A4 3/8-16 UNC X 1" SOCKET CAPSCREW ANSI B18.3 is a premium stainless steel fastener, designed for durability and precision applications. Manufactured to high industry standards, it ensures reliability and long-term performance. Made from A2 or A4 stainless steel, it offers excellent corrosion resistance for tough environments. Whether used for construction, marine applications, or general engineering, this fastener provides secure and stable fastening. With precision threading and high-strength design, it delivers outstanding performance in demanding conditions.