The T&S Brass 000971-45M Lock Nuts are essential components designed for secure faucet installations. Made from durable brass, these lock nuts feature a 3/4-14 NPSM threading, ensuring a reliable fit for various plumbing applications. Each case includes four lock nuts, providing ample supply for multiple projects or repairs. Their robust construction guarantees long-lasting performance, making them a dependable choice for both professional and DIY installations.