Specification for British Association (B.A.) low tensile screws and nuts for aeronautical purposes algolia-search-ignore construction services and construction processes

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Specification for British Association (B.A.) low tensile screws and nuts for aeronautical purposes algolia-search-ignore construction services and construction processes1 Scope These British Standards cover dimensions, material, finish and part numbers for British Association (B. A.) cheese, round, countersunk, and raised countersunk head screws, and dimensions, material, finish and code letters for British Association (B. A.) hexagon ordinary (or full) and thin (or lock) nuts for aeronautical use.