Historical
BS EN 3278:2012
Aerospace series. Sleeves, tubular, protruding head, in corrosion resisting steel, passivated (0,25 mm wall thickness) (British Standard)
This standard specifies the characteristics and technical requirements for protruding head tubular sleeves, in corrosion resisting steel, which may be plain or provided with a series of annular grooves.hey are for use in aerospace assemblies whose maximum operating temperature does not exceed 650 °C.
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British Standards Institution [bsi]