Active , Reaffirmed Standard
Most Recent

UNE-EN 3379:1997 (R2017)

AEROSPACE SERIES. BOLTS, DOUBLE HEXAGON HEAD, CLOSE TOLERANCE SHANK, MEDIUM LENGTH THREAD, IN HEAT RESISTING NICKEL BASE ALLOY NI-P101HT (WASPALOY), FOR INCREASED HEIGHT NUTS. CLASSIFICATION: 1 210 MPA (AT AMBIENT TEMPERATURE)/730 ºC.