BS 3A 171:1962

Действует

Specification for aluminium alloy pan head bolts (Unified threads) for aircraft — 7 стр.

Ссылочные документы

BS L 168:1978

Действует

Specification for bars and extruded sections of aluminium-copper-magnesium-silicon-manganese alloy (solution treated and artificially aged) (not exceeding 200 mm diameter or minor sectional dimension) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8) — 8 стр.

BS 3509:1962

Действует

Specification for spirit level vials — 24 стр.