Back Home / Fasteners / Nuts / CASTLE NUT ZINC 1/2″-20 CASTLE NUT ZINC 1/2″-20 SKU: XCN1220 Categories: Fasteners, Nuts Slotted Steel Castle Nut Grade 2, Zinc plated finish 1/2″ – 20 Fine thread size ASTM 563 quality standards Case Quantity: 50 Log In For Pricing