Active , Reaffirmed Standard
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UNE-EN 3304:1997 (R2017)

AEROSPACE SERIES. SCREWS, 100º COUNTERSUNK REDUCED HEAD, OFFSET CRUCIFORM RECESS, CLOSE TOLERANCE NORMAL SHANK, SHORT THREAD, IN TITANIUM ALLOY, ANODIZED, MOS2 LUBRICATED. CLASSIFICATION: 1 100 MPA (AT AMBIENT EMPERATURE)/315 ºC.