Low Carbon Reducer coupling Nuts

3/8-16X1 Reduced Hex Rod Coupling Nut, 1/4-20, 1/2 Across Flats Zinc (Box Qty 200) BC-371608NCUPR

1/2-13X1 1/4 Reduced Hex Rod Coupling Nut, 3/8-16, 5/8 Across Flats Zinc (Box Qty 150) BC-502010NCUPR

5/8-11X1 1/4 Reduced Hex Rod Coupling Nut, 1/2-13, 13/16 Across Flats Zinc (Box Qty 100) BC-622013NCUPR

3/4-10X1 1/2 Reduced Hex Rod Coupling Nut, 5/8-11, 1 inch Across Flats Zinc (Box Qty 50) BC-752416NCUPR