1、A.E.C.M.A. STAN DARD NORME A. E .C. M. A. A.E.C.M.A. NORM Comments should be cent within six months after the date of publication decision A.E.C.M.A. 88, Bd. Malesherbes 75008 PARIS - FRANCE prEN 3293 Issue P 1 October 1989 C8 Chairman Mr. WILLIAMS EDITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS
2、DE MATCRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TEL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Bolts, T-head, close tolerance medium thread length in heat resisting nickel base alloy NI-PIOOHT (Inconel 71 8), uncoated Classification : i 275 MPa/650 OC Srie arospa
3、tiale Luft- und Raumfahrt T-Kopf-Papschrauben filetage moyen mittlere Gewindelnge aus hochwarmfester Nickelbasislegierung NI-PI OOHT (Inconel 71 8). blank Klasse : 1275 MPa/650 OC Vis de prcision tte anti-rotation T en alliage rsistant chaud base de nickel NI-PI OOHT (Inconel 71 8), non revtu Classi
4、fication : 1275 MPa/650 OC This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved b y the experts of the co
5、ncerned Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, 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、signature of the AECMA Standard Checking Centre NFS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. ,lied bv B.N.A.E. - 8. rue Moreau-Vauthier - 921 O0 BOULOGNE-BI
7、LLANCOURT Nota - Extra copies can be su Edition approved for publication 5th October 1989 AECMA PREN3273 84.- Lo_123LL R005Z195 I -g prEN 3293 Page 3 1 Scope and field of application This standard specifies the dimensions of uncoated T-head bolts, close tolerance, with MJ- thread, medium thread leng
8、th, in heat-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
9、threads 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 1) EN 2583 Aerospace series - Bolts - In heat resisting nickel base alloy N
10、I-P100HT (Inconei 718); Classification: 1275 MPa/650 OC - TechnicaI specification 2) EN 2952 Aerospace series - Heat resisting nickel base alloy NI-P100HT - Solution treated and cold worked - Bar for hot upset forging for fasteners 3 d D d 30 mm 2) 3 Required characteristics 3.1 Configuration - Dime
11、nsions - Tolerances Configuration shall be in accordance with the figure. Dimensions, tolerances and masses shall conform with the figure and the tables. Details of form, not stated are at the manufacturers opt ion. 3.2 Material Heat resisting nickel base alloy NI-P100HT according to EN 2952. 3.3 Su
12、rface treatment None. 3.4 Thread surface See figure 1) Published as AECMA standard. 2) Published as AECMA pre-standard. AECMA PREN3293 89 = LOL23LL 0005286 3 El prEN 3293 Page 4 t Code Description C D E K Q 4) max. min. f7 max. min. max. min. 0,5 050 MJ5x0,8-4h 6h 5) 6,3 6,l 5 11,6 11,l 3,4 2,9 3,5
13、060 MJ6x1-4h 6h 5) 7,3 7,l 6 12,5 12,O 3,9 3,4 4,2 070 MJ7x1-4h 6h 5) 8,4 8,2 7 13,9 13,4 4,5 4,O 5,2 080 MJ81-4h 6h 5) 9,4 9,2 8 14,5 14,O 5,O 4,5 6,2 100 MJ10125-4h 6h 5) 1192 11,O 10 1790 1695 598 5,3 799 I R 5 X Y max. min. max. min. 0,5 0,3 8,4 8,l 0,7 0,5 9,5 9,2 0,7 0,5 10,5 10,2 0,1: 0,002 -
14、 0,7 0,5 11,5 11,2 0,l 098 096 13,3 1390 0,0015 i Nt0.3 L I ead Thread IS0 3353 - Break sharp edges 0,l to 0.4 Figure - Configuration Table 1 - Dimensions Thread max:acl min :der ma or d i ame ter ,ue shank diamet ined by 6h toler er m ante i nu identity mark p : Typical 1 Dimensions in millimetres
15、1) When the length of the shank is less than one time the nominal value of the shank diameter, D, the run-out is 2) Total strainghtness with reference to nominal length N. 3)For bolts having a shank length less than one time the nominal value of the shank diameter, D, the pitch 4) According to IS0 5
16、855 / 1 and 2. 5) The tolerance on the thread major diameter shall be modified as shown in the figure. measured at a distance equal to half the actual shank length. diameter axis shall be used as datum. AECMA PREN3293 89 1012311 0005287 5 _ prEN 3293 Page 5 Table 2 - Lengths and masses Masses (8,195
17、 kg/dm): kg/1000 parts Dimensions in millimetres diameter code AECMA PREN3273 87 W LOL23LL O005288 7 e, prEN 3293 Page 6 Description block BOLT 4 Designation Iden tit y block EN3293-080050 080 = Nominal diameter code I (see table 1) TT I Number of EN-standard 5 Marking Each T-head bolt, close tolerance, shall be marked in accordance with EN 2424, class A. 6 Technical specification The T-head bolts, close tolerance shall conform to the requirements of EN 2583.
