BS A 31-54:1951+A6:2012

Действует

Specification for British Association (B.A.) low tensile screws and nuts for aeronautical purposes — 16 стр.

Ссылочные документы

Действует

Specification for procurement of alloy steel bolts, metric, with a minimum tensile strength of 1100 MPa — 20 стр.

Действует

Engineers' squares (including cylindrical and block squares). Specification — 34 стр.

Действует

Methods for measurement of gassing of insulation liquids under electrical stress and ionization — 22 стр.

Действует

Specification for British Association (B.A.) low tensile screws and nuts for aeronautical purposes — 22 стр.