alloy steel, strength class 1 100 MPa Procurement specification ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and positio

15、n ISO 14275, Aerospace Drives, internal, offset cruciform, ribbed Metric series 1) Minimum tensile strength of the material at ambient temperature. 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics, after return to ambient temperature. The

16、maximum temperature is determined by the surface treatment. 3) Published as ASD-STAN Standard at the date of publication of this standard. http:/www.asd-stan.org/ 4) For new design, see EN 3514. 5) Published as ASD-STAN Prestandard at the date of publication of this standard. http:/www.asd-stan.org/

17、 prEN 4138:2014 (E) 4 ISO 14276, Aerospace Drives, internal, offset cruciform Metric series TR 3775, Aerospace series Bolts and pins Materials 6) 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply

18、after surface treatment. 3.2 Tolerances of form and position ISO 7913 3.3 Materials EN 2137, EN 2442 or TR 3775: alloy steel, classification 1 100 MPa 6) Published as ASD-STAN Technical Report at the date of publication of this standard. http:/www.asd-stan.org/ prEN 4138:2014 (E) 5 3.4 Surface treat

19、ment EN 2133, thickness 8 m to 14 m, on all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces, a continuous deposit shall be present, but no value is specified. Black colour option: code B. Key 1 Thread 2 Marking 3 Conforms to ISO 3353-1 4 Drive 5 Shape optional 6 L4 L1

20、 (L2) Figure 1 Ramax 0,8 Ramax 1,6 0,4 0,1 Ramax 3,2 prEN 4138:2014 (E) 6 Table 1 Diameter code Threadsa D1 D2 D3 D4 D5 E h12 0 0,3 min. nom. Tol. H13 nom. Tol. 030 MJ30,5 4h6h 3 6 4,7 2,3 0 0,5 1,8 0 0,2 040 MJ40,7 4h6h 4 8 6,7 3,0 1,1 2,4 050 MJ50,8 4h6h 5 10 8,7 3,4 0,5 1,5 3,0 060 MJ61 4h6h 6 12

21、 10,7 4,2 3,6 0 0,3 070 MJ71 4h6h 7 14 12,7 5,2 1,9 4,2 080 MJ81 4h6h 8 16 14,7 6,2 4,8 100 MJ101,25 4h6h 10 20 18,7 7,9 2,4 6,0 120 MJ121,25 4h6h 12 24 22,7 9,8 7,2 Diameter code L1 0,2 b, c L2 L3 R S Mass d Length code nom. nom. Tol. max. min. e f 030 002 to 030 2 to 30 7,5 0,4 0 0,2 1,2 0,3 0,792

22、 0,055 040 002 to 040 2 to 40 10,0 6,0 1,6 0,4 1,922 0,099 050 003 to 050 3 to 50 12,0 7,5 0,5 2,0 0,5 3,835 0,153 060 003 to 060 3 to 60 14,0 8,5 0,7 2,4 0,6 6,620 0,222 070 004 to 070 4 to 70 15,0 9,5 2,8 0,7 10,959 0,302 080 004 to 080 4 to 80 16,5 10,5 3,2 0,8 15,214 0,395 100 005 to 100 5 to 10

23、0 20,5 13,0 0,8 0 0,3 4,0 1,0 30,092 0,616 120 006 to 120 6 to 120 22,5 14,5 0,9 4,8 1,2 52,957 0,887 a In accordance with ISO 5855-2. b Increments: 1 for L1 100. c If greater lengths are required, they shall be chosen using the above increments. The length code corresponds to the length L1, complet

24、ed by one or two zeros to the left, where necessary, to obtain a three digit code. d Approximate values (kg/1 000 pieces), calculated on the basis of 7,85 kg/dm3, given for information purposes only. They apply to screws without holes. e Value for head and first L4. f Increase for each additional mi

25、llimetre of L4. prEN 4138:2014 (E) 7 4 Designation EXAMPLE Description block SCREW Identity block EN4138D050040AB Number of this standard Hole code (see Table 2) Diameter code (see Table 1) Length code (see Table 1) Drive code (see Table 3) Black colour code (see 3.4) NOTE If necessary the originato

26、r code I9005 shall be placed between the description block and the identity block. Table 2 Hole Code with D without (hyphen) Table 3 Drive Code ISO 14275 None ISO 14276 A 5 Marking See Table 4 and Figure 1. Table 4 Diameter code EN 2424 Style 030 and 040 N 050 to 120 B prEN 4138:2014 (E) 8 6 Technic

27、al specification 6.1 General ISO 7689, except for clauses. 6.2 Approval of manufacturers EN 9100 6.3 Qualification of screws EN 9133 prEN 4138:2014 (E) 9 Annex A (informative) Standard evolution form MODIFICATION REASON AND VALIDATION Minus looks like a bullet a references too small Mixture of texts

28、 b reference too small Replacement ISO 7994 BY ISO14275 and ISO 14276 Roughness symbol inside and above the drawing Add to all symbols: max e.g. Ra max 3,2 Ra max 0,8 Modify symbols according to ISO 1302. prEN 4138:2014 (E) 10 MODIFICATION REASON AND VALIDATION L4 is not defined and has no tolerance values. 6.a) Approval of manufacturers: see EN 9100; EN 2000 do not exist anymore and replaced by EN 9100