Brighton-Best 1/2"-13 NC Grade A Finished Hex Nuts Zinc Plated - 50 per Box (319125)

• Nuts for 1/2" Diameter with 13 NC Thread (National Course) Bolts
• Grade A Low Carbon Steel Hex Nut (Meets ASTM A563 & ASME / ANSI B18.2.2)
• Zinc Plated to meet ASTM F1941 FeZn3A
• 50 per Box

Brighton-Best Hex Nuts - Fasteners are typically made of low-carbon steel. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings. Porteous (PFC) 00200-2800-401.