BS A 301:1989

Заменен

Procurement of corrosion and heat-resisting steel bolts with strength classification 1100 MPa and MJ threads — 24 стр.

Ссылочные документы

Действует

Aerospace. Bolts, with MJ threads, made of heat and corrosion resisting steel, strength class 1100 MPa. Procurement specification — 30 стр.