Standard [CURRENT]
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This standard specifies the characteristics of screws with 100° countersunk head, with six lobes recess, short thread, in heat resisting steel FE-PA2601, passivated, for aerospace applications. The standard EN 4634:2009 has been prepared by ASD-STAN, Technical Section Mechanics, with the participation of German experts of the Aerospace Standards Committee. The responsible German standardization committee is Working Committee NA 131-03-01 AA "Verbindungselemente" ("Aerospace fasteners") of the Aerospace Standards Committee at DIN.