Quick view Std Hex Nut Brass 3/8 BSF AF = 0.595" Thread diameter 3/8" Thread Pitch 20 tpi Width across the flats 0.592" min 0.600" max Height 0.302" min 0.312" max Material Solid brass Finish Natural Spanner Size 3/8" BS 5/16"... MSRP: Was: Now: $1.05 Add to Cart