ASC Anvil 1-1/4" Galvanized Lock Nut. It is made of durable malleable iron with a galvanized finish for corrosion resistance. This lock nut is designed to secure pipes and fittings in place, ensuring a tight and reliable connection. Anvil International offers a wide range of malleable iron fittings, all manufactured and tested to meet strict quality standards. Conforming to ASME B16.3 and B16.39, these fittings are suitable for water and oil applications.