1、STD-AECMA PREN 3237-ENGL 1993 1012311 0012755 971 = A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3237 Edition P 1 February 1993 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - T
2、l. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Inserts, thin wall, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718) Srie arospatiale Douilles filetes, longues, en alliage de nickel rsistant a chaud NI-Pl OOHT (Inconel 71 8) Luft- und Raumfahrt Gewindeeinstze
3、 dnnwandig, lang, aus hochwarmfester Nickelbasislegierung NI-PI OOHT (Inconel 71 8) 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.
4、 It has been technically approved by 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 to an extent that interchangeability is affected, physically or functionally, without
5、 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 European Standard to CEN (European Committee for Standardizationl for final vote. Nota
6、 - Extra copies can be supplied by 6.NA.E. - Technopolis 54 - 199, rue JeanJacques Rousseau - 921 38 ISSY-LES-MWUNEAUX CEDEX Comments should be sent within six months after the date of Dublication decision I Edition approved for publication 1993-02-26 A.E.C.M.A. Technopolis - 175, rue Jean-Jacques R
7、ousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr. WILLIAMS 0 aecma 1993 STD-AECMA PREN 3237-ENGL 1773 101231L 001275b 328 prEN 3237 Page 3 1 Scope This standard specifies the dimensions of long thin wall inserts with internal thread self-locking and internal threads silver plated, in heat NI-P1
8、OOHT, for aerospace applications maximum test temperature of the part is 550 OC. 2 Normative references IS0 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 : Li
9、mit dimensions for bolts and nuts Heat resisting nickel base alloy NI-P1 OOHT - Solution treated and precipitation treated - Bars - Aerospace series Aerospace series - Identification marking of standard fasteners Aerospace series - Electrolytic silver plating of fasteners 2, Aerospace series - Inser
10、ts, thin wall, Self-locking in heat resisting nickel base alloy NI-PlOOHT (Inconel 718) - Classification 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 aeros
11、pace product 3, 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances - Masses See figure 1 and table 1. Dimensions and tolerances are in millimetres. Details of form not stated are at the manufacturers option. 3.2 Material EN 2404 3.3 Surface treatment Only the inside diameters A a
12、nd C shall be silver plated to EN 2786 : - Inside threads 2 MJ6 : 6 pm min. shall be measured at the pitch 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
13、pre-standard at the date of publication of this standard 3) Published as AECMA technical report at the date of publication of this standard Previous page is blank STD-AECMA PREN 3237-ENGL 3773 m 3032333 0032757 2bli H Diameter A B C code Thread internal Thread external 2, max. minor thread diameter
14、max. min. u/ prEN 3237 Page 4 D max. min. A- 050 MJ50,8-4H6H 060 MJ6x1-4H5H 070 MJ7xl-4H5H 3 Slots equi spaced r M7x 1-49 5,973 5,35 52 13,45 12,85 M81-49 7,016 6,35 62 15,65 15,05 M9x1-4g 8,056 7,35 72 18,05 17,45 d Thread lock approx mid length E - F - Figure 1 Table 1 I I / I -Face X i 1 - Thread
15、 pitch diameter I -6 LKnurl across thread to produce J serrations Grooves for identification to be of V-section 0,l to 0,2 deep, spaced 1,0 apart positioned on Face X (see TR 3198). 080 I MJ8x1-4H5H IM101-4g I 9,056 I 8,35 I 82 I 20,45 I 19 100 I MJlOx1,25-4H5H I M12x1-4g I 11,ll I 10,4 I 10,25 I 25
16、15 I 24,55 1) Threads conform to IS0 5855-1 and 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 table 1. Table 1 (concluded1 lT Diameter STD-AECMA PREN 3237-ENGL 1993 10L2311 0032758 LTO D
17、prEN 3237 Page 5 4 Designation EXAMPLE : Description block Identity block INSERT EN3j37-050 Number of this standard Thread code (see table 1) 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
