1、CEN PREN*323b 93 m-3404589 0039988 780 m Edition approved for publication A. E .C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM Comments should be sent within six months C8 Chairman after the date of publication decision prEN 3236 Edition P 2 February 1993 UD.C : EDIT PAR LASSOCIATION EUROPEENNE
2、 DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tel. (1) 47.36.98.76 Supersedes Issue P1 October 1989 Descriptors : ENGLISH VERSION Aerospace series Inserts, thin wall, short, in heat resisting nickel base alloy NI-PI OOHT (
3、Inconel 71 8) Srie arospatiale Douilles filetes, courtes, en alliage de nickel rsistant chaud NI-P100HT (Inconel 718) Luft- und Raumfahrt Gewindeeinstze, dnnwandig, kurz, aus hochwarmfester Nickelbasislegierung NI-P1 OOHT (Inconel 71 8) This “Aerospace Series“ pre-standard has been drawn up under th
4、e 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 by the experts of the concerned Commission following comment by the Member countries. Subsequent to the publicati
5、on 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 signature of the AECMA Standard Checking Centre INPSI and formal agreement of the Officia
6、i Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. 1993-02-26 A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr. WILLIAMS 0 aecma 1993 CEN PRENs3236 93
7、 m 3404589 0039989 617 m prEN 3236 Page 3 1 Scope This standard specifies the dimensions of short thin wall inserts with internal thread self-locking and internal threads silver plated, in NI-PI OOHT, for aerospace applications maximum test temperature of the part is 550 OC. 2 Normative references I
8、S0 965-1 IS0 5855-2 EN 2404 EN 2424 EN 2786 EN 3297 EN 3298 TR 3198 IS0 general purpose metric screw threads - Tolerances - Part 1 : Principles and basic data Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts Heat resisting nickel base alloy NI-PI OOHT - Solution treated and prec
9、ipitation treated - Bars - Aerospace series 1, Aerospace series - Identification marking of standard fasteners Aerospace series - Electrolytic silver plating of fasteners 2, Aerospace series - Inserts, thin wall, self-locking in heat resisting nickel base alloy NI-P100HT (Inconel 718) - Classificati
10、on 1 275 MPa / 550 OC - Technical specification 2) Aerospace series - Insert, thin wall - Installation and removal procedure 2, Aerospace series - Manufacturers identification monograms for EN aerospace product 3, 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are
11、 in millimetres. De are at the manufacturers option. 3.2 Material EN 2404 Configuration - Dimensions - Tolerances - Masses ails of form not stated 3.3 Surface treatment Only the inside diameters A and C shall be silver plated to EN 2786 : - Inside threads 2 MJ6 : 6 pm min. shall be measured at the p
12、itch diameter ; - Inside threads MJ5 : shall show complete coverage, without thickness requirements. 1) Published as AECMA standard at the date of publication of this standard 2) Published as AECMA pre-standard at the date of publication of this standard 3) Published as AECMA technical report at the
13、 date of publication of this standard Previous page is blank CEN PRENx323b 93 3404589 O039990 339 = prEN 3236 Page 4 3 Slots equi spaced r Thread lock a rapprox mid length I I 1 r 1. h I l . Ai c -Face X Thread - pitch diameter r Knurl across thread to produce J serrations Grooves for identification
14、 to be f V-section 0,l to 0,2 deep, spaced 1,0 apart positioned on Face X (see TR 3198). Figure 1 Table 1 Thread internal - hreads conform to IS0 5855-2. On self-locking zone the tolerances apply before deformation. 2) Threads conform to IS0 965-1 except maximum minor diameter shall be as stated in
15、table 1. Table 1 (concluded) a a a CEN PREN*323b 93 D 3404589 0039993 275 W Description block prEN 3236 Page 5 Identity block NOTE : If necessary, the originator code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style G 6 Installation EN 3298 7 Technical specification EN 3297
