UNE-EN 4116:2003

Material aeroespacial. Tuercas bihexagonales, autofrenables, en acero resistente al calor FE-PA92HT (A286), plateadas. Clasificación: 1 100 MPa (a temperatura ambiente)/425 ºC. (Ratificada por AENOR en marzo de 2003)

Aerospace series. Nuts, bihexagonal, self-locking, in heat resisting steel FE-PA92HT (A286), silver plated on thread. Classification: 1100 MPa (at ambient temperature)/425ºC (Endorsed by AENOR in March of 2003.)