"Brass Prime" appears to refer to two distinct concepts: a type of brass and a brand name. As a type of brass, it likely refers to high-quality, prime brass used in various applications, potentially including musical instruments or industrial components. As a brand, "Prime-Line" is associated with door security and other hardware products, and they offer items like brass-plated die-cast casement window locks. The term "Brass Prime" could also refer to a specific product or material offered by "Prime Industrial Components LLP", a company specializing in precision brass components.