1、A.E.C.M .A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3327 Issue P 1 October 1989 EDIT PAR LASSOCIATLON EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TEL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Bolts, double hexagon head, clos
2、e tolerance medium thread length in heat resisting nickel base alloy NI-Pi OOHT (lnconel718), uncoated Classification : 1275 MPa/650 OC Srie arospatiale Luft- und Raumfahrt filetage moyen mittlere Gewindeinge Vis de prcision tte bihexagonale en alliage rsistant chaud base de nickel NI-P100HT (Incone
3、l 718), non revtu Classification : 1275 MPa/650 OC Zwlfkant- Papschrauben aus hochwarmfester Nickelbasislegierung NI-PI OOHT (Inconel 71 8), blank Klasse : 1275 MPa/650 OC This .Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs
4、 de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approvedby the experts of the concerned Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed
5、 to an extent that interchangeability is affected, ph yscally or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft
6、European Standard to CEN (European Committee for Standardization) for final vote. Nota - Extra copies can be supplied bv B.N.A.E. - 8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT Edition approved for publication Comments should be sent within six months after the date of publication decision 5t
7、h October 1989 A.E.C.M.A. 88, Ed. Malesherbes 75008 PARIS - FRANCE C8 Chairman Mr. WILLIAMS aecma 1989 c a O * prEN 3327 Page 3 1 Scope and field of application This standard specifies the dimensions of uncoated double hexagon head bolts, close tolerance, with MJ-thread, medium thread length, in hea
8、t resisting nickel base alloy NI-P100HT for aerospace applications. Maximum test temperature of the parts is 650 OC. These bolts are to be used in aerospace fastening systems mainly stressed in shearing force. 2 References IS0 3353 Aerospace construction - Rolled threads - Runout and lead threads IS
9、0 4095 Fasteners for aerospace construction - Bi-hexagonal wrenching configuration IS0 5855/1 Aerospace - MJ threads - Part 1: General requirements IS0 5855/2 Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts EN 2424 Aerospace series - Identification marking of standard fasteners
10、i) EN 2583 Aerospace series - Bolts - In heat resisting nickel base alloy NI-P100HT (Inconel 718) - Classification: 1275 MPa/650 OC - Technical specification 2) EN 2952 Aerospace series - Heat resisting nickel base alloy NI-P100HT - Solution treated and cold worked - Bar for hot upset forging for fa
11、steners 3 d D d 30 mm 2) 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances Configuration shall be in accordance with the figure. Dimensions, tolerances and masses shall conform to the figure and the tables. Details of form, not stated are at the manufacturers option. 3.2 Materia
12、l Heat resisting nickel base alloy NI-P100HT according to EN 2952. 3.3 Surface treatment None. 3.4 Thread surface See figure 1) Published as AECMA standard. 2) Published as AECMA pre-standard. .AE.CMA PREN3327 89 10123l11 000543b 7 prEN 3327 Page 4 I 025m c c 1 Lead- threod IS0 3353 - Break sharp ed
13、ges 0.1 to 0.4 Figure - Configuration Table 1 - Dimensions Dimensions in miiiimetres Coda Descrlptlon DE F G H K Q R CT U V x YZ 4) 17 max. min. min. min h15 ?0,5 max. min. 5) min. max. min. max. min. 050 MJSx0,Whh 6) 5 9,l 8,3 6,8 1,0 5,5 3,s 0,s 0.3 7 2 2,9 2,s 3,7 3,2 OJ3 0,12 - 060 MJ6xl-4h 6h 6
14、) 6 10.6 9,B 7,8 1,2 6 4,2 0.7 0.5 8 2,) 3,2 2,8 4,6 4,l 0,15 070 MJ7x1-4h 6h 6) 7 12.1. 11,) 8,B 1,4 6,5 5,2 0.7 0.5 9 2,6 3,7 3,3 5,4 43 0,18 0,002 - OB0 MJxl-4h 6h 6) 8 13,6 12,8 9.8 1,6 7 6,2 0,7 0,s 10 2,8 4,l 3,7 5,7 5,2 0,15 0,20 100 MJlOx1,25-4h 6h 6) 10 16,7 15,7 11.8 2,0 B 7.9 0,B 0,6 12 3
15、,l 5,l 4,7 7,2 6,7 0,25 120 MJ12x1,25-4h 6h 6) 12 19.9 18,B 13,7 2,4 9,2 9,9 0,9 0,6 14, 3,5 6,O 5,6 8,s B,O 0,18 0,30 - - 0,0015 1) When the length of the shank is less than one time the nominel value of the shank diameter, D, the run- 2) Total straightness with reference to nominal length N. 3) Fo
16、r bolts having a shank length less than one time the nominal value of the shank diameter, D, the pitch diameter axis shall be used as the datum. 4) According to IS0 5855 / 1 and 2. 5) Bihexagonal configuration in conformity with IC0 4095 over length T min. 6) The tolerance on the thread major diamet
17、er shall be modified as indicated in the figure. out is measured at a distance equal to half the actual shank length. ACMA PREN3327 89 W L0123LL 0005438 O S prEN 3327 Page 6 4 Designation Each double hexagon head bolt, close tolerance, shall only be designated as in the following example: Number a D
18、escription block I Identity block BOLT 1 EN 3 3 2 7-7 0 EN-standard 080 = Nominal diameter code (see table i) 050 = Length code 1 (see table 2) Note - If necessary, the design code I9005 may be introduced between the description block and the identity block. 5 Marking Each double hexagon head bolt, close tolerance, shall be marked in accordance with EN 2424, class A. 6 Technical specification . The double hexagon head bolts, close tolerance shall conform to the requirements of EN 2583.
