PurposeTo fit air drive gun and engage any coupling along trailing edge flap systemSpecificationANSI B92.1Overall Length1.55Wrench End TypeExternal Involute SplineWrench Body TypeStraightWrench VariationStandardDrive TypeInternal SquareDrive Size1/2Head Thickness0.48Used WithTorque WrenchWhere UsedTailing Edge Flap SystemFastener Number256A3745Number of Teeth27Spline Pitch16/32Pressure Angle30