Left-hand threads are the opposite of right-hand threads.
Their threads run in the anti-clockwise direction and must be turned anticlockwise to fasten them or clockwise to unfasten them.
Thread = 20 TPI (Thread per Inch)
UNC (Unified National Coarse Thread)
Hexagon head Across the Flats ( AF ) = 7/16"
High Tensile Grade 5
Black Finish
Fully Threaded
