1、 - CEN PREN*3304 92 = 3404589 0024824-5 Edition approved for publication Comments should be sent within six months after the date of publication decision A.E.C.M.A. Technopolis - 175, rue Jean-Jacques Rousseau 92138 Issy-les-Moulineaux Cdex - FRANCE 1992-03-1 3 A. E. C. M .A. STAN DAR D NORME A.E.C.
2、M.A. A.E.C.M.A. NORM C3 Chairman Mr. ARENA prEN 3304 Issue P 1 March 1992 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cdex -Tl. (1) 47.36.98.76 UDC : Key words : ENGLISH VERSION Aerospace series Bol
3、ts, I OOo countersunk reduced head, offset cruciform recess, close tolerance shank, short thread, in titanium alloy, Mo d min.: see IS0 5855-2. 3) Increments : - 1 for L1 5 30 - 2 for 30 100 If greater lengths are required, they shall be chosen using these steps. The length code corresponds to the l
4、ength L1, completed by one or two zero(s) to the left, where necessary, to obtain a 3 digit code. 4) Approximate values (kgll O00 pieces), calculated on the basis of 4,45 kg/dm3, Qiven for information purpose only They apply to bolts without hole. CEN PRENu3304 92 3404589 0024829 4 m. prEN 3304 Page
5、 7 4 Designation Example: Identity block i i Description block BOLT EN3304DOLOC -7 Number of this standard 7, I Locking code (see table 2) 1 Diameter code (see table 1) I Length code (see table 1) Table 2 Option Locking code Split pin hole D No hole - . Note: If necessary, the originator code 19005 shall be placed- between the description block and the identity block. 5 Marking See table 3 and figure 1. Table 3 Diameter code Style to EN2424 040 N 050 to 120 B 140 to 200 A 6 Technical specification IS0 91 52 except for : - approval of manufacturers: EN2000 - qualification of bolts: EN3042
