Item Type: AN8 Nut Fitting Adapter Material: Metal alloy Color: Blue Thread Size: AN8 Fitment: Replacement for Bulkhead Fittings Package List 5 x AN8 Nut 1Compatibility: The AN8 nut fitting adapter is a replacement for Bulkhead Fittings, precision machined to exact tolerances for trouble free performance. 2Function: The AN8 lock nut fitting adapters will provide an easy way to securely connect your lines together through firewalls, panels, etc. 3Leakage Proof: Precision machined to ensure accurate thread engagement, and provides strong sealing performance at maximum operating pressures. 4Durable Material: The nut fitting adapter is made of metal alloy material, which is strong, corrosion resistant, high hardness, and not easy to wear. 5Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability.