Coupling Nut Hot Dipped Galvanized - 3/8"-16 (9/16" F x 1-3/4" L) - Qty-25 Go to amazon.com Related posts Top 9 coupling nut 3/8 Expert choice for coupling nut 3/8-16 DescriptionCoupling Nut Hot Dipped Galvanized - 3/8"-16 (9/16" F x 1-3/4" L) - Qty-25