BS 2A 175:1962+A3:2018 specifies the materials, dimensions and inspection requirements for machinedand anodized aluminium alloy bolts with 100° countersunk D-slot recess drive heads and Unifiedthreads for aircraft.Cross References:SAE AMS03-25BS 4A 100BS L 168NAS 9800BS 350BS 1981Incorporates the following:Amendment, November 2018
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