Finished Hex Nuts, Grade 5 Zinc Plated Steel, 1/4″, 5/16″, 3/8″ Coarse & Fine
US / Inch – Grade 5 Finished Hex Nuts. These are standard Hex Nuts (also called Finished Hex Nuts) that are made from Medium Carbon Zinc-plated Steel (RoHS compliant Cr+3 zinc). Available sizes: 1/4″-20 1/4″-28 (Fine)5/16″-18 5/16″-24 (Fine)3/8″-16 3/8″-24 (Fine)